Page 1 Stratos Multi E401N User Manual Industrial Transmitter µS 7.00 0.154 25.3 25.3 °C °C Favorites Menu Menu Read before installation. www.knick-international.com Keep for future use.
Page 2: Supplemental Directives
Stratos Multi E401N Supplemental Directives READ AND SAVE THIS DOCUMENT FOR FUTURE REFERENCE. BEFORE ATTEMPTING TO ASSEMBLE, INSTALL, OPERATE OR MAINTAIN THE PRODUCT, PLEASE ENSURE A COMPLETE UNDERSTANDING OF THE INSTRUC- TIONS AND RISKS DESCRIBED HEREIN. ALWAYS OBSERVE ALL SAFETY INFORMATION. FAILURE TO COMPLY WITH INSTRUCTIONS IN THIS DOCUMENT COULD RESULT IN SERIOUS INJURY AND/OR PROPERTY DAMAGE.
Page 3: Table Of Contents
Stratos Multi E401N Table of Contents 1 Safety............................. 1.1 Intended Use ................................. 1.2 Personnel Requirements ........................... 1.3 Safety Training ..............................1.4 Residual Risks ................................ 1.5 Installation and Commissioning........................10 1.6 Operation................................10 2 Product ............................11 2.1 Package Contents and Product Identification................... 11 2.1.1 Nameplate ..............................
Page 4 Stratos Multi E401N 6 Parameter Setting ........................41 6.1 Operating Levels ..............................41 6.2 Locking a Function .............................. 42 6.3 Parameter Setting Menus ..........................43 6.4 System Control..............................43 6.4.1 Memory Card ............................44 6.4.2 Transfer Configuration.......................... 44 6.4.3 Parameter Sets............................45 6.4.4 Function Control.............................
Page 5 Stratos Multi E401N 6.11 Conductivity (Inductive) Process Variable ....................89 6.11.1 Sensor Data .............................. 91 6.11.2 Calibration Presettings ......................... 93 6.11.3 Temperature Compensation of Process Medium ............... 93 6.11.4 Concentration (TAN Option FW-E009).................... 94 6.11.5 TDS Function............................94 6.11.6 USP Function............................94 6.11.7 Messages ..............................
Page 6 Stratos Multi E401N 7.5.5 Calibration Mode: Manual........................126 7.5.6 Calibration Mode: Product........................127 7.5.7 Calibration Mode: Zero Point ......................128 7.5.8 Calibration Mode: Installation Factor....................129 7.5.9 Calibration Mode: Data Entry......................129 7.5.10 Calibration Mode: Temperature ......................130 7.6 Calibration/Adjustment Oxygen Process Variable ................... 131 7.6.1 Explanations Regarding Oxygen Calibration/Adjustment............
Page 7 Stratos Multi E401N 13 Accessories ............................176 13.1 Memory Card................................. 176 14 TAN Options ..........................179 14.1 pH Buffer Table: Entry of Individual Buffer Set (FW-E002) ..............180 14.2 Current Characteristic (FW-E006) ........................181 14.3 Concentration Determination (FW-E009)....................181 14.3.1 Concentration Curves ........................... 183 14.4 Pfaudler Sensors (FW-E017) ..........................
Page 8 Stratos Multi E401N 16 Appendix............................225 16.1 Channel II Wiring Examples..........................225 16.1.1 pH Analog Wiring Examples....................... 225 16.1.2 ORP Analog Wiring Example ......................231 16.1.3 ISM pH Wiring Example........................232 16.1.4 Contacting Conductivity Wiring Examples ................... 233 16.1.5 Inductive Conductivity Wiring Examples ..................240 16.1.6 Dual Conductivity Wiring Examples ....................
Page 9: Safety
1.1 Intended Use Stratos Multi E401N is an industrial transmitter in 4-wire technology. In the field of liquid analysis, it can measure pH values, ORP, conductivity (contacting or inductive), and oxygen content, both dis- solved and in the gaseous phase.
Page 10: Installation And Commissioning
Stratos Multi E401N 1.5 Installation and Commissioning Adhere to all applicable national and local regulations and standards for the installation of electrical equipment. Information on installation is provided in the installation guide Stratos Multi. Comply with the points below during installation and commissioning: •...
Page 11: Product
Stratos Multi E401N 2 Product 2.1 Package Contents and Product Identification • Stratos Multi basic unit (front unit and rear unit) • Bag containing small accessory parts (2x plastic sealing plugs, 1x hinge pin, 1x plate for conduits, 2x insertable jumpers, 1x reduction sealing insert, 1x multiple sealing insert, 2x blanking plugs, 5x cable glands, and M20x1.5 hexagon nuts)
Page 12: Nameplate
Stratos Multi E401N 2.1.1 Nameplate 1 Manufacturer 7 Power supply 2 Product name 8 Manufacturer address with designation of origin 3 CE mark 9 Barcode: Product number, serial number, check digit 4 Special conditions and danger points 10 Degree of protection, permissible ambient temperature...
Page 13: Design And Function
Stratos Multi E401N 2.3 Design and Function Basic Variant 1 measuring channel for a Memosens sensor or digital, optical oxygen sensor 2 current outputs Door contact 3 freely assignable relay contacts for NAMUR messages (Failure, Maintenance Required, Out of Specification, Function Check), set-point alarm relay,...
Page 14: Product Line
Stratos Multi E401N 2.4 Product Line Device (Digital Basic Unit) Order No. Stratos E401N E401N Measuring Modules for Analog or ISM Sensors or 2nd Channel Memosens, Non‑Ex Order No. pH value, ORP measurement MK-PH015N Oxygen measurement MK-OXY046N Contacting conductivity measurement (wetted)
Page 15: System Overview
Stratos Multi E401N 2.5 System Overview 1 Input for Memosens sensors or SE740 optical 6 Current output 1: 0/4 … 20 mA/HART active or oxygen sensor passive (TAN option FW-E050 HART: 4 … 20 mA) 2 Power output 3/15/24 V for SE740 optical oxygen...
Page 16: Example Applications
Stratos Multi E401N 2.5.1 Example Applications Memosens pH Measurement and PID Control MS pH Analog pH Alarm Acid Brine PID control Alarm 24 V AC Acid Brine...
Page 17 Stratos Multi E401N Memosens Oxygen Measurement and Pressure Correction with External Pressure Transmitter (with TAN Option FW-E051 “Current Input”) e.g., + 24 V Pressure Transmitter...
Page 18: Installation
Stratos Multi E401N 3 Installation 3.1 Enclosure Mounting Options Knockouts in the rear unit enable different mounting options: • Wall mounting Dimension Drawings, p. 20 ➜ • Pipe mounting Pipe-Mount Kit ZU0274, p. 22 ➜ • Panel mounting Panel-Mount Kit ZU0738, p. 24 ➜...
Page 19 Stratos Multi E401N Install the cable glands from the bag containing small accessory parts in the rear unit. Package Contents and Product Identification, p. 11 ➜ Blanking Plugs, Reduction Sealing Inserts, Multiple Sealing Inserts, p. 25 ➜ Guide the required cables through.
Page 20: Dimension Drawings
Stratos Multi E401N 3.3 Dimension Drawings 3.3.1 Wall Mounting Note: All dimensions are listed in millimeters [inches]. 80 [3.15] 148 [5.83] 34 [1.34] 29 [1.14] 90 [3.54] 121,4 [4.78] 8,5 [0.33] 131 [5.16] 115,5 [4.55] 39,5 [1.56] 42 [1.65] 42 [1.65]...
Page 21: Mounting Clearance
Stratos Multi E401N Mounting Clearance [4.33] [4.33] There is a 100 mm hinge pin in the bag containing small accessory parts included in the package con- tents Package Contents and Product Identification, p. 11. The hinge pin connects the front and rear ➜...
Page 22: Pipe-Mount Kit Zu0274
Stratos Multi E401N 3.3.2 Pipe-Mount Kit ZU0274 Note: All dimensions are listed in millimeters [inches]. Pipe dimensions: Diameter 40 … 60 mm [1.57 … 2.36″] or edge length 30 … 45 mm [1.18 … 1.77″] 40 [1.57] ... 60 [2.36]   1 For either vertical or horizontal posts or pipes 3 Hose clamp with worm gear drive according to DIN 3017, 2x...
Page 23: Protective Hood For Wall And Pipe Mounting Zu0737/Zu1176
Stratos Multi E401N 3.3.3 Protective Hood for Wall and Pipe Mounting ZU0737/ZU1176 ZU0737: Stainless steel A2 ZU1176: Stainless steel 1.4401 Note: Use only for wall or pipe mounting Note: All dimensions are listed in millimeters [inches]. Wall Mounting 147 [5.78]...
Page 24: Panel-Mount Kit Zu0738
Stratos Multi E401N 3.3.4 Panel-Mount Kit ZU0738 Note: All dimensions are listed in millimeters [inches]. Cutout 138 mm x 138 mm (DIN 61554) < 30 [1.181] 76 [2.992] 1 [0.039] ... 22 [0.866] 41 [1.614] 1 Control panel 4 Locking bar, 4x 2 Circumferential seal, 1x 5 Threaded sleeve, 4x 3 Screw 60.0 x 4.0 mm, 4x...
Page 25: Blanking Plugs, Reduction Sealing Inserts, Multiple Sealing Inserts
Stratos Multi E401N 3.4 Blanking Plugs, Reduction Sealing Inserts, Multiple Sealing Inserts As delivered, each cable gland includes a standard sealing insert. Reduction sealing inserts and multi- ple sealing inserts are available for the tight insertion of one or two thinner cables. The clasp can be tightly sealed using a blanking plug.
Page 26: Connections
Stratos Multi E401N 3.5 Connections Rear of front unit 1 Terminals for inputs, outputs, relay contacts, power 5 Terminal plate supply 2 Slot for memory card (ZU1080‑S‑*‑*) 6 Module plate sticker, example for pH module 3 RS-485 interface: Connection for Memosens/...
Page 27: Terminal Assignment
Stratos Multi E401N 3.6 Terminal Assignment The terminals are suitable for single wires or stranded wires up to 2.5 mm Terminal Connection Sensor (Memosens or 3 V other digital sensor) RS485 A RS485 B Shield Power out Power output for supplying power to special sensors or external...
Page 28: Electrical Installation
Stratos Multi E401N 3.7 Electrical Installation WARNING! The device does not have a power switch. An appropriately arranged and accessible disconnecting device for the transmitter must be present in the system installation. The disconnecting device must disconnect all non-grounded, current-carrying wires and be labeled such that the associ- ated transmitter can be identified.
Page 29: Installing Active And Passive Current Outputs
Stratos Multi E401N 3.7.1 Installing Active and Passive Current Outputs The current outputs directly supply current (0/4 … 20 mA) to a load according to the selected process variable. Passive current outputs require an external supply voltage. Note: Observe the specifications and connected loads.
Page 30 Stratos Multi E401N Typical AC Application with Inductive Load 1 Load 3 Contact 2 Typical RC combination, e.g., capacitor 0.1 μF, resistance 100 Ω/1 W Typical DC Application with Inductive Load 1 Inductive load 3 Contact 2 Free-wheeling diode, e.g.,1N4007 (note polarity) Typical AC/DC Application with Capacitive Load...
