Page 1 Stratos Multi E401N User Manual Industrial Transmitters µS 7.00 0.154 25.3 25.3 °C °C Menu Favorites Menu Read before installation. www.knick.de Keep for future use.
Page 2 Stratos Multi E401N Supplemental Directives These supplemental directives explain how safety information is laid out in this document and what content it covers. Safety Chapter This document's safety chapter is designed to give the reader a basic understanding of safety.
Page 3: Table Of Contents
Stratos Multi E401N Table of Contents 1 Safety............................. 1.1 Intended Use................................1.2 Symbols and Markings on the Product ......................1.3 Personnel Requirements............................ 1.4 Safety Training ............................... 1.5 Installation and Commissioning ........................1.6 Maintenance and Repair............................ 10 1.7 Residual Risks................................. 10 2 Product............................
Page 4 Stratos Multi E401N 5 Parameter Setting ........................41 5.1 Operating Levels..............................41 5.2 Locking a Function............................... 42 5.3 System Control ..............................43 5.3.1 Transfer Configuration .......................... 44 5.3.2 Parameter Sets ............................45 5.3.3 Function Control............................46 5.3.4 Calculation Blocks (TAN Option FW-E020) ..................46 5.3.5 Time/Date ..............................
Page 5 Stratos Multi E401N 5.11 Dual Conductivity Measurement........................89 5.12 Process Variable Oxygen............................ 89 5.12.1 Sensor Data ............................... 92 5.12.2 Calibration Presettings.......................... 95 5.12.3 Pressure Correction ..........................95 5.12.4 Salinity Correction ..........................96 5.12.5 Messages..............................96 5.13 Flow ................................... 97 5.14 HART Communication (TAN Option FW-E050) ..................97 6 Calibration/Adjustment .......................
Page 6 Stratos Multi E401N 7 Diagnostics ...........................128 7.1 Favorites Menu ..............................128 7.2 Diagnostic Functions ............................129 7.2.1 Overview of Diagnostic Functions....................129 7.2.2 Messages..............................129 7.2.3 Logbook ..............................129 7.2.4 Device Information..........................130 7.2.5 Device Test..............................131 7.2.6 Measuring Point Description ......................131 7.2.7 Channel I/II Diagnostic Functions .....................131 8 Maintenance ..........................133...
Page 7 Stratos Multi E401N 13 Annex ............................167 13.1 Channel II Wiring Examples ..........................168 13.1.1 pH Analog Wiring Examples........................168 13.1.2 ORP Analog Wiring Example .......................174 13.1.3 Contacting Conductivity Wiring Examples..................175 13.1.4 Inductive Conductivity Wiring Examples ..................182 13.1.5 Dual Conductivity Wiring Examples....................184 13.1.6 Oxygen Wiring Examples ........................187...
Page 8: Safety
The following safety instructions contain the necessary information for the safe use of the product. If you have any questions, please contact Knick Elektronische Messgeräte GmbH & Co. KG using the information provided on the back page of this document.
Page 9: Installation And Commissioning
Stratos Multi E401N 1.5 Installation and Commissioning Observe all applicable local and national codes and standards for the installation of electrical equipment. Information on installation is provided in the installation guide for the Stratos Multi. Cable Only use cables with a suitable temperature resistance.
Page 10: Maintenance And Repair
Please observe the following instructions: Knick Elektronische Messgeräte GmbH & Co. KG recommends that the Stratos Multi E401 is installed in a weather-proofed area of the plant or that a cover is used for protection against the weather.
Page 11: Product
Stratos Multi E401N 2 Product 2.1 Design and Function Stratos Multi is designed as follows: • The 1- and 2-channel transmitter permits a free combination of the pH/ORP process variables, conductivity (2-/4-electrode sensors, toroidal sensors), and oxygen, and can, for example, simultaneously measure pH values and conductivity.
Page 12: Product Range And Options
Stratos Multi E401N 2.2 Product Range and Options Version Possible combinations 1-channel (basic unit) 1x Memosens sensor 1x SE740 optical oxygen sensor 1x analog sensor via measuring module (MK module) 2-channel 2x Memosens sensors (1x via MK module) 1x Memosens sensor (MK module)
Page 13 Stratos Multi E401N Operation with Analog Sensors To enable operation with analog sensors, analog measuring modules are plugged in and must be configured during initial start-up. Operation with Optical Sensors The SE740 digital optical oxygen sensor can be directly connected to Stratos Multi.