Page 31: Sensor Connection
Stratos Multi E401N 3.8 Sensor Connection 3.8.1 Connecting a Memosens Sensor/Optical Oxygen Sensor (LDO) Top view of terminals for Memosens/LDO sensor. The figure shows the opened device, rear side of the front unit. 1 RS-485 interface: Standard sensor connection for digital sensors (Memosens sensor/LDO SE740 sensor)
Page 32: Connecting An Analog Sensor/Second Memosens Channel
Stratos Multi E401N 3.8.2 Connecting an Analog Sensor/Second Memosens Channel CAUTION! Electrostatic discharge (ESD). The modules’ signal inputs are sensitive to electrostatic discharge. Take measures to protect against ESD before inserting the module and connecting the in- puts. Measuring Modules for Connecting Analog Sensors: pH, ORP, Oxygen, Conductivity Switch off the power supply of the device.
Page 33: Terminal Assignments Of Measuring Modules
Stratos Multi E401N Measuring Module for Connecting a Second Memosens Sensor If you want to measure two process variables using Memosens sensors, you must insert an MK‑MS095N Memosens module for the second channel. Insert a Memosens module into the module slot and connect it (see above).
Page 34 Stratos Multi E401N Module for Contacting Conductivity Measurement Order No. MK-COND025N Module for Inductive Conductivity Measurement Order No. MK-CONDI035N Module for Dual Conductivity Measurement Order No. MK-CC065N Memosens Module Order No. MK-MS095N...
Page 35: Commissioning
Stratos Multi E401N 4 Commissioning Note: Upon request, Knick will provide safety briefings and product training during initial commis- sioning of the product. More information is available from the relevant local contacts. Install the enclosure. Installation, p. 18 ➜ Wire the connections.
Page 36: Operation And Use
Stratos Multi E401N 5 Operation and Use 5.1 Changing the User Interface Language Requirements • Stratos Multi is connected to the power supply. • Measuring mode is shown on the display. Steps Left softkey: Menu. The Menu Selection opens. Press right softkey: Lingua. Press the right arrow key and set the language of the user interface.
Page 37 Stratos Multi E401N Sensor Monitoring Details (Administrator) Slope Zero Point ORP Offset Sensocheck Ref El Sensocheck Glass El Settling Time Back Back to Meas. 1 HOLD function check 7 Softkey function display 2 Headline of current menu 8 Softkey function display...
Page 38 Stratos Multi E401N Keypad 1 Left softkey: 4 Enter: Function in accordance with the left function Open menu, confirm entries. display 2 Left/right arrow keys: 5 Right softkey: Menu selection: previous/next menu, digit Function in accordance with the right function...
Page 39: Menu Structure Overview
Stratos Multi E401N 5.3 Menu Structure Overview Menu Calibration Maintenance Parameter Setting Diagnostics Measure Passcode: 1147 2958 1246 Operator Level (factory 1989 Administrator Level setting) Submenus: Calibration mode, Maintenance of calibration points, sensors and buffer set current outputs System control (time, firmware update, options,...
Page 40: Measurement Display
Stratos Multi E401N CAUTION! In function check mode (HOLD), the current outputs may be frozen at the last mea- sured value or set to a fixed value. Measurement operations must not be carried out while the device is in function check mode (HOLD), as the system may behave unexpectedly and put users at risk.
Page 41: Parameter Setting
Stratos Multi E401N 6 Parameter Setting CAUTION! Faulty parameter settings or adjustments can result in faulty outputs. A system spe- cialist must therefore commission Stratos Multi, set all its parameters, make all necessary adjustments, and protect it from unauthorized modifications.
Page 42: Administrator Level
Stratos Multi E401N Administrator Level • Access to all settings, including passcode settings. Passcode Entry, p. 49 ➜ • Releasing or locking functions for access from the operator level. Functions that can be locked for the operator level are marked with the “lock” icon.
Page 43: Parameter Setting Menus
Stratos Multi E401N 6.3 Parameter Setting Menus Menu Description System Control, p. 43 ➜ System Control Parameter Setting, General, p. 49 ➜ General Inputs/Outputs, p. 56 ➜ Inputs/Outputs Sensor Selection [I] [II], p. 66 ➜ Sensor Selection [I] [II] [I] [Sensor] Channel I parameter settings: Menu depends on sensor selection.
Page 44: Memory Card
Stratos Multi E401N 6.4.1 Memory Card This menu is displayed when the ZU1080‑S‑*‑D Data Card is inserted. With activated TAN option FW‑E104 Logbook: Switch recording of logbook entries on the Data Card on/off. Logbook (FW-E104), p. 198 ➜ With activated TAN option FW‑E103 Measurement recorder: Enable/disable recording of measurement recorder on the Data Card.
Page 45: Parameter Sets
Stratos Multi E401N 6.4.3 Parameter Sets Stratos Multi provides two complete selectable parameter sets (A/B) for different measurement tasks. The currently activated set can be signaled by a relay contact. Relay Contacts, p. 59 ➜ Parameter set “B“ only permits setting of process-related parameters.
Page 46: Function Control
Stratos Multi E401N 6.4.4 Function Control The following functions can be activated by softkey or optocoupler input OK1: Input OK1: • Parameter set selection Parameter Sets, p. 45 ➜ • Flow Flow, p. 105 ➜ • Function check • Function check (channel) Right softkey: •...
Page 47: Calculation Blocks (Tan Option Fw-E020)
Stratos Multi E401N Deleting a favorite: Open the menu and select the submenu set as a favorite. Diagnostics Message List Logbook Device Information HART Information Measurement Recorder Device Test Back Delete Favorite Right softkey: Delete Favorite ✓ The heart icon disappears from in front of the menu line. The softkey function changes to Set Favorite.
Page 48: Option Activation
Stratos Multi E401N 6.4.9 Option Activation Add-on functions (TAN options) expand the functionality of the device system. TAN options are device-related. Therefore, you must specify the serial number of the device in addition to the relevant order no. for this function when ordering a TAN option. The manufacturer then supplies a TAN (trans- action number) for activating the add-on function.
Page 49: Concentration Table (Tan Option Fw-E009)
Note: If you lose the passcode for the administrator level, system access is locked! The manufacturer can generate a rescue TAN. If you have any questions, please contact Knick Elektronische Messgeräte GmbH & Co. KG using the information provided on the last page of this document.
Page 50: Configuring The Measurement Display
Stratos Multi E401N 6.5.1 Configuring the Measurement Display   Parameter Setting General Measurement Display Set the number of values to be displayed: 2 values (1 channel), 2 values (2 channels), 4 values (2 channels), 2 values, 4 values, 6 values, 8 values As required, assign channels and variables to be displayed.
Page 51 Stratos Multi E401N Measurement Display, Example with 2 Values (1 Channel) Selection Result Select two variables in one measuring channel: Number 2 Values 2 Values (1 Channel) Channel 1 pH Value 2 Values (2 Channels) 4 Values (2 Channels) 1st Measured Value...
Page 52 Stratos Multi E401N Measurement Display, Example with 2 Values (2 Channels) Selection Result Select two variables in two measuring channels: 2 Values (1 Channel) Number 2 Values 2 Values (2 Channels) Channel 1 pH Value 4 Values (2 Channels) 1st Measured Value...
Page 53 Stratos Multi E401N Measurement Display, Example with 4 (6, 8) Values Selection Result Select any four (six, eight) variables: Number 4 Values 4 Values (2 Channels) 1st Value pH Value 2 Values 4 Values 2nd Value Temperature 6 Values 3rd Value...
Page 54 Stratos Multi E401N Measurement Display, Example with 4 Values (2 Channels) Selection Result Select four variables in two measuring channels: Number 2 Values 2 Values (1 Channel) Channel 1 pH Value 2 Values (2 Channels) 4 Values (2 Channels) 1st Measured Value...
Page 55: Display
Stratos Multi E401N Selection Result Channel 1 Memosens pH/ORP pH Value pH Value 1st Measured Value Conductivity pH Value Temperature pH Voltage 2nd Measured Value pH Voltage Salinity Channel 2 Analog Cond Resistivity Conductivity 1st Measured Value Conductivity Conductance 4.00 1.135 mS/cm...
Page 56: Inputs/Outputs
Stratos Multi E401N 6.6 Inputs/Outputs The following inputs and outputs are available: • Four 0/4 … 20 mA current outputs for transferring variables such as measured value or temperature (factory setting); two of these outputs can be enabled via TAN; configurable active or passive cur- rent outputs Current Outputs, p.
Page 57 Stratos Multi E401N Setting the Measuring Span: Start (0/4 mA) and End (20 mA) Example measuring span pH 0 … 14 Example measuring span pH 5 … 7 Advantage: Higher resolution in range of interest [mA] [mA] 14 [pH] [pH] Characteristic Curves Linear Characteristic The process variable is represented by a linear output current curve.
Page 58: Output Filter
Stratos Multi E401N Function/Logarithmic Characteristic Non-linear curve of the output current, enables measurement across multiple decades, e.g., the mea- surement of very small measured values with high resolution and measurement of large measured values (low resolution). Requires entry of value for 50% output current.
Page 59: Relay Contacts
Stratos Multi E401N 6.6.2 Relay Contacts Up to three free relay contacts K1 … K3 can be defined by the user. Contacts K2 and K3 are connected if the controller is used. PID Controller, p. 64 ➜ With TAN option FW‑E111 and activated Uniclean usage, only the relay contacts that are not used for the Uniclean controller are displayed.
Page 60 Stratos Multi E401N Usage: Failure  Inputs/Outputs Relay Contacts Select the desired contact with up/down arrow keys and enter. Specify : “Failure” Usage Set the contact parameters. Failure is active: • If a set value has exceeded or fallen below “Failure Limit Hi” or “Failure Limit Lo” respectively •...
Page 61 Stratos Multi E401N Usage: Function Check  Inputs/Outputs Relay Contacts Select the desired contact with up/down arrow keys and enter. Specify : Function check Usage Set the contact parameters. Function Check (HOLD) is active: • For calibration (only the relevant channel) •...
Page 62 Stratos Multi E401N Measured value falls below limit Measured value exceeds limit Effective Direction: Effective Direction: Minimum Maximum Signal Signal Hysteresis + Limit value Limit value Hysteresis - Contact Contact Usage: Rinse Contact Relay contacts can be used to signal a rinse process.
Page 63 Stratos Multi E401N Example 1: Parameter Setting Contact K1: “Limit Value” (for sensor channel 1) Usage Parameter Setting Contact K2: “Rinse Contact” Usage Contact K1 is switched due to an off-limit condition. Contact K2 is switched by a rinse function.
Page 64: Pid Controller
Stratos Multi E401N 6.6.3 PID Controller The PID controller can be configured as a pulse length or pulse frequency controller. Menu item Description Pulse length controller or pulse frequency controller, see below. Controller Type Depends on the connected sensors. Controlled Variable Input of setpoint and neutral zone as a percent of the respective controller variable.
Page 65: Control Inputs
Stratos Multi E401N Pulse Frequency Controller The pulse frequency controller is used to actuate a frequency-controlled actuator (metering pump). It varies the frequency with which the contacts are switched on. Parameters can be set for the maximum pulse frequency [Imp/min]. It depends on the actuator. The ON time is constant. It is automatically cal- culated from the configured maximum pulse frequency.
Page 66: Sensor Selection [I] [Ii]
Stratos Multi E401N 6.7 Sensor Selection [I] [II] Note: Function check (HOLD) is active. Stratos Multi is factory-set to the pH value measurement method with Memosens sensor. This mea- surement method also provides redox potential measurement. The measurement method can be...
Page 67: Ph Process Variable
Stratos Multi E401N 6.8 pH Process Variable Note: Function check (HOLD) is active. Note: After changing the process variable or measuring mode, Stratos Multi retains its settings but needs to be reconfigured. Selecting a Memosens pH Sensor   Parameter Setting...
Page 68 Stratos Multi E401N Selecting a Digital ISM pH Sensor (TAN Option FW-E053)   Parameter Setting Sensor Selection [I] [II] Sensor Selection [II] Selection of an ISM pH sensor connected to the MK-PH015N measuring module: Module: MK-PH Mode: Adjustable parameters for ISM pH sensors ...
Page 69 Stratos Multi E401N Submenu Description With pH/ORP sensor: ORP / rH Value Selection of the reference electrode: Ag/AgCl, KCl 1 mol, Ag/AgCl, KCl 3 mol, Hg,Tl/TlCl, KCl 3.5 mol, Hg/Hg , K sat. Enable/disable ORP conversion to standard hydrogen electrode SHE. Calculate rH with or without factor.
Page 70: Sensor Data
Stratos Multi E401N 6.8.1 Sensor Data Memosens Sensors Memosens sensors provide relevant sensor data automatically. Analog Sensors The sensor type must be selected if using analog sensors:   Parameter Setting [II] Analog … Sensor Data Sensor Data Sensor Type...
Page 71 Stratos Multi E401N Adjusting Sensor Monitoring  Sensor Data Sensor Monitoring Details Open a sensor parameter, e.g., Slope of the slope to automatic or individual. Monitoring If you select “Individual”: The nominal slope and the min./max. limit values can be entered.
Page 72 Stratos Multi E401N Setting CIP/SIP Counters  Sensor Monitoring Details CIP Counter SIP Counter : “Off” or “Individual” Monitoring If you select “Individual”: Enter the maximum number of CIP/SIP cycles. In the menu item, select whether and how off-limit values should be displayed: Message No message.
Page 73: Calibration Presettings
Stratos Multi E401N 6.8.2 Calibration Presettings The calibration presettings can be defined in the parameter settings or adjusted directly in the Calibra- tion menu prior to the calibration. : Presetting of calibration mode, e.g., Calimatic, Manual, Product Calibration, Data En-...
Page 74: Temperature Compensation Of Process Medium
Stratos Multi E401N 6.8.3 Temperature Compensation of Process Medium Note: If temperature compensation of the process medium is enabled, “TC” is shown on the display in measuring mode. The following selection is available for temperature compensation: • Linear with input of a temperature coefficient TC •...
Page 75: Displaying Messages
Stratos Multi E401N 6.8.5 Messages All values determined by the measuring module or sensor can generate messages. Messages can be configured for the following process variables: • pH Value • ORP (with pH/ORP sensor) • rH value (with pH/ORP sensor) •...
Page 76: Orp Process Variable
Stratos Multi E401N 6.9 ORP Process Variable Note: Function check (HOLD) is active. Note: After changing the process variable or measuring mode, Stratos Multi retains its settings but needs to be reconfigured. Parameter setting for a Memosens pH/ORP sensor (combo sensor) pH Process Variable , p.
Page 77: Sensor Data
Stratos Multi E401N Selecting an Analog ORP Sensor   Parameter Setting Sensor Selection [I] [II] Sensor Selection [II] Selection of an ORP sensor connected to the MK-PH015N measuring module: Module: MK-PH Mode: Analog When using an analog ORP sensor, the menus are the same as for an analog pH sensor: ...
Page 78: Calibration Presettings
Stratos Multi E401N With left softkey: Back, apply the sensor monitoring settings and set additional parameters. With the right softkey: Back to Meas., confirm the sensor monitoring settings and end the function check (HOLD). 6.9.2 Calibration Presettings The calibration presettings can be defined in the parameter settings or adjusted directly in the Calibration menu prior to the calibration.
Page 79: Messages
Stratos Multi E401N 6.9.4 Messages All values determined by the measuring module or sensor can generate messages. Messages can be configured for the following process variables: • ORP voltage • Temperature Setting Parameters for Messages Individual process variable limits for the monitoring range can be selected in the...
Page 80: Conductivity (Contacting) Process Variable
Stratos Multi E401N 6.10 Conductivity (Contacting) Process Variable Note: Function check (HOLD) is active. Note: After changing the process variable or measuring mode, Stratos Multi retains its settings but needs to be reconfigured. Selecting a Memosens Conductivity Sensor  ...
Page 81 Stratos Multi E401N Selecting an Analog Conductivity Sensor   Parameter Setting Sensor Selection [I] [II] Sensor Selection [II] Selection of a conductivity sensor connected to the MK-COND025N measuring module: Module: MK-COND Mode: Analog Adjustable parameters for analog conductivity sensors ...
Page 82: Input Filter
Stratos Multi E401N 6.10.1 Input Filter Selection of the filter behavior:     Parameter Setting Administrator Level [I] [II] … Cond Input Filter Filter Selection Description The measured value is not filtered. If there are no faults at the sensor due to the medium (e.g., due to gas bubbles, contamina-...
Page 83 Stratos Multi E401N Example of filter behavior with the “Smart” and “Filter time 30 s” settings: Eingangsfilter Smart 30s Smart input filter, filter time 30 s Eingangs Messwert Measured Value Jump delay Faults with a duration of less than 30 s are hidden by the input filter.
Page 84: Sensor Data
Stratos Multi E401N 6.10.2 Sensor Data Memosens sensors provide relevant sensor data automatically. The sensor type must be selected if using analog sensors:   Parameter Setting [II] Analog … Sensor Data Sensor Data Sensor Type 2-El. Sensor Nom. Cell Constant 1.000 /cm...
Page 85 Stratos Multi E401N In the menu item, select whether and how off-limit values should be displayed: Message No message. Failure A failure message is shown for off-limit conditions; the corresponding NAMUR icon is displayed. If “Display Color NE107” is set, the measurement display is shown with red backlighting.
Page 86: Calibration Presettings
Stratos Multi E401N 6.10.3 Calibration Presettings The calibration presettings can be defined in the parameter settings or adjusted directly in the Calibra- tion menu prior to the calibration. Calibration Mode: Presetting of calibration mode, e.g., Automatic, Manual, Product Calibration, Data...
Page 87: Concentration (Tan Option Fw-E009)
Stratos Multi E401N 6.10.5 Concentration (TAN Option FW-E009) With TAN option FW-E009, the substance concentration in percent by weight (wt%) can be determined for H , HNO , HCl, NaOH, NaCl, and Oleum from the measured conductivity and temperature values. A custom solution can also be specified.
Page 88: Messages
Stratos Multi E401N 6.10.8 Messages All values determined by the measuring module or sensor can generate messages. Message parameters can be set for the following process variables: • Conductivity • Resistivity • Concentration (with TAN option FW-E009) • Temperature • Salinity...
Page 89: Conductivity (Inductive) Process Variable
Stratos Multi E401N 6.11 Conductivity (Inductive) Process Variable Note: Function check (HOLD) is active. Note: After changing the process variable or measuring mode, Stratos Multi retains its settings but needs to be reconfigured. Selecting a Digital Toroidal Conductivity Sensor ...
Page 90 Stratos Multi E401N Adjustable Parameters for Digital or Memosens Sensors for Inductive Conductivity  Parameter Setting [I] [II] Digital/Memosens CondI Submenu Description Enable/disable suppression of interference pulses. Input Filter Enable/disable display of the Sensoface icon. Sensor Data If “Other Digital” is selected: Sensor Data, p.
Page 91: Sensor Data
, select the used temperature probe and whether the temperature is to Temperature Detection be measured automatically or manually during measurement and/or calibration. Note: The sensor coding for unknown sensor types can be requested from Knick (see the back page of this document for contact details) Sensoface The Sensoface icons provide users with diagnostic information on the wear and required maintenance of the sensor.
Page 92 Stratos Multi E401N Enabling/Disabling Sensoface Sensoface is enabled and disabled in the submenu: Sensor Data   Parameter Setting [I] [II] [Sensor] Sensor Data Note: After a calibration, a smiley is always displayed for confirmation, even if Sensoface is disabled.
Page 93: Calibration Presettings
Stratos Multi E401N Setting SIP Counters  Sensor Monitoring Details SIP Counter : Off or individual Monitoring If you select “Individual”: Enter the maximum number of SIP cycles. In the menu item, select whether and how off-limit values should be displayed: Message No message.
Page 94: Concentration (Tan Option Fw-E009)
Stratos Multi E401N The settings are made in the submenu: TC Process Medium   Parameter Setting [I] [II] … Cond(I) TC Process Medium 6.11.4 Concentration (TAN Option FW-E009) With TAN option FW-E009, the substance concentration in percent by weight (wt%) can be determined...
Page 95: Messages
Stratos Multi E401N 6.11.7 Messages All values determined by the measuring module or sensor can generate messages. Message parameters can be set for the following process variables: • Conductivity • Resistivity • Concentration (with TAN option FW-E009) • Temperature • Salinity...
Page 96: Dual Conductivity Measurement
Stratos Multi E401N 6.12 Dual Conductivity Measurement Analog 2-Channel Conductivity Measurement with the MK-CC065N Measuring Module The module can operate with two 2-electrode conductivity sensors, each with a Pt1000 temperature probe. Select the MK-CC065N measuring module:   Parameter Setting...
Page 97: Oxygen Process Variable
Stratos Multi E401N 6.13 Oxygen Process Variable Note: Function check (HOLD) is active. Note: After changing the process variable or measuring mode, Stratos Multi retains its settings but needs to be reconfigured. Note: Oxygen measurements in low oxygen concentrations require TAN option FW-E015.
Page 98 Stratos Multi E401N Selecting the SE740 (LDO) Optical Oxygen Sensor   Parameter Setting Sensor Selection [I] [II] Sensor Selection [I] Selection of the SE740 oxygen sensor connected to the RS-485 interface (terminals 1 … 6): Process variable: Auto or oxygen Mode:...
Page 99 Stratos Multi E401N Selecting a Digital ISM Oxygen Sensor (TAN Option FW-E053)   Parameter Setting Sensor Selection [I] [II] Sensor Selection [II] Selection of an ISM oxygen sensor connected to the MK-OXY046N measuring module: Module: MK-OXY Mode: Adjustable parameters for ISM oxygen sensors ...
Page 100: Sensor Data
Stratos Multi E401N Submenu Description Enable/disable display of Sensoface messages and Sensoface Sensoface icons. Option to enter individual limit values for monitoring zero Sensor Monitoring Details point and slope. Disable Sensocheck sensor monitoring or select whether Sensocheck should generate failure or maintenance required messages.