Page 14: System Overview
Stratos Multi E401N 2.3 System Overview 1 Input for Memosens sensors or SE740 optical oxygen 6 Current output 1: 0/4 … 20 mA/HART active or sensor passive (TAN option FW-E050 HART: 4 … 20 mA) 2 Power output 3/15/24 V for SE740 optical oxygen...
Page 15: Typical Applications
Stratos Multi E401N 2.3.1 Typical Applications Memosens pH Measurement and PID Control MS pH Alarm Acid Brine PID control Alarm 24 V AC/DC Acid Brine...
Page 16 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 17: Package Contents And Product Identification
Stratos Multi E401N 2.4 Package Contents and Product Identification • Basic device Stratos Multi • Bag containing small accessory parts (2x plastic closure, 1x hinge pin, 1x washer, 2x insertable jumper, 1x reduction sealing insert, 1x multiple sealing insert, 2x blanking plug, 5x cable gland and hex nut M20x1.5) •...
Page 18: Nameplate
Stratos Multi E401N 2.4.1 Nameplate 1 Name of manufacturer 6 Protection class II 2 Product name 7 Power supply 3 CE marking 8 Manufacturer’s address with barcode 4 Special conditions: Read the user man- 9 Permissible ambient temperature, protection class...
Page 19 Stratos Multi E401N Selectable parameter sets (A/B). Indicates which parameter set is currently active when a control element for parameter set selection was selected:   Parameter Setting System Control Function Control A “closed” Data Card (memory card) is located in the device. The memory card can be removed.
Page 20: Commissioning
Stratos Multi E401N 3 Commissioning 3.1 Assembly Note: Use only a suitable Phillips head screwdriver to open the housing. Do not use sharp or pointed objects. Assembling the Housing Install the cable glands from the bag containing small accessory parts in the rear unit.
Page 21: Dimension Drawings
Stratos Multi E401N 3.1.1 Dimension Drawings Note: All dimensions are given 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] CAUTION! Ensure the suitable IP protection.
Page 22: Housing Mounting Options
Stratos Multi E401N 3.1.2 Housing Mounting Options Note: All dimensions are given in millimeters [inches]. Knockouts in the rear unit enable different mounting options: • Pipe mounting Pipe Mounting ZU0274, p. 23 ➜ • Panel mounting Panel-Mount Kit ZU0738, p. 25 ➜...
Page 23: Pipe Mounting Zu0274
Stratos Multi E401N 3.1.3 Pipe Mounting ZU0274 Note: All dimensions are given in millimeters [inches]. Ø 40 … 60 mm, □ 30 … 45 mm  40 [1.57] ...  60 [2.36] 1 For vertical or horizontal posts or pipes 3 Hose clamp with worm gear drive according to...
Page 24: Protective Hood For Wall And Pipe Mounting Zu0737
Stratos Multi E401N 3.1.4 Protective Hood for Wall and Pipe Mounting ZU0737 Note: All dimensions are given in millimeters [inches]. 146,9 [5.78] The protective hood can only be used for wall or pipe mounting. The package contents includes 4 M6 nuts for fastening the protective hood on the threaded rod of the...
Page 25: Panel-Mount Kit Zu0738
Stratos Multi E401N 3.1.5 Panel-Mount Kit ZU0738 Note: All dimensions are given in millimeters [inches]. Cutout 138 mm x 138 mm (DIN 43700) < 30 [1.181] 76 [2.992] 1 [0.039] ... 22 [0.866] 41 [1.614] 1 Position of panel 4 Span piece, 4x...
Page 26: Blanking Plugs, Reduction Sealing Inserts, Multiple Sealing Inserts
Stratos Multi E401N 3.1.6 Blanking Plugs, Reduction Sealing Inserts, Multiple Sealing Inserts As delivered, each cable gland includes a standard sealing insert. Reduction and multiple sealing in- serts are available for tight insertion of one or two thinner cables. The coupling can be tightly sealed using a blanking plug.
Page 27: Electrical Installation
Stratos Multi E401N 3.2 Electrical Installation WARNING! The transmitter does not have a power switch. An appropriately arranged and acces- sible disconnecting device for the transmitter must be present in the system installation. The discon- necting device must disconnect all non-grounded, current-carrying wires and be labeled such that the associated transmitter can be identified.
Page 28 Stratos Multi E401N Typical AC Application with Inductive Load 1 Load 3 Contact 2 Typical RC combination, e.g., capacitor 0.1 μF, resistor 100 Ω/1 W Typical DC Application with Inductive Load 1 Inductive load 3 Contact 2 Free-wheeling diode, e.g.,1N4007 (observe polarity) Typical AC/DC Application with Capacitive Load...