Page 101 Stratos Multi E401N is selected, the Sensoface messages of all channels are output via the selected contact. Sensoface is selected, you can output the Sensoface messages of a specific channel via the Sensoface (Channel) selected contact. Sensoface monitors the oxygen sensor for slope, zero point, settling time, and sensor wear. Sensoface is displayed if Sensocheck was enabled during parameter setting.
Page 102 Stratos Multi E401N When a sensor is installed, cleaning (cleaning in place) and sterilization (sterilization in place) cycles are counted to measure the load on the sensor, e.g., in biotechnology applications. Note: If measurements are generally taken at high temperatures (> 55 °C/131 °F), the counters should be switched off.
Page 103: Calibration Presettings
Stratos Multi E401N Setting Autoclaving Counters  Sensor Monitoring Details Autoclaving Counter : “Off” or “Individual” Monitoring If you select “Individual”: Enter the maximum number of autoclaving cycles. In the menu item, select whether and how off-limit values should be displayed: Message No message.
Page 104: Salinity Correction
Stratos Multi E401N The settings are made in the submenu: Pressure Correction   Parameter Setting [I] [II] … Oxy Pressure Correction Setting Automatic Pressure Correction (TAN Option FW-E051) Open the submenu. Ext. Pressure Transmitter Select current input 0 … 20 mA or 4 … 20 mA.
Page 105: Flow
Stratos Multi E401N Displaying Messages Switch to the Diagnostics menu if the “Failure” , “Maintenance Required” or “Out of Specifica- tion” icons are flashing on the display:   Menu Selection Diagnostics Message List All active messages are displayed in the menu item with the following informa- ✓...
Page 106: Calibration/Adjustment
Stratos Multi E401N 7 Calibration/Adjustment Menu Selection Calibration Back Lingua/语言 Note: During calibration, the function check mode (HOLD) is active for each of the calibrated measur- ing channels. The outputs respond as configured. During calibration, remains in calibration mode until stopped by personnel. Stratos Multi remains in calibration mode until stopped by qualified personnel.
Page 107: Calibration/Adjustment Memosens
Stratos Multi E401N First Adjustment Note: Function active for ISM pH/ORP sensors and amperometric ISM oxygen sensors. When you open the Calibration menu, you can choose to save the current calibration as the first adjustment. The adjustment record values are then shown as a reference in the diagnostics menu.
Page 108: Calibration Procedure
Stratos Multi E401N 7.2.2 Calibration Procedure One-point Calibration The sensor is calibrated with just one buffer solution. A one-point calibration is useful and permissible if the measured values are close to the sensor zero point, such that the change in sensor slope is of mi- nor significance.
Page 109: Temperature Compensation During Calibration
Stratos Multi E401N Three-point Calibration The sensor is calibrated with three buffer solutions. The zero point and slope are calculated with a line of best fit in accordance with DIN 19268. The zero point and slope of the sensor are subsequently adjusted.
Page 110: Calibration Mode: Calimatic
7.2.5 Calibration Mode: Calimatic Calibration with Automatic Buffer Recognition During automatic calibration with Knick, the sensor is immersed in one, two or three buffer solutions. Stratos Multi automatically detects the nominal buffer value on the basis of the sensor voltage and the measured temperature.
Page 111: Calibration Mode: Manual
Stratos Multi E401N Calibration record Time of Calibration 20.02.20 15:51 Cal Mode Calimatic Zero Point pH 7.01 Slope 59.03 mV/pH Calibrate Adjust 7.2.6 Calibration Mode: Manual During calibration with manual entry of buffer values, the sensor is immersed in one, two, or three buffer solutions.
Page 112: Calibration Mode: Product
Stratos Multi E401N Start calibration with right softkey: Next. Calibration with second buffer is performed. ✓ Proceed as for one-point calibration. For three-point calibration, the process uses the third buffer accordingly. The calibration record is displayed. Confirm with right softkey: Adjust, the calibration values ob- ✔...
Page 113: Calibration Mode: Data Entry
Stratos Multi E401N Step 2: Lab value is present. Open the Product Calibration menu again. Calibration Calibration Mode Product (Step 2: Lab Value) Back Next Right softkey: Next Enter the lab value and confirm with enter. Confirm with right softkey: Next or repeat calibration with left softkey: Cancel.
Page 114: Calibration Mode: Isfet Zero Point
Stratos Multi E401N 7.2.9 Calibration Mode: ISFET Zero Point Setting the ISFET Operating Point When Memosens ISFET sensors are used for pH measurement, the individual operating point of the sensor first needs to be determined. This should be in the pH 6.5 … pH 7.5 range. The sensor is im- mersed in a buffer solution with a pH value of 7.00 for this purpose.
Page 115: Orp Process Variable Calibration/Adjustment
Stratos Multi E401N 7.3 ORP Process Variable Calibration/Adjustment Note: During calibration, the function check mode (HOLD) is active for each of the calibrated measur- ing channels. The outputs respond as configured. • Calibration: Detect deviations without readjustment of calibration data •...
Page 116: Calibration Mode: Orp Check
Stratos Multi E401N Start calibration with right softkey: Next. When the drift check is complete, the measured temperature and ORP are displayed. ✓ The time for the measuring voltage to stabilize can be shortened with the left softkey: Exit (without drift check: reduced accuracy of calibration values).
Page 117: Calibration Mode: Temperature
Stratos Multi E401N 7.3.5 Calibration Mode: Temperature Adjusting the Temperature Detector This function is used to adjust the individual tolerance of the temperature detector or cable lengths to increase temperature measurement accuracy. The adjustment requires an accurate measurement of the process temperature with a calibrated refer- ence thermometer.
Page 118: Conductivity (Contacting) Process Variable Calibration/Adjustment
Stratos Multi E401N 7.4 Conductivity (Contacting) Process Variable Calibration/Adjustment Note: During calibration, the function check mode (HOLD) is active for each of the calibrated measur- ing channels. The outputs respond as configured. • Calibration: Detect deviations without readjustment of calibration data •...
Page 119: Calibration/Adjustment Options
Stratos Multi E401N 7.4.3 Calibration/Adjustment Options • Automatic calibration: Automatic with standard calibration solution • Manual: Manual entry of a calibration solution • Product: Product calibration (calibration with sampling) • Data entry: Data entry of premeasured sensors • Temperature: Temperature detector adjustment 7.4.4 Calibration Mode: Automatic...
Page 120: Calibration Mode: Manual
Stratos Multi E401N 7.4.5 Calibration Mode: Manual Manual Calibration Specifying a Calibration Solution During calibration with manual entry of the conductivity value of the calibration solution, the sensor is immersed in a calibration solution. Stratos Multi calculates a conductivity/calibration temperature pair value.
Page 121: Calibration Mode: Product
Stratos Multi E401N 7.4.6 Calibration Mode: Product Calibration by Sampling If the sensor cannot be removed – e.g., for sterility reasons – its cell constant can be determined by “sampling”. The currently measured value (conductivity or concentration ) of the process is stored by Stratos Multi for this purpose.
Page 122: Calibration Mode: Data Entry
Stratos Multi E401N Right softkey: Close If required, exit calibration with the left softkey: Back. Note: The icon indicates that product calibration has not yet been completed. Step 2: Lab value is present. Open the Product Calibration menu again. Calibration...
Page 123: Calibration Mode: Temperature
Stratos Multi E401N 7.4.8 Calibration Mode: Temperature Adjusting the Temperature Detector This function is used to adjust the individual tolerance of the temperature detector or cable lengths to increase temperature measurement accuracy. The adjustment requires an accurate measurement of the process temperature with a calibrated refer- ence thermometer.
Page 124: Conductivity (Inductive) Process Variable Calibration/Adjustment
Stratos Multi E401N 7.5 Conductivity (Inductive) Process Variable Calibration/Adjustment Note: During calibration, the function check mode (HOLD) is active for each of the calibrated measur- ing channels. The outputs respond as configured. • Calibration: Detect deviations without readjustment of calibration data •...
Page 125: Calibration/Adjustment Options
Stratos Multi E401N 7.5.3 Calibration/Adjustment Options • Automatic: Automatic with standard calibration solution • Manual: Manual entry of a calibration solution • Product: Product calibration (calibration with sampling) • Zero point: Zero Point Correction • Installation factor: Entry of an installation factor (with Memosens sensors) •...
Page 126: Calibration Mode: Manual
Stratos Multi E401N 7.5.5 Calibration Mode: Manual Manual Calibration Specifying a Calibration Solution During calibration with manual entry of the conductivity value of the calibration solution, the sensor is immersed in a calibration solution. Stratos Multi calculates a conductivity/calibration temperature pair value.
Page 127: Calibration Mode: Product
Stratos Multi E401N 7.5.6 Calibration Mode: Product Calibration by Sampling If the sensor cannot be removed – e.g., for sterility reasons – its cell factor can be determined by “sam- pling”. The currently measured value (conductivity or concentration ) of the process is stored by Stratos Multi for this purpose.
Page 128: Calibration Mode: Zero Point
Stratos Multi E401N Right softkey: Close If required, exit calibration with the left softkey: Back. Note: The icon indicates that product calibration has not yet been completed. Step 2: Lab value is present. Open the Product Calibration menu again. Calibration...
Page 129: Calibration Mode: Installation Factor
Stratos Multi E401N Valid for Inductive Conductivity with Memosens Sensors: The calibration values are displayed following successful zero calibration. Press the right softkey: Next. The message “Adjustment Successful” is displayed. ✓ 7.5.8 Calibration Mode: Installation Factor If using a Memosens sensor in a tight space, enter the installation factor.
Page 130: Calibration Mode: Temperature
Stratos Multi E401N 7.5.10 Calibration Mode: Temperature Adjusting the Temperature Detector This function is used to adjust the individual tolerance of the temperature detector or cable lengths to increase temperature measurement accuracy. The adjustment requires an accurate measurement of the process temperature with a calibrated refer- ence thermometer.
Page 131: Calibration/Adjustment Oxygen Process Variable
Stratos Multi E401N 7.6 Calibration/Adjustment Oxygen Process Variable Note: During calibration, the function check mode (HOLD) is active for each of the calibrated measur- ing channels. The outputs respond as configured. • Calibration: Detect deviations without readjustment of calibration data •...
Page 132: Calibration/Adjustment Options
Stratos Multi E401N 7.6.2 Calibration/Adjustment Options • In air/water: Automatic calibration in water/air • Data entry: Data entry of premeasured sensors • Product: Product calibration by entering saturation %air, concentration, or partial pressure • Zero point: Zero correction • Temperature: Temperature detector adjustment 7.6.3 Calibration Mode: In Air...
Page 133: Calibration Mode: In Water
Stratos Multi E401N 7.6.4 Calibration Mode: In Water Automatic Calibration in Water The slope is corrected with the saturation value (100 %) related to saturation with air. Calibration Procedure Note: Ensure sufficient sensor incident flow. (See the oxygen sensor specifications.) The calibration solution must be in equilibrium with air.
Page 134: Calibration Mode: Data Entry
Stratos Multi E401N 7.6.5 Calibration Mode: Data Entry Entry of values for slope and zero point of the sensor, related to 25 °C/77 °F, 1013 mbar/14.69 psi. Slope = sensor current at 100% atmospheric oxygen, 25 °C/77 °F, 1013 mbar (14.69 psi) Calibration Procedure  Calibration [I] [II] ... Oxy When you access calibration, the calibration values selected in the calibration presettings are used.