Page 29: Installing Active And Passive Current Outputs
Stratos Multi E401N 3.2.2 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: Terminal Assignments
Stratos Multi E401N 3.2.3 Terminal Assignments The terminals are suitable for single or stranded wires up to 2.5 mm Terminal Connection BN = brown cable Sensor (Memosens or other digital sensors) RS485 A GN = green cable RS485 B YE = yellow cable...
Page 31: Sensor Connection
Stratos Multi E401N 3.3 Sensor Connection 3.3.1 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 Standard sensor connection for digital sensors (Memosens sensor/LDO SE740 sensor)
Page 32: Connecting An Analog Sensor/Second Memosens Channel
Stratos Multi E401N 3.3.2 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 wiring the inputs. Note: Strip the insulation from the wires using a suitable tool to prevent damage. Only use cables that are rated for use at 75 °C / 167 °F or higher.
Page 33: Cable Preparation For Se655/Se656
Stratos Multi E401N Measuring Module for Connection of 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 in the module slot and connect it up (see above).
Page 34: Terminal Assignments Of Measuring Modules
Stratos Multi E401N 3.4 Terminal Assignments of Measuring Modules Installation of the measuring modules Connecting an Analog Sensor/Second Memosens Channel, p. 32 ➜ The module plate is attached to the measuring module underneath the module cover on the rear of the device.
Page 35: Final Check During Commissioning
Stratos Multi E401N Module for Dual Conductivity Measurement Order code MK-CC065N Memosens Module Order code MK-MS095N 3.5 Final Check During Commissioning Only commission the Stratos Multi if all the questions below can be answered “yes”: • Are the Stratos Multi and all its cables externally intact and strain-relieved? •...
Page 36: Operation And Use
Stratos Multi E401N 4 Operation and Use 4.1 Changing the User Interface Language Preconditions • Stratos Multi is connected to the power. Measuring mode is shown on the display. Steps Press the Left softkey: Menu. The menu selection opens. Press the Right softkey: Lingua. Press the right arrow key and set the language of the user inter- face.
Page 37 Stratos Multi E401N Sensor Monitoring Details (Admin.) Slope Zero Point ORP Offset Sensocheck Ref El Sensocheck Glass El Response Time Back Back to Meas. 1 Function check (HOLD) 7 Softkey function display 2 Current menu heading 8 Softkey function display...
Page 38 Stratos Multi E401N Keypad 1 Left softkey: 4 enter: Function as shown on left function display Open menu, confirm inputs 2 Left/right arrow keys: 5 Right softkey: Menu selection: prior/next menu, move left/ Function as shown on right function display...
Page 39: Menu Structure Overview
Stratos Multi E401N 4.3 Menu Structure Overview Menu Calibration Maintenance Parameter Setting Diagnostics Measuring Passcode: 1147 2958 1246 Operator Level (factory 1989 Administrator Level setting) Submenus: Calibration mode, Maintenance of calibration points, sensors and current buffer set outputs System control (time, firmware update, options,...
Page 40: Operating States
Stratos Multi E401N 4.5 Operating States While the parameters are being set, Stratos Multi is in the function check (HOLD) mode. The current output and relay contacts behave in accordance with the parameter settings. In the function check (HOLD) mode, measurement is not permitted since unexpected system behavior might put users at risk.
Page 41: Parameter Setting
Stratos Multi E401N 5 Parameter Setting CAUTION! Incorrect parameter settings, calibration, and adjustments can result in incorrect outputs. For this reason, Stratos Multi must be commissioned by a specialist, who will also set the parameters, calibrate and adjust the device.
Page 42: Locking A Function
Stratos Multi E401N 5.2 Locking a Function Example: Locking access to the configuration of relay contact K1 from the Operator level Open Parameter Setting. Select Administrator level. Enter passcode (factory setting: 1989). Select submenu:   Inputs and Outputs Relay Contacts Contact K1 Relay Contacts (Admin.)
Page 43: System Control
Stratos Multi E401N 5.3 System Control Submenus Description Memory Card This option is shown if a Data Card is inserted: Settings for logbook and measurement recorder data recording. Decimal separation can be set. The memory card can be formatted. Transfer Configuration If a Data Card is inserted, the measuring device’s configuration can be saved and...
Page 44: Transfer Configuration
Stratos Multi E401N 5.3.1 Transfer Configuration All device settings can be saved on a memory card (Data Card):   Parameter Setting System Control Transfer Configuration Note: The inserted Data Card is shown on the display. • Select to write all the device settings (except passcodes) to the Data Card.
Page 45: Parameter Sets
Stratos Multi E401N 5.3.2 Parameter Sets Stratos Multi provides two complete selectable parameter sets (A/B) for different process connections or process conditions. The currently activated parameter set can be signaled by a relay contact. Relay Contacts, p. ➜ Parameter set “B“ only permits setting of process-related parameters.
Page 46: Function Control
Stratos Multi E401N 5.3.3 Function Control The following functions can be activated by softkey or optocoupler input OK1: Input OK1: • Parameter set selection • Flow • Function check • Function check (channel) Right softkey: • Off • Value rotation •...
Page 47: Option Activation
Stratos Multi E401N 5.3.8 Option Activation Add-on functions (TAN options) expand the device’s capabilities. The TAN options are device-specific. When ordering a TAN option, you must therefore specify the serial number of the device in addition to the relevant order code for this function. The manufacturer then supplies a TAN (transaction number) to activate the add-on function.
Page 48: Concentration Table (Tan Option Fw-E009)
Note: If you lose the administrator passcode, 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 49: Configuring The Measurement Display
Stratos Multi E401N 5.4.1 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 50 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 Meas. Value 2 Values 2nd Meas.
Page 51 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 Meas. Value 2 Values 2nd Meas.
Page 52 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 53 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 Meas. Value 2 Values 2nd Meas.
Page 54: Display
Stratos Multi E401N Selection Result Channel 1 Memosens pH/ORP pH Value pH Value 1st Meas. Value Conductivity pH Value Temperature pH Voltage 2nd Meas. Value pH Voltage Salinity Channel 2 Analog Cond Resistivity Conductivity 1st Meas. Value Conductivity Conductance 4.00 1.135 mS/cm...
Page 55: Current Outputs
Stratos Multi E401N 5.5.1 Current Outputs The current outputs are deactivated ex works. Current outputs 3 and 4 need to be activated by TAN (TAN option FW-E052). Adjustable parameters for the current outputs Usage On, Off Process Variable Selection from all available process variables Current Range 4 …...
Page 56 Stratos Multi E401N Characteristic Curves Linear Characteristic The process variable is represented by a linear output current curve. Output 4 … 20 mA, span pH 0 … 14 Output 4 … 20 mA, span pH 5 … 9 Start Start Trilinear/Bilinear Curve Requires the input of two additional vertex points.
Page 57: Relay Contacts
Stratos Multi E401N Output Filter Time Interval To smooth the current output, a low-pass filter with adjustable time interval can be switched on. When there is a jump at the input (100 %), the output level is at 63 % after the time interval has been reached.
Page 58 Stratos Multi E401N Usage: Failure Open  Inputs and Outputs Relay Contacts Select the desired contact with the up/down arrow keys and enter. Usage: Failure Set the contact parameters. Failure is active • if a value has exceeded or fallen below “Failure Limit Hi“ or “Failure Limit Lo“ respectively •...
Page 59 Stratos Multi E401N Usage: Function Check Open  Inputs and Outputs Relay Contacts Select the desired contact with the up/down arrow keys and enter. Usage: Function Check Set the contact parameters. Function check (HOLD) is active: • during calibration (only the corresponding channel) •...
Page 60 Stratos Multi E401N Usage: Rinse Contact Please note when configuring the “Rinse Contact” function • The “function check” (HOLD) mode (e.g. during parameter setting) delays the execution of the “rinse contact” function. • Up to 3 rinse functions (contacts K1 ... K3) can be configured independently of each other.
Page 61: Pid Controller
Stratos Multi E401N 5.5.3 PID Controller The PID controller can be configured as a pulse length or pulse frequency controller. Controller Type Pulse length or pulse frequency controller; see below. Controlled Variable Depending on the connected sensors. Setpoint and Input of setpoint and neutral zone in percent of the respective controller variable.
Page 62: Control Inputs
Stratos Multi E401N Pulse Frequency Controller The pulse frequency controller is used to control a frequency-controlled actuator (metering pump). It varies the frequency with which the contacts are switched on. The maximum pulse frequency [Imp/ min] can be configured, and is dependent on the actuator. The ON time is constant. It is automatically calculated from the configured maximum pulse frequency.
Page 63: Sensor Selection [I] [Ii]
Stratos Multi E401N 5.6 Sensor Selection [I] [II] Note: Function check (HOLD) is active. Stratos Multi is factory-set to a pH value measurement with Memosens sensor. This measuring func- tion is also provided by the ORP measurement. The measuring function can be changed to measure...