Page 135 Stratos Multi E401N Product calibration is performed in 2 steps. Calibration Step 1: Sampling [Save] Saturation 80.3 %Air Pressure 1014 mbar Temperature 23.3°C Enter Lab Value [Entry] Entry Save Step 1: Take sample. ✓ The measured value and temperature at the time of sampling are displayed.
Page 136: Calibration Mode: Zero Point
Stratos Multi E401N 7.6.7 Calibration Mode: Zero Point Zero Point Correction For trace measurements below 500 ppb, we recommend calibrating the zero point. (TAN option FW‑E015, “Oxygen Measurement in Low Oxygen Concentrations”) If a zero point correction is performed, the sensor should remain in the calibration solution for 10 ...
Page 137: Diagnostics
Stratos Multi E401N 8 Diagnostics Menu Selection Diagnostics Back Lingua/语言 Diagnostic functions can be directly opened from the measuring mode with the right softkey. To do this, the function must be assigned to the Softkey (1): Favorites menu Function Control, p. 46 ...
Page 138: Logbook
Stratos Multi E401N You can scroll forwards and backwards with the up/down arrow keys. You will find an overview of message texts with notes on troubleshooting in the “Troubleshooting” chapter. Messages, p. 147 ➜ The error message disappears from the display around 2 s after troubleshooting.
Page 139: Device Information
Stratos Multi E401N 8.1.4 Device Information Device Information Device type Stratos Multi E401N Serial number 8655400 Firmware 01.00.00 Build 8623 Hardware Back The following device information is displayed for the basic unit and any connected module: • Device type • Serial number •...
Page 140: Channel I/Ii Diagnostic Functions
Stratos Multi E401N 8.1.7 Channel I/II Diagnostic Functions The submenus vary depending on the sensor type. Key functions are set out below. Sensor Information Note: Function active for digital sensors. The Sensor Information submenu shows data from the currently connected digital sensor, e.g., manufacturer, order no., serial no., firmware and hardware version, last calibration, operating time:...
Page 141 Stratos Multi E401N Sensor Wear Monitor Note: Function active for digital sensors. The sensor wear monitor shows the sensor operating time and maximum temperature during the operating time, as well as wear and the estimated remaining time. For oxygen sensors, the number of membrane replacements and calibrations is also displayed: ...
Page 142: Maintenance Functions
Stratos Multi E401N 9 Maintenance Functions Menu Selection Maintenance Back Lingua/语言 Note: Function check (HOLD) is active. The current outputs and relay contacts behave in accordance with the parameter settings. Return to measuring mode to exit the function check, e.g., with the right softkey: Back to Meas.
Page 143: Channel I/Ii Maintenance Functions
Stratos Multi E401N 9.2 Channel I/II Maintenance Functions Memosens/analog Memosens SE740 ISM Oxy ISM pH pH/Cond/CondI Sensor Monitor Autoclaving Counters Membrane Body Replacement Interior Body Replacement 9.2.1 Sensor Monitor   Maintenance [I] [II] [Sensor] Sensor Monitor Display of ongoing measured values (sensor monitor) when function check (HOLD state) is active at...
Page 144: Manual Function Test
Stratos Multi E401N 9.3 Manual Function Test 9.3.1 Current Source The output current can be manually specified for the function test (range 0 … 22 mA):  Maintenance Current Source Select the current output. Use the arrow keys to enter a valid current value for the corresponding output.
Page 145: Maintenance
(HOLD) must be activated in the device’s Maintenance menu. This can also be done in the Parameter Settings menu (Operator or Administrator level). Repair Users cannot repair Stratos Multi and the modules. Please direct your repair requests to Knick Elektronische Messgeräte GmbH & Co. KG at www.knick-international.com.
Page 146: Troubleshooting
Stratos Multi E401N 11 Troubleshooting 11.1 Failure Conditions Messages and errors are displayed with the corresponding NAMUR icon and the measured value display of the corresponding channel changes color. The message is recorded in the logbook with the date and time.
Page 147: Messages
Stratos Multi E401N 11.2 Messages Message Type Display Color in Accordance with NE107 Failure Maintenance Required Blue Out of Specification Yellow Function check Orange Info Info text, appears directly in the relevant menu. Message type is adjustable: Failure or Maintenance Required The colored display backlighting can be switched off: ...
Page 148 Stratos Multi E401N System Control/General Type Message Text Possible Cause Remedy F008 Error in the adjustment data Disable device (approx. 10 s). Adjustment Data If the message persists, send in the device. F009 Error in the firmware Disable device (approx. 10 s).
Page 149 Stratos Multi E401N Type Message Text Possible Cause Remedy F201 Internal communication error Disable device (approx. 10 s). KBUS Error If the message persists, send in the device. F202 Internal system error Disable device (approx. 10 s). System Failure If the message persists, send in the device.
Page 150 Stratos Multi E401N Current Output/Relay Contacts Type Message Text Possible Cause Remedy B001 Data error in the parameter set- Completely reconfigure the device. Configuration Data tings Loss B070 Current output 1: The selected  Current I1 Span Parameter Setting Inputs/Outputs span is too small/too big.
Page 151 Stratos Multi E401N Type Message Text Possible Cause Remedy B084 Faulty parameter setting for Current output 3: Check parameter settings Current I3 Parameter current output I3 B085 Current output 4: The selected   Current I4 Span Parameter Setting Inputs/Outputs Current Outputs span is too small/too big.
Page 152 Stratos Multi E401N pH, ORP Type Message Text Possible Cause Remedy P001 Data error in the parameter Completely reconfigure the device. Configuration Data settings Loss P008 Error in the adjustment data Disable device (approx. 10 s). Adjustment Data If the message persists, send in the device.
Page 153 Stratos Multi E401N Type Message Text Possible Cause Remedy P020 Value above/below measuring Check measuring range, adjust if required. ORP Range range. No ORP sensor connected, sensor Check sensor connection. Connect ORP incorrectly connected. sensor if required. Sensor or sensor cable defective.
Page 154 Stratos Multi E401N Type Message Text Possible Cause Remedy P062 par Reference impedance outside Sad Sensoface: limits Ref Imp. Sensor or sensor cable defective. Check sensor and cables, replace if required. With MK‑PH015 module without Insert jumper between terminals B and C.
Page 155 Stratos Multi E401N Type Message Text Possible Cause Remedy P120 If sensor check is active: An im- Connect correct sensor or deactivate function. Wrong Sensor permissible sensor is connected (Sensor Verif.) to the device. P121 Digital sensor delivers an error.
Page 156 Stratos Multi E401N Calculation Block pH/pH Type Message Text Possible Cause Remedy A001 Data error in the parameter settings Completely reconfigure the device. Configuration Data Loss A010 pH value difference: Value above/ Check both pH values. pH Diff Range below device limits.
Page 157 Stratos Multi E401N Type Message Text Possible Cause Remedy A200 Faulty configuration of calculation Check parameter settings: Param. Calculation Block blocks.  Parameter Setting System Control  Calculation Blocks Conductivity (Contacting) Type Message Text Possible Cause Remedy C001 Data error in the parameter set- Completely reconfigure the device.
Page 158 Stratos Multi E401N Type Message Text Possible Cause Remedy C020 Value above/below measuring Check measuring range, adjust if required. Resistivity Meas. range. Range Sensor connected incorrectly or Check sensor connection. Connect sensor if not at all. required. Sensor cable connected incor- Check sensor cable, replace if required.
Page 159 Stratos Multi E401N Type Message Text Possible Cause Remedy C045 Value above measuring range. Check measuring range, adjust if required. Conductance Range Sensor connected incorrectly or Check sensor connection. Connect sensor if not at all. required. Wrong sensor for the measuring Connect the right sensor.
Page 160 Stratos Multi E401N Type Message Text Possible Cause Remedy C204 Info Drift criterion not adhered to Calibration: Sensor during calibration. Unstable Faulty calibration. Repeat calibration/adjustment. Sensor cable/connection faulty. Check sensor cable/connection, replace if required. Sensor worn. Replace sensor. Calculation Block Cond/Cond...
Page 161 Stratos Multi E401N Type Message Text Possible Cause Remedy E032 Value below configured monitoring RATIO LO limit. E033 Value above configured monitoring RATIO HI limit. E034 Value above configured monitoring RATIO HI_HI limit. E035 Passage: Value above/below device Check both conductivity values.
Page 162 Stratos Multi E401N Type Message Text Possible Cause Remedy E060 Check both conductivity values.  For selection pH Range Parameter Setting [CI/II] Calculation Cond/Cond  : “Usage”: “pH-VGB- pH Value S-006“:pH measuring range outside permissible range of VGB technical guideline. Alkalizing agent used does not Check the choice of alkalizing match parameter setting.
Page 163 Stratos Multi E401N Conductivity (Inductive) Type Message Text Possible Cause Remedy T001 Data error in the parameter set- Completely reconfigure the device. Configuration Data tings Loss T008 Error in the adjustment data Disable device (approx. 10 s). Adjustment Data If the message persists, send in the device.
Page 164 Stratos Multi E401N Type Message Text Possible Cause Remedy T021 Value below configured monitor- Resistivity LO_LO ing limit. T022 Value below configured monitor- Resistivity LO ing limit. T023 Value above configured monitor- Resistivity HI ing limit. T024 Value above configured monitor- Resistivity HI_HI ing limit.
Page 165 Stratos Multi E401N Type Message Text Possible Cause Remedy T061 par Sensor defective. Replace sensor. Sad Sensoface: Secondary Coil T063 par Adjust sensor zero point. Sad Sensoface: Zero Point T064 par Faulty calibration. Repeat calibration/adjustment. Replace Sad Sensoface: sensor if required.
Page 166 Stratos Multi E401N Oxygen Type Message Text Possible Cause Remedy D001 Data error in the parameter set- Completely reconfigure the device. Configuration Data tings Loss D008 Error in the adjustment data Disable device (approx. 10 s). If the message Adjustment Data persists, send in the device.
Page 167 Stratos Multi E401N Type Message Text Possible Cause Remedy D023 Value above configured monitor- Concentration HI ing limit. D024 Value above configured monitor- Concentration HI_HI ing limit. D025 Value above/below measuring Check measuring range, adjust if required. Partial Pressure range.
Page 168 Stratos Multi E401N Type Message Text Possible Cause Remedy D061 par Sensor calibration/adjustment Calibrate/adjust sensor. Sad Sensoface: Zero overdue. Point Faulty calibration. Repeat calibration/adjustment. Not enough electrolyte in sensor Check/refill electrolyte. Sensor defective. Replace sensor. D062 par Readjust configured sensor.
Page 169 Stratos Multi E401N Type Message Text Possible Cause Remedy D121 Digital sensor delivers an error. Replace sensor. Sensor Error Sensor no longer functions prop- (Factory Settings) erly. D122 Digital sensor delivers an error. Calibrate/adjust sensor. Sensor Memory (Cal The calibration data are faulty.
Page 170 Stratos Multi E401N Type Message Text Possible Cause Remedy H021 Value below configured monitoring Conc. (Liquid) Diff LO_LO limit. H022 Value below configured monitoring Conc. (Liquid) Diff LO limit. H023 Value above configured monitoring Conc. (Liquid) Diff HI limit. H024 Failure: Value above configured Conc.