Page 64: Process Variable Ph
Stratos Multi E401N 5.7 Process Variable pH 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 65 Stratos Multi E401N Selecting an Analog pH Sensor   Parameter Setting Sensor Selection [I] [II] Sensor Selection [II] Selection of a pH or pH/ORP sensor connected to the MK-MS 015N measuring module: Module: MK-PH Mode: Analog Adjustable parameters for analog sensors ...
Page 66: Sensor Data
Stratos Multi E401N 5.7.1 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 67 Stratos Multi E401N Adjusting Sensor Monitoring Open  Sensor Data Sensor Monitoring Details Open a sensor parameter, e.g., Slope Set Monitoring of the slope to automatic or individual. If you select “Individual”: The nominal slope and the min/max limits can be entered.
Page 68: Calibration Presettings
Stratos Multi E401N CIP/SIP Counters Note: CIP/SIP counters are available for the following pH sensor types: SIP counter: Memosens pH, Memosens pH/ORP; CIP counter: Memosens pH/ORP CIP/SIP cycles are used to clean or sterilize process-wetted parts in the process. Depending on the ap- plication, either one chemical (alkaline solution, water) or several chemicals (alkaline solution, water, acidic solution, water) are used.
Page 69: Temperature Compensation Of Process Medium
Stratos Multi E401N Note: If Sensoface is enabled, a neutral smiley is displayed once 80 % of the interval has expired. Once the entire interval has expired, a sad smiley is shown, a maintenance required message is generated, and the corresponding NAMUR icon is displayed.
Page 70: Delta Function
Stratos Multi E401N Table When using process media with a known pH value temperature response, the pH output value can be corrected using a table. The percentage deviation from the measured value in % can be entered for temperatures between 0 and 95 °C in steps of 5 °C. The pH output value is then corrected by the corresponding percentage deviation from the measured value in %, depending on the measuring temperature.
Page 71: Messages
Stratos Multi E401N 5.7.5 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 72: Process Variable Orp
Stratos Multi E401N 5.8 Process Variable ORP 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 ORP Sensor   Parameter Setting...
Page 73: Sensor Data
Stratos Multi E401N 5.8.1 Sensor Data Memosens sensors provide relevant sensor data automatically. Sensoface The Sensoface icons provide the user with diagnostic information on wear and required maintenance of the sensor. In measuring mode, an icon (happy, neutral, or sad smiley) is shown on the display to re- flect the continuous monitoring of the sensor parameters.
Page 74: Calibration Presettings
Stratos Multi E401N Note: If measurements are generally taken at high temperatures (> 55 °C/131 °F), the counters should be switched off. When a CIP/SIP counter is switched on, a maximum number of cycles can be entered. As soon as the counter has reached the specified value, a maintenance required message is triggered and the NAMUR icon is displayed.
Page 75: Messages
Stratos Multi E401N 5.8.4 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 Configuring Messages Process variable limits for the monitoring range can be selected in the...
Page 76: Process Variable Conductivity (Contacting)
Stratos Multi E401N 5.9 Process Variable Conductivity (Contacting) 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 77: Sensor Data
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 Analog 2-channel conductivity measurement with the MK-CC065 measuring module Dual Conductivity Measurement, p.
Page 78 Stratos Multi E401N Sensoface The Sensoface icons provide the user with diagnostic information on wear and required maintenance of the sensor. In measuring mode, an icon (happy, neutral, or sad smiley) is shown on the display to reflect the continuous monitoring of the sensor parameters.
Page 79: Calibration Presettings
Stratos Multi E401N CIP/SIP Counters Note: This function is not available for all sensor types. CIP/SIP cycles are used to clean or sterilize process-wetted parts in the process. Depending on the ap- plication, either one chemical (alkaline solution, water) or several chemicals (alkaline solution, water, acidic solution, water) are used.
Page 80: Temperature Compensation Of Process Medium
Stratos Multi E401N 5.9.3 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 are available for temperature compensation: • Off • Linear (enter temperature coefficient TC) •...
Page 81: Usp Function
Stratos Multi E401N 5.9.5 USP Function Monitoring Ultrapure Water in the Pharmaceutical Industry The conductivity of ultrapure water in the pharmaceutical industry can be monitored online in accordance with the guideline “USP” (U.S. Pharmacopeia), Annex 5, Section 645 “Water Conductivity”.
Page 82: Messages
Stratos Multi E401N 5.9.6 Messages All values determined by the measuring module or sensor can generate messages. Messages can be configured for the following process variables: • Conductivity • Resistivity • Concentration (with TAN option FW-E009) • Temperature • Salinity...