Page 171 Stratos Multi E401N Uniclean EPC700 (FW-E111) Type Message Text Possible Cause Remedy Y001 Data error in the parameter set- Reset to factory settings and set completely Configuration Data tings new parameters. Loss Y002 Contact used in program Check parameter settings and correct if...
Page 172: Sensocheck And Sensoface
Stratos Multi E401N 11.3 Sensocheck and Sensoface µS 07:00 0154 µS 07:00 25.3 25.3 °C °C 25.3 13.5 °C °C Menu Favorites Menu Menu Favorites Menu Happy Sensoface Neutral Sensoface Sad Sensoface The Sensoface icons provide users with diagnostic information on the wear and required maintenance of the sensor.
Page 173 Stratos Multi E401N Sensoface Criteria Sensoface Slope Zero Point Happy 53.3 … 61 mV/pH pH 6 … 8 < 53.3 mV/pH or < pH 6 or > 61 mV/pH > pH 8 Conductivity (Contacting) Sensoface Cell Constant Analog Sensors Memosens Happy 0.005 cm 0.5x nom. cell constant … 2x nom. cell constant … 19.9999 cm < 0.005 cm < 0.5x nom. cell constant or > 19.9999 cm ...
Page 174 Stratos Multi E401N Sensocheck Process variable Sensocheck Function Automated monitoring of glass and reference electrodes Oxygen: Monitoring of membrane/electrolyte Conductivity: Notes on sensor state Enable/Disable Sensocheck Sensocheck is enabled and disabled in the submenu: Sensor Data With Memosens:  ...
Page 175: Decommissioning
For details on how to return and dispose of electrical and electronic devices in an environmentally friendly manner, please refer to the manufacturer's declaration on our website. If you have any queries, suggestions, or questions about how Knick recycles electrical and electronic waste devices, please send us an email: support@knick.de...
Page 176: Accessories
Stratos Multi E401N 13 Accessories Mounting Accessories Dimension Drawings, p. 20 ➜ Accessories Order No. Pipe-mount kit ZU0274 Panel-mount kit ZU0738 Protective hood ZU0737 M12 socket for sensor connection ZU0860 with Memosens cable/M12 connector Memory cards, non-Ex Order No. Data Card...
Page 177 Stratos Multi E401N Deactivating the Data Card Note: When using a Data Card: Before disconnecting the supply voltage and before removing, the memory card must be deactivated to prevent data being exposed to potential loss. Open the menu. Maintenance Open/Close Memory Card With right softkey: Close, exit access to the memory card.
Page 178: Memory Card Types
Stratos Multi E401N Memory Card Types Icon Card Type (original accessory) Purpose Data Card Data recording (e.g., configuration, parameter sets, logbook, mea- ZU1080-S-N-D surement recorder data). When data is being transmitted, the icon flashes. The Data Card can be used in conjunction with the follow-...
Page 179: Tan Options
Stratos Multi E401N 14 TAN Options The functions described in the following are available after the corresponding TAN option is activated. Option Activation, p. 48 ➜ Add-on Functions (TAN Options) Order No. pH Buffer Table: Entry of individual buffer set FW-E002 pH Buffer Table: Entry of Individual Buffer Set (FW-E002), p.
Page 180: Ph Buffer Table: Entry Of Individual Buffer Set (Fw-E002)
Stratos Multi E401N 14.1 pH Buffer Table: Entry of Individual Buffer Set (FW-E002) For the buffer table that can be entered, the FW-E002 add-on function must be activated in the device with a TAN. Option Activation, p. 48 ➜ An individual buffer set with 3 buffer solutions can be entered. To do so, the nominal, temperature- corrected buffer values for the temperature range 0 … 95 °C (32 … 203 °F) are entered in increments of...
Page 181: Current Characteristic (Fw-E006)
Stratos Multi E401N 14.2 Current Characteristic (FW-E006) For the current characteristic that can be entered, the FW-E006 add-on function must be activated in the device via TAN. Option Activation, p. 48 ➜ Assignment of output current to the process variable in increments of 1 mA.
Page 182 Stratos Multi E401N Specifying a Special Concentration Solution for Conductivity Measurement For a customer-specific solution, 5 concentration values A-E can be entered in a matrix with 5 default temperature values 1-5. First enter the 5 temperature values, and then the associated conductivity values for each of the concentrations A-E.
Page 183: Concentration Curves
Stratos Multi E401N 14.3.1 Concentration Curves Conductivity [mS/cm] versus substance concentration [wt%] and media temperature [°C] Sodium Chloride Solution NaCl c [wt%] 1 Range within which concentration determination is not possible. Hydrochloric Acid HCl c [wt%] 1 Range within which concentration determination is not possible.
Page 184 Stratos Multi E401N Caustic Soda Solution NaOH c [wt%] 1 Range within which concentration determination is not possible. Sulfuric Acid H c [wt%] 1 Range within which concentration determination is not possible.
Page 185 Stratos Multi E401N Nitric Acid HNO c [wt%] 1 Range within which concentration determination is not possible. Oleum H •SO 120 °C 100 °C 85 °C 70 °C 55 °C 40 °C 25 °C 10 °C c [wt%] 1 Range within which concentration determination is not possible.
Page 186: Pfaudler Sensors (Fw-E017)
Stratos Multi E401N 14.4 Pfaudler Sensors (FW-E017) This option enables simultaneous pH value and temperature measurement with Pfaudler pH sensors or pH sensors with a zero point and/or a slope deviating from pH 7, e.g., pH sensors with a zero point at pH 4.6.
Page 187 Stratos Multi E401N Isothermal Intersection Point The isothermal intersection point is the intersection of two calibration lines plotted for two different temperatures. The coordinates of this intersection are labeled V and pH . The isothermal intersection point remains constant for each sensor.
Page 188: Calculation Blocks (Fw-E020)
Stratos Multi E401N 14.5 Calculation Blocks (FW-E020) After activating TAN option FW-E020, two calculation blocks are available to calculated the existing process variables to new variables. Option Activation, p. 48 ➜ The general device stat (NAMUR signals) is also taken into account.
Page 189: Calculation Formulas
Stratos Multi E401N Parameter setting for calculation block. Cond, Cond Calculation (Admin.) Temperature Diff. Diff. = (B-A) Diff. = (B-A) Cond Diff. Diff. = (A-B) Resistivity Diff. Diff. = (B-A) Ratio Diff. = abs(A-B) Passage Rejection Back Process Variable Combinations in the Calculation Block...
Page 190: Typical Application
Stratos Multi E401N In the Cond/Cond calculation, it is possible to determine a pH value from the measured conductivity values. The settings are made in the submenu: pH Value Parameters that can be set for pH value calculation  ...
Page 191 Stratos Multi E401N Recommended pH ranges: 10 ± 0.2 for < 136 bar operating overpressure or 9.5 ± 0.2 for > 136 bar operating overpressure µS/cm µS/cm Conductivity measured downstream of the cation exchanger (Cond2) Conditioning the boiler water in natural circulation boilers with sodium hydroxide. Relationship between the pH value and the conductivity measured upstream or downstream of the cation exchanger.
Page 192: Hart (Fw-E050)
Stratos Multi E401N 14.6 HART (FW-E050) Stratos Multi with TAN option FW-E050 is registered by the HART Communication Foundation. The device meets the requirements of the HCF Specification, Revision 7. The HART interface of the device is activated as follows: Activate the HART interface on the device via TAN option number.
Page 193: Digital Ism-Sensors (Fw-E053)
Stratos Multi E401N 14.7 Digital ISM-Sensors (FW-E053) This option enables digital ISM sensors to be used for measuring pH, ORP and oxygen (amperometric). The FW-E053 add-on function must be activated in the device via TAN for this purpose. Option Activation, p. 48 ➜...
Page 194: Parameter Sets 1-5 (Fw-E102)
Stratos Multi E401N 14.8 Parameter Sets 1-5 (FW-E102) To use parameter sets 1-5, add-on function FW‑E102 must be activated in the device via TAN. Option Activation, p. 48 ➜ Saving a Parameter Set on the Data Card Two parameter sets (A, B) are present in the device. Parameter set A can be saved on a Data Card.
Page 195 Stratos Multi E401N Loading a Parameter Set from the Data Card A parameter set saved on the Data Card (1, 2, 3, 4 or 5) can be loaded to the device-internal parameter set A.   Parameter Setting System Control Parameter Sets Select the number of parameter sets.
Page 196: Measurement Recorder (Fw-E103)
Stratos Multi E401N 14.9 Measurement Recorder (FW-E103) To use the measurement recorder, add-on function FW-E103 must be activated in the device via TAN. Option Activation, p. 48 ➜ The measurement recorder logs measured values and additional values depending on its parameter setting.
Page 197 Stratos Multi E401N Deleting Measurement Recorder Data   Parameter Setting System Control Measurement Recorder Clear measurement recorder: Select “Yes”. Confirm with right softkey: OK. Saving on the Data Card Note: The device-internal memory has a limited memory capacity and continuously overwrites the oldest data sets after reaching maximum memory capacity.
Page 198: Logbook (Fw-E104)
Stratos Multi E401N 14.10 Logbook (FW-E104) To record the logbook entries in a file, the FW‑E104 add-on function must be activated in the device via TAN. Option Activation, p. 48 ➜ See also Logbook, p. 48 ➜ Saving on the Data Card Using the Data Card Memory Card, p.
Page 199: Firmware Update (Fw-E106)
Stratos Multi E401N 14.11 Firmware Update (FW-E106) Note: First check whether a firmware update is relevant for your device. For the firmware update, the FW-E106 add-on function must be activated in the device via TAN. Option Activation, p. 48 ➜...
Page 200: Uniclean Epc700 (Fw-E111)
Stratos Multi E401N 14.12 Uniclean EPC700 (FW-E111) This option enables a modular Uniclean EPC700 control and cleaning system to be controlled. The FW-E111 add-on function must be activated in the device via TAN for this purpose. Option Activation, p. 48 ➜...
Page 201: Program Sequences
Stratos Multi E401N Contact Labeling For the relay contacts selected under , you can use the arrow keys to    Parameter Setting Inputs/Outputs Relay Contacts Uniclean Usage assign additional labeling. 16 positions are available for this. We recommend selecting the contact labeling such that they clearly communicate which function is triggered by the activated contact.
Page 202 Stratos Multi E401N Program steps: Program Step (Function) Description Can be used as a placeholder. Space Activates the function check of the assigned sensor channel. Function Check On Exits the function check of the assigned sensor channel. Function Check Off “Measurement”...
Page 203 Stratos Multi E401N P1 Clean (Administrator) 1. Program End Insert Before Insert After Delete Delete All Back Select and open with enter or the right arrow key. Space Select the required function with the arrow key and enter. Description of the functions Program Sequences, p.
Page 204 Stratos Multi E401N Program Examples Settings for “Continuous Measurement” Program Examples Relay Contact Basic State Name On (Closed) Probe in PROCESS Off (Open) Water Off (Open) Purge Air “Clean” Example Program (Continuous Measurement) Program Sequence: Program Step Follow-up Delay Description 5 s...
Page 205 Stratos Multi E401N Setting for Program Examples with Program Module (Only Continuous Measurement) Relay Contact Basic State Name On (Closed) Module Lock “Rinse with Program Module” Example Program (Continuous Measurement) Program Sequence: Program Step Follow-up Delay Description 5 s Function check of assignment sensor channels is activated.
Page 206 Stratos Multi E401N “Extended Rinse Duration” Example Program with Program Module (Continuous Measurement) Program Sequence: Program Step Follow-up Delay Description 5 s 1. Function Check On 25 s Contact K1 is opened: Waiting Time 5 s + Rinse Dura- 2. K1 Module Lock Off tion 20 s, incl.
Page 207 Stratos Multi E401N “Shortened Rinse Duration” Example Program with Program Module (Continuous Measurement) Program Sequence: Program Step Follow-up Delay Description 5 s 1. Function Check On 15 s Contact K1 is opened: Waiting Time 5 s + Rinse Dura- 2. K1 Module Lock Off tion 10 s, incl.
Page 208 Stratos Multi E401N “Calibrate with Program Module” Example Program (Continuous Measurement) Program Sequence: Program Step Follow-up Delay Description 5 s Function check of assignment sensor channels is activated. 1. Function Check On 45 s Contact K1 is opened: Waiting Time 5 s + Rinse 2.
Page 209 Stratos Multi E401N “Measure” Example Program (Short-Time Measurement) Settings: Relay Contact Basic State Name Off (Open) Probe in PROCESS Program Sequence: Program Step Follow-up Delay Description 10 s Contact K1 is closed. 1. K1 Probe in PROCESS On 5 s Function check of the assigned sensor channel is ended.
Page 210: Progress Bar
Stratos Multi E401N Weekly Plan (Administrator) Monday Tuesday Wednesday Thursday Copy to Mon.-Sun. Friday Copy to Mon.-Fri. Saturday Copy to Day Back If “Copy to Day” is selected, choose the required weekday. Copy to Day (Administrator) Copy “Monday” to weekday. This overwrites the old content.
Page 211: Uniclean Maintenance Menu
Stratos Multi E401N Progress bar display for program step: Continue Manually (w. Cal.) Uniclean P2 Calibrate Program Stopped. To Continue Press Next! Calibrate Next Menu Favorites Menu 14.12.4 Uniclean Maintenance Menu For active Uniclean Usage, the Maintenance menu is supplemented by a...
Page 212: Specifications
Stratos Multi E401N 15 Specifications 15.1 Power Supply (Power) Power supply, terminals 17, 18 80 V (- 15%) … 230 (+ 10%) V AC; approx. 15 VA; 45 … 65 Hz 24 V (- 15%) … 60 (+ 10%) V DC; 10 W Overvoltage category II, class II, pollution degree 2 Test voltage Type test 3 kV AC 1 min after moisture pre-treatment Routine test 1.4 kV for 2 s...
Page 213: Outputs (Selv, Pelv)
Stratos Multi E401N 15.2.2 Outputs (SELV, PELV) Power out Power output, short-circuit-proof, 0.5 W, for operating sensor SE740 Out; 3.1 V (2.99 … 3.25 V); 14 V (12.0 … 16.0 V); 24 V (23.5 … 24.9 V) Output 1, 2 Out 1, Out 2 Output current 0/4 … 20 mA, floating, max. load resistance to 500 Ω, Output 2 with galvanic connection to Outputs 3 and 4 Function Output 1: HART communication at 4 … 20 mA...
Page 214: Device
Stratos Multi E401N Contact behavior N/C or N/O Interval time 0.00 … 999.00 h (0.00 h = Cleaning function disabled) Cleaning time/Relax time 0000 … 1999 s Min./max. limit values Contact type Min./max. contacts, floating, connected to each other Contact behavior N/C or N/O Start-up delay 0000 … 9999 s...
Page 215: Ambient Conditions
Stratos Multi E401N Enclosure Material Glass fiber reinforced plastic Front unit: PBT Rear unit: PC Degree of protection IP66/IP67/TYPE 4X Outdoor (with pressure compensation) for closed device Flammability UL 94 V-0 for external parts Weight 1.2 kg (1.6 kg incl. accessories and packaging) Mounting Wall, pipe, panel mounting Color Gray RAL 7001...
Page 216: Measurement Functions
Stratos Multi E401N 15.7 Measurement Functions 15.7.1 pH Memosens Connection Terminals 1 … 5 or via module MK‑MS095N Display ranges Temperature: -20.0 … 200.0 °C / -4 … 392 °F pH value: -2.00 … 16.00 Redox potential: -1999 … 1999 mV rH value (with pH/ORP sensor): 0 … 42.5 Measurement uncertainty Dependent on sensor...
Page 217 Stratos Multi E401N pH calibration and adjustment Calibration procedure Calibration with Calimatic automatic buffer recognition Manual calibration with entry of individual buffer values Product calibration Data entry of pre-measured sensors ISFET zero point (for ISFET sensor) Temperature probe adjustment Determination of nominal zero point Max.
Page 218: Conductivity (Contacting)
Stratos Multi E401N 15.7.2 Conductivity (Contacting) Memosens Connection Terminals 1 … 5 or via module MK‑MS095N Measurement uncertainty Dependent on sensor Analog 2-electrode/4-electrode sensors Connection Via module MK‑COND025N Measuring ranges 2-electrode sensors: 0.2 µS × c … 200 mS × c (Conductance limited to 3500 mS) 4-electrode sensors: 0.2 µS × c … 1000 mS × c Measurement uncertainty ...
Page 219: Conductivity (Inductive)
Stratos Multi E401N 15.7.3 Conductivity (Inductive) Memosens or SE670/SE680K Connection Terminals 1 … 5 or via module MK‑MS095N Measurement uncertainty Dependent on sensor Analog toroidal conductivity sensors SE655/656/660 Connection Via module MK‑CONDI035N Measurement uncertainty < 1% of measured value + 0.005 mS/cm Temperature input via module Temperature detector Pt100/Pt1000/NTC 30 kΩ...
Page 220: Conductivity (Dual)
Stratos Multi E401N 15.7.4 Conductivity (Dual) 2× Memosens Connection Terminals 1 … 5 and module MK‑MS095N Measurement uncertainty Dependent on sensor 1× Memosens, 1× analog 2‑electrode/4‑electrode sensor Connection Memosens: Terminals 1 … 5 Analog sensor: Module MK‑COND025N Conductivity (Contacting), p. 218 ➜ Measurement uncertainty Dependent on sensor 2×...
Page 221: Temperature Compensation (Conductivity)
Stratos Multi E401N 15.7.5 Temperature Compensation (Conductivity) Without Linear Linear characteristic 00.00 … 19.99%/K Ref. temperature adjustable Ref. temperature 25 °C (77 °F): Natural waters in accordance with EN 27888 NaCl NaCl from 0 (ultrapure water) to 26 wt% (0 … 120 °C / 32 … 248 °F) Ultrapure water with traces of HCl (0 … 120 °C / 32 … 248 °F) Ultrapure water with traces of NH (0 … 120 °C / 32 … 248 °F)
Page 222: Oxygen
Stratos Multi E401N 15.7.7 Oxygen Operating modes Measurement in gases Measurement in liquids Memosens Connection Terminals 1 … 5 or via module MK‑MS095N Measuring principle Amperometric, With TAN option FW‑E016: Trace measurement Display range Temperature: -20.0 … 150.0 °C (-4 … 302 °F) Measurement uncertainty Dependent on sensor...
Page 223 Stratos Multi E401N Measuring ranges Standard sensor (Memosens, SE740, digital, analog) Saturation 0.0 … 600.0% Concentration 0.00 … 99.99 mg/l (ppm) (dissolved oxygen) Volume concentration in gas 0.00 … 99:99 Vol% Trace sensor “01” (Memosens, SE740, analog) Saturation 0.000 … 150.0% Concentration 0000 … 9999 µg/l / 10.00 … 20.00 mg/l (dissolved oxygen) 0000 … 9999 ppb / 10.00 … 20.00 ppm Volume concentration in gas 000.0 … 9999 ppm / 1.000 … 50.00 Vol%...
Page 224: Diagnostics And Statistics
Stratos Multi E401N 15.8 Diagnostics and Statistics Diagnostic functions Calibration data Calibration record Device self-test Automatic memory test (RAM, FLASH, EEPROM) Display test Display of all colors Keypad test Key function check Sensocheck Delay time Approx. 30 s Automated monitoring of glass and reference electrodes (can be switched off )
Page 225: Appendix
Stratos Multi E401N 16 Appendix 16.1 Channel II Wiring Examples 16.1.1 pH Analog Wiring Examples Example 1, pH Analog Measurement task: pH, temperature, glass impedance Sensors (example): SE 555X/1-NS8N Cable (example): ZU 0318 1 Core 4 pH measuring module 2 Shield...
Page 226 Stratos Multi E401N Example 2, pH Analog Measurement task: pH/ORP, temp., glass impedance, reference impedance Sensors (example): SE555X/1-NS8N, equipotential bonding: ZU0073 Temperature: e.g., Pt1000 Cable (example): 2x ZU0318 1 Core 4 Cable 2 Shield 5 Sensors 3 pH measuring module...
Page 227 Stratos Multi E401N Example 3, pH Analog Measurement task: pH, temp, glass impedance Sensor: pH sensor e.g., SE 554X/1-NVPN, cable CA/VP6ST-003A Temperature detector: Integrated 1 Core, clear 6 Shield, yellow/green 2 Shield, red 7 pH measuring module 3 Jumper! 8 VP cable...
Page 228 Stratos Multi E401N Example 4, pH Analog Measurement task: pH/ORP, temp., glass impedance, reference impedance Sensors (example): pH sensor, e.g., SE 555X/1-NVPN, cable CA/VP6ST-003A Temperature detector: Integrated 1 Equipotential bonding electrode ZU0073 6 White 2 Core, clear 7 Shield, yellow/green...
Page 229 Stratos Multi E401N Example 5, pH Analog Measurement task: pH/ORP, temp., glass impedance, reference impedance Sensors (example): PL PETR-120VP (pH/ORP combo sensor, SI Analytics) Cable (example): CA/VP6ST-003A 1 Core, transparent 6 Shield, yellow/green 2 Shield, red 7 pH measuring module...
Page 230 Stratos Multi E401N Example 6, Pfaudler Sensor Channel II, requires TAN option FW-E017 “Pfaudler sensors” 1 Pfaudler probe 3 Cable 2 pH measuring module Module pH Reiner with EP Differential, models Models 03/04 with EP Models 03/04 without VP connector...
Page 231: Orp Analog Wiring Example
Stratos Multi E401N 16.1.2 ORP Analog Wiring Example Note: Disable Sensocheck. Measurement task: ORP, temp., glass impedance, reference impedance Sensors (example): ORP: SE564X/1-NS8N Cable (example): ZU0318 1 Jumper 4 pH measuring module 2 Shield 5 Cable 3 Core 6 Sensors...
Page 232: Ism Ph Wiring Example
Stratos Multi E401N 16.1.3 ISM pH Wiring Example Channel II, requires TAN option FW-E053 “Digital ISM sensors” Measurement task: pH/ORP, temp., glass impedance, reference impedance Sensors (example): InPro 4260i (Mettler-Toledo) Cable (example): AK9 (Mettler-Toledo) 1 Shield 4 Cable 2 Core...