Page 83: Process Variable Conductivity (Inductive)
Stratos Multi E401N 5.10 Process Variable Conductivity (Inductive) 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 84 Stratos Multi E401N Adjustable parameters for digital or Memosens sensors for toroidal conductivity  Parameter Setting [I] [II] Digital/Memosens CondI Cal Presettings Presetting of calibration mode with corresponding parameters. Calibration Presettings, p. 86 ➜ TC Process Medium Temperature compensation of process medium.
Page 85: 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 the user with diagnostic information on wear and required maintenance of the sensor.
Page 86: Calibration Presettings
Stratos Multi E401N In the Message menu item, select whether and how an exceeded limit is to be displayed: No message. Failure A failure message is shown in off-limit conditions; the corresponding NAMUR icon is displayed. Maintenance A maintenance required message is shown in off-limit conditions; the corresponding NAMUR icon is displayed.
Page 87: Concentration (Tan Option Fw-E009)
Stratos Multi E401N Cal Presettings (Admin.) Calibration Mode Product Automatic Manual Conductivity Product Calibration Product Conductivity Zero Point Data Entry Back Calibration presettings can be changed in the submenu: Cal Presettings   Parameter Setting [I] [II] … Condl Cal Presettings 5.10.3 Concentration (TAN Option FW-E009)
Page 88: Messages
Stratos Multi E401N 5.10.5 Messages All values determined by the measuring module or sensor can generate messages. Messages can be configured for the following process variables: • Conductivity • Resistivity • Concentration (with TAN option FW-E009) • Temperature • Salinity...
Page 89: Dual Conductivity Measurement
Stratos Multi E401N 5.11 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 90 Stratos Multi E401N Selecting a Second Memosens Oxygen Sensor   Parameter Setting Sensor Selection [I] [II] Sensor Selection [II] Selection of a second Memosens oxygen sensor connected to the MK-MS 095N measuring module: Module: MK-MS Parameter: Oxygen Mode: Memosens...
Page 91 Stratos Multi E401N  Adjustable parameters for the SE740 optical oxygen sensor Parameter Setting [I] Digital Oxy Cal Presettings Presetting of the calibration mode and calibration timer. Calibration Presettings, p. 95 ➜ Pressure Correction Manual input of pressure during measurement and calibration.
Page 92: Sensor Data
Stratos Multi E401N 5.12.1 Sensor Data Display Example for an Analog Oxygen Sensor Sensor Data (Admin.) Measure in Liquids Liquids Gases Sensor Type Standard Temperature Probe NTC 22kΩ Sensor Polarization Auto Polariz. During Meas -675 mV Polariz. During Cal -675 mV Back Select whether to measure in liquids or gases.
Page 93 Stratos Multi E401N Adjusting Sensor Monitoring Open  Sensor Data Sensor Monitoring Details Open a sensor parameter, e.g., Slope Set Monitoring of the slope to automatic or individual. If you select “Individual”: The nominal slope and the min/max limits can be entered.
Page 94 Stratos Multi E401N Measurement with CIP/SIP When using the SE740 optical oxygen sensor, the temperature can be monitored during the CIP/SIP process. When the preset cut-off temperature is exceeded, the sensor automatically stops the oxygen measurement to extend the life of the membrane. The measured oxygen value is frozen, the temperature continues to be measured.
Page 95: Calibration Presettings
Stratos Multi E401N 5.12.2 Calibration Presettings The calibration presettings can be defined in the parameter settings or adjusted directly in the Calibration menu prior to the calibration. Calibration mode: Presetting of calibration mode, e.g., in air, in water, data entry, product calibration, zero calibration, temperature If you select “Product Calibration”...
Page 96: Salinity Correction
Stratos Multi E401N 5.12.4 Salinity Correction The solubility of oxygen in water depends on its salinity. The correction is made by either directly entering the salinity in g/kg, the chlorinity in g/kg, or the conductivity in μS/cm, and the temperature.
Page 97: Flow
Stratos Multi E401N 5.13 Flow Stratos Multi can calculate flow for limit messages or to monitor an ion exchanger. A pulse generator is connected to control input OK1 for this purpose. Parameter Setting Control input OK1 must first be assigned the “Flow” function.
Page 98: Calibration/Adjustment
Stratos Multi E401N 6 Calibration/Adjustment Menu Selection Calibration Back Lingua Note: During calibration, the function check (HOLD) operating state is active for each of the calibrated measuring channels. The outputs respond as configured. During calibration, Stratos Multi remains in calibration mode until stopped by personnel. When cali- bration mode is exited, a confirmation prompt is displayed to ensure that the system is ready for oper- ation again.