Page 233: Contacting Conductivity Wiring Examples
Stratos Multi E401N 16.1.4 Contacting Conductivity Wiring Examples Example 1, Cond Measurement task: Conductivity, temperature Sensors (principle): 4 electrodes 1 Set jumper between F and G if a 2-wire temperature 4 Cable detector is used! 2 Shield 5 Sensors 3 COND measuring module...
Page 234 Stratos Multi E401N Example 2, Cond Measurement task: Conductivity, temperature Sensors (principle): 2 electrodes, coaxial 1 Jumper! 4 COND measuring module 2 Set jumper between F and G if only a 2-wire 5 Cable temperature detector is used! 3 Shield...
Page 235 Stratos Multi E401N Example 3, Cond Measurement task: Conductivity, temperature Sensors (example): 2-electrode sensor SE604, cable ZU0645 1 White 8 Red 2 Pink 9 Black, shield 3 Brown 10 COND measuring module 4 Gray 11 Cable 5 Blue 12 Sensors...
Page 236 Stratos Multi E401N Example 4, Cond Measurement task: Conductivity, temperature Sensors (example): 2-electrode sensor SE610 1 Jumper! 5 Yellow 2 Brown 6 COND measuring module 3 White 7 Fixed cable 4 Green 8 Sensors...
Page 237 Stratos Multi E401N Example 5, Cond Measurement task: Conductivity, temperature Sensors (example): 2-electrode sensor SE620 VP cable e.g., CA/VP6ST-003A 1 Coax core 7 Jumper! 2 Coax shield 8 Shield 3 Gray 9 COND measuring module 4 Blue 10 VP cable...
Page 238 Stratos Multi E401N Example 6, Cond Measurement task: Conductivity, temperature Sensors (example): 2-electrode sensor SE630 1 Brown 7 Pink 2 Yellow 8 Black, shield 3 Green 9 COND measuring module 4 White 10 Cable 5 Gray 11 Sensors 6 Red...
Page 239 Stratos Multi E401N Example 7, Cond Measurement task: Conductivity, temperature Sensors (example): 4-electrode stray-field sensor SE600/SE603 1 Gray 7 Yellow 2 Pink 8 Green 3 Blue 9 Shield yellow/green 4 Red 10 COND measuring module 5 Brown, do not connect...
Page 240: Inductive Conductivity Wiring Examples
Stratos Multi E401N 16.1.5 Inductive Conductivity Wiring Examples Example 1, Condl Measurement task: Inductive conductivity/temperature Sensors: SE655 or SE656 1 Core 7 Green 2 Shield 8 White 3 Coax red 9 Yellow 4 Shield 10 Shield green/yellow 5 Core 11 CondI measuring module...
Page 241 Stratos Multi E401N Example 2, Condl Measurement task: Conductivity, temperature Sensor: SE660 1 Core 7 Green 2 Shield 8 White 3 Coax red 9 Yellow 4 Shield 10 Shield green/yellow 5 Core 11 CondI measuring module 6 Coax black 12 Cable...
Page 242: Dual Conductivity Wiring Examples
Stratos Multi E401N 16.1.6 Dual Conductivity Wiring Examples Example 1, Dual Conductivity Measurement task: Dual conductivity, temperature Sensors A, B: 2x 2-electrode conductivity sensors 1 Module MK-CC065N 3 Sensors 2 2x cable...
Page 243 Stratos Multi E401N Example 2, Dual Conductivity Measurement task: Dual conductivity, temperature Sensors A, B: 2x SE604 2-electrode conductivity sensor 1 White/pink 5 Black 2 Brown/gray 6 Module MK-CC065N 3 Yellow/red 7 2x ZU0645 cable 4 Green 8 Sensors...
Page 244 Stratos Multi E401N Example 3, Dual Conductivity Measurement task: Dual conductivity, temperature Sensors A, B: 2x 2 electrode conductivity sensors SE610 1 White 5 Black 2 Brown 6 Module MK-CC065N 3 Yellow 7 2x cable 4 Green 8 Sensors...
Page 245: Oxygen Wiring Examples
Stratos Multi E401N 16.1.7 Oxygen Wiring Examples Standard Oxygen Wiring Example Measurement task: Oxygen (standard, amperometric) Sensors (example): e.g., SE706 Cable (example): CA/VP6ST-003A (ZU0313) 1 Core 5 Gray 2 Blue 6 Green 3 Jumper! 7 White 4 Shield 8 Outer shield...
Page 246 Stratos Multi E401N Trace Oxygen Measurement Wiring Example Measurement task: Trace oxygen measurement, TAN option FW‑E015 Sensors (example): Type “01” (e.g., SE707) Cable (example): CA/VP6ST-003A (ZU0313) 1 Core 5 Gray 2 Blue 6 Green 3 Jumper! 7 White 4 Shield...
Page 247 Stratos Multi E401N ISM Oxygen Wiring Example Channel II, requires TAN option FW-E053 “Digital ISM sensors” Measurement task: Oxygen (standard, amperometric) Sensors (example): InPro 6850i (Mettler-Toledo) Cable (example): AK9 (Mettler-Toledo) 1 Shield 4 Cable 2 Core 5 Sensor 3 Oxygen measuring module...
Page 248: Buffer Tables
Stratos Multi E401N 16.2 Buffer Tables Buffer Table, Knick CaliMat Nominal values highlighted. °C 2.01 4.05 7.09 9.24 12.58 2.01 4.04 7.07 9.16 12.39 2.01 4.02 7.04 9.11 12.26 2.00 4.01 7.02 9.05 12.13 2.00 4.00 7.00 9.00 12.00 2.00 4.01...
Page 249 Stratos Multi E401N Buffer Table, Merck/Riedel Nominal values highlighted. °C 2.01 4.05 7.13 9.24 12.58 2.01 4.04 7.07 9.16 12.41 2.01 4.02 7.05 9.11 12.26 2.00 4.01 7.02 9.05 12.10 2.00 4.00 7.00 9.00 12.00 2.00 4.01 6.98 8.95 11.88 2.00...
Page 250 Stratos Multi E401N Buffer Table, NIST Standard (DIN 19266: 2015-05) Nominal values highlighted. °C 1.666 4.000 6.984 9.464 1.668 3.998 6.951 9.395 13.207 1.670 3.997 6.923 9.332 13.003 1.672 3.998 6.900 9.276 12.810 1.675 4.000 6.881 9.225 12.627 1.679 4.005 6.865...
Page 251 Stratos Multi E401N Buffer Table Technical Buffer in Accordance with NIST Nominal values highlighted. °C 1.67 4.00 7.115 10.32 13.42 1.67 4.00 7.085 10.25 13.21 1.67 4.00 7.06 10.18 13.01 1.67 4.00 7.04 10.12 12.80 1.675 4.00 7.015 10.06 12.64 1.68...
Page 252 Stratos Multi E401N Buffer Table, Kraft Nominal values highlighted. °C 2.01 4.05 7.13 9.24 11.47 2.01 4.04 7.07 9.16 11.47 2.01 4.02 7.05 9.11 11.31 2.00 4.01 7.02 9.05 11.15 2.00 4.00 7.00 9.00 11.00 2.00 4.01 6.98 8.95 10.85 2.00...
Page 253 Stratos Multi E401N Buffer Table, Hamilton B Nominal values highlighted. °C 1.99 4.01 6.03 9.31 11.42 1.99 4.01 6.02 9.24 11.33 2.00 4.00 6.01 9.17 11.25 2.00 4.00 6.00 9.11 11.16 2.00 4.00 6.00 9.05 11.07 2.00 4.01 6.00 9.00 11.00...
Page 254 Stratos Multi E401N Buffer Table, Ciba (94) Nominal values: 2.06 4.00 7.00 10.00 °C 2.04 4.00 7.10 10.30 2.09 4.02 7.08 10.21 2.07 4.00 7.05 10.14 2.08 4.00 7.02 10.06 2.09 4.01 6.98 9.99 2.08 4.02 6.98 9.95 2.06 4.00 6.96...
Page 255 Stratos Multi E401N Buffer Table, Reagecon Nominal values highlighted. °C 2.01 4.01 7.07 9.18 12.54 2.01 4.01 7.07 9.18 12.54 2.01 4.00 7.07 9.18 12.54 2.01 4.00 7.04 9.12 12.36 2.01 4.00 7.02 9.06 12.17 2.00 4.00 7.00 9.00 12.00 1.99...
Page 256: Calibration Solutions
Stratos Multi E401N 16.3 Calibration Solutions Potassium Chloride Solutions (Conductivity in mS/cm) Temperature Concentration [˚C] 0.01 mol/l 0.1 mol/l 1 mol/l 0.776 7.15 65.41 0.896 8.22 74.14 1.020 9.33 83.19 1.147 10.48 92.52 1.173 10.72 94.41 1.199 10.95 96.31 1.225 11.19...
Page 257 Stratos Multi E401N Sodium Chloride Solutions (Conductivity in mS/cm) Temperature Concentration [˚C] 0.01 mol/l 0.1 mol/l 1 mol/l 0.631 5.786 134.5 0.651 5.965 138.6 0.671 6.145 142.7 0.692 6.327 146.9 0.712 6.510 151.2 0.733 6.695 155.5 0.754 6.881 159.9 0.775 7.068...
Page 258: Symbols And Markings On The Display
Stratos Multi E401N 16.4 Symbols and Markings on the Display Function check in accordance with NAMUR NE 107 Wrench icon on orange background The ”HOLD” NAMUR contact is active. Current outputs as configured: Currently measured value: The currently measured value appears at the current output.
Page 259 Stratos Multi E401N Designates the measuring channel for clear assignment of measured value/parameter displays in the case of identical process variables. Channel I: Memosens sensor/optical oxygen sensor SE740 (LDO) Channel II: Measuring module for analog sensor or second Memosens sensor...
Page 260: General Information
Stratos Multi E401N 17 General Information 17.1 Basics of PID Control Control is only possible in a closed control loop. The control loop is made up of individual compo- nents, which must be permanently ready for operation. The variable to be controlled (controlled vari- able) is continuously measured and compared with the specified setpoint.
Page 261: Typical Applications
Stratos Multi E401N PID Controller This controller contains the P, I, and D basic action of linear controllers. In the PID control system, the controlled variable corresponds to an addition of the output variables of a P, I, and D control system.
Page 262: Abbreviations
Stratos Multi E401N 18 Abbreviations Width across flats Cleaning in place Deutsches Institut für Normung (German Institute for Standardization) EEPROM Electrically Erasable Programmable Read-only Memory Electromagnetic compatibility European standard Electrostatic discharge Firmware HART Highway addressable remote transducer International Electrotechnical Commission...
Page 263 Stratos Multi E401N Notes...
Page 264 Knick Elektronische Messgeräte GmbH & Co. KG Beuckestraße 22 14163 Berlin Germany Phone: +49 30 80191-0 Fax: +49 30 80191-200 info@knick.de www.knick-international.com Translation of the original instructions Copyright 2024 • Subject to change Version 4 • This document was published on December 09, 2024.

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