Page 99: Process Variable Ph Calibration/Adjustment
Stratos Multi E401N 6.2 Process Variable pH Calibration/Adjustment Note: During calibration, the function check (HOLD) operating state is active for each of the calibrated measuring channels. The outputs respond as configured. • Calibration: Detect deviations without readjustment of calibration data •...
Page 100: Calibration Methods
Stratos Multi E401N 6.2.1 Calibration Methods 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 negligible significance.
Page 101: Temperature Compensation During Calibration
6.2.4 Calibration Mode: Calimatic Calibration with Automatic Buffer Recognition During automatic calibration with Knick Calimatic, the sensor is immersed in one, two, or three buffer solutions. On the basis of the sensor voltage and the measured temperature, Stratos Multi automati- cally detects the nominal buffer value.
Page 102 Stratos Multi E401N Start calibration with the right softkey: Next. ✓ Calibration with first buffer is carried out. The following parameters are displayed: Sensor voltage, calibration temperature, nominal buffer value, and response time. 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 103: Calibration Mode: Manual
Stratos Multi E401N 6.2.5 Calibration Mode: Manual During calibration with manual entry of buffer values, the sensor is immersed in one, two, or three buffer solutions. Stratos Multi displays the measured temperature. The temperature-corrected buffer values must then be manually entered. For this purpose, take the buffer value that goes with the displayed temperature from the buffer table (e.g.
Page 104: Calibration Mode: Product
Stratos Multi E401N 6.2.6 Calibration Mode: Product Calibration by Sampling If the sensor cannot be removed – e.g., for sterility reasons – its zero point can be calibrated by “sam- pling”. The currently measured value of the process is saved in the device for this purpose. A sample is taken directly afterward at the measuring point.
Page 105: Calibration Mode: Data Entry
Stratos Multi E401N 6.2.7 Calibration Mode: Data Entry Calibration by entering the calibration values for the zero point and the slope of a premeasured sensor. Calibration Procedure  Calibration [I] [II] … pH When you access calibration, the calibration values selected in the calibration presettings are used.
Page 106: Calibration Mode: Temperature
Stratos Multi E401N 6.2.9 Calibration Mode: Temperature Adjustment of Temperature Probe This function is used to adjust the individual temperature probe tolerances or cable lengths for the purpose of increasing the accuracy of the temperature measurement. The adjustment requires an accurate measurement of the process temperature using a calibrated reference thermometer.
Page 107: Process Variable Orp Calibration/Adjustment
Stratos Multi E401N 6.3 Process Variable ORP Calibration/Adjustment Note: During calibration, the function check (HOLD) operating state is active for each of the calibrated measuring channels. The outputs respond as configured. • Calibration: Detect deviations without readjustment of calibration data •...
Page 108 Stratos Multi E401N Immerse the sensor in the ORP buffer solution and wait for the ORP measured value to stabilize. Start calibration with the right softkey: Next. ✓ When the drift check is complete, the measured temperature and ORP are displayed.
Page 109: Calibration Mode: Orp Check
Stratos Multi E401N 6.3.3 Calibration Mode: ORP Check The sensor is immersed in a solution with a known ORP value for the ORP check. The test period and the permissible test difference are specified during parameter setting:   Parameter Setting...
Page 110: Process Variable Conductivity (Contacting) Calibration/Adjustment
Stratos Multi E401N 6.4 Process Variable Conductivity (Contacting) Calibration/Adjustment Note: During calibration, the function check (HOLD) operating state is active for each of the calibrated measuring channels. The outputs respond as configured. • Calibration: Detect deviations without readjustment of calibration data •...
Page 111: Calibration/Adjustment Methods
Stratos Multi E401N 6.4.2 Calibration/Adjustment Methods • 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 probe adjustment 6.4.3 Calibration Mode: Automatic...
Page 112: Calibration Mode: Manual
Stratos Multi E401N 6.4.4 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 113: Calibration Mode: Product
Stratos Multi E401N 6.4.5 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 of the process from Stratos Multi is stored for this purpose.
Page 114: Calibration Mode: Data Entry
Stratos Multi E401N 6.4.6 Calibration Mode: Data Entry Entry of values for the cell constant of a sensor, related to 25 °C/77 °F. Calibration Procedure  Calibration [I] [II] … Cond When you access calibration, the calibration values selected in the calibration presettings are used.
Page 115: Process Variable Conductivity (Inductive) Calibration/Adjustment
Stratos Multi E401N 6.5 Process Variable Conductivity (Inductive) Calibration/Adjustment Note: During calibration, the function check (HOLD) operating state is active for each of the calibrated measuring channels. The outputs respond as configured. • Calibration: Detect deviations without readjustment of calibration data •...
Page 116: Calibration/Adjustment Methods
Stratos Multi E401N 6.5.2 Calibration/Adjustment Methods • 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 117: Calibration Mode: Manual
Stratos Multi E401N 6.5.4 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 118: Calibration Mode: Product
Stratos Multi E401N 6.5.5 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 of the process from Stratos Multi is stored for this purpose. Right after this, take a sample from the process.
Page 119: Calibration Mode: Zero Point
Stratos Multi E401N 6.5.6 Calibration Mode: Zero Point Zero point correction Calibration Procedure  Calibration [I] [II] … Condl When you access calibration, the calibration values selected in the calibration presettings are used. These settings can still be changed in the Calibration menu. If you do not want to perform calibration, use the left softkey to go back one level and abort the calibration.
Page 120: Calibration Mode: Data Entry
Stratos Multi E401N 6.5.8 Calibration Mode: Data Entry Entry of values for the cell factor and zero point of a sensor, related to 25 °C/77 °F. If concentration measurement is activated (TAN option FW-E009), the concentration is also shown in this menu and directly adjusted with the cell factor. This makes direct calibration to the concentration value possible.
Page 121: Process Variable Oxygen Calibration/Adjustment
Stratos Multi E401N 6.6 Process Variable Oxygen Calibration/Adjustment Note: During calibration, the function check (HOLD) operating state is active for each of the calibrated measuring channels. The outputs respond as configured. • Calibration: Detect deviations without readjustment of calibration data •...
Page 122: Calibration/Adjustment Methods
Stratos Multi E401N 6.6.1 Calibration/Adjustment Methods • 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 probe adjustment 6.6.2 Calibration Mode: In Air...
Page 123: Calibration Mode: In Water
Stratos Multi E401N 6.6.3 Calibration Mode: In Water Automatic Calibration in Water The slope is corrected using the saturation value (100 %) related to saturation with air. Calibration Procedure Note: Ensure sufficient sensor incident flow. (see the specifications of the oxygen sensor.) The calibration medium must be in equilibrium with air.
Page 124: Calibration Mode: Data Entry
Stratos Multi E401N 6.6.4 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 ...
Page 125: Calibration Mode: Product
Stratos Multi E401N 6.6.5 Calibration Mode: Product Calibration by Sampling If the sensor cannot be removed – e.g., for sterility reasons – its slope can be determined by “sampling”. The current “Saturation” measured value is saved in the device for this purpose. A sample is taken directly afterward at the measuring point.
Page 126: Calibration Mode: Zero Point
Stratos Multi E401N 6.6.6 Calibration Mode: Zero Point Zero Correction For trace measurements below 500 ppb, the zero point should be calibrated. (TAN option FW-E015, “Oxygen Measurement in Low Oxygen Concentrations”) If a zero correction is performed, the sensor should remain for at least 10 to 60 minutes in the calibration medium (media containing CO : at least 120 min) to obtain stable, non-drifting values.
Page 127: Calibration Mode: Temperature
Stratos Multi E401N 6.6.7 Calibration Mode: Temperature Adjustment of Temperature Probe This function is used to adjust the individual temperature probe tolerances or cable lengths for the purpose of increasing the accuracy of the temperature measurement. The adjustment requires an accurate measurement of the process temperature using a calibrated reference thermometer.
Page 128: Diagnostics
Stratos Multi E401N 7 Diagnostics 7.1 Favorites Menu Diagnostic functions can be accessed directly from measuring mode using the right softkey. For this purpose, the right softkey must be assigned the function Favorites Menu:   Parameter Setting System Control Function Control µS...
Page 129: Diagnostic Functions
Stratos Multi E401N 7.2 Diagnostic Functions The diagnostic functions are matched to NAMUR recommendation NE 107. 7.2.1 Overview of Diagnostic Functions In diagnostics mode, you can access the following submenus without interrupting the measurement: Submenus Description Message List Displays currently active messages in plain text.
Page 130: Device Information
Stratos Multi E401N Access in:  Diagnostics Logbook Logbook F240 12/11/19 08:33 Cal Mode is Active F240 12/11/19 08:21 Cal Mode is Active F032 12/11/19 08:13 Sensor Identified F029 12/11/19 08:13 No Sensor Connected F029 12/11/19 08:05 No Sensor Connected...
Page 131: Device Test
Stratos Multi E401N 7.2.5 Device Test Device Diagnostics Stratos Multi E401 periodically performs a self-test in the background. The results can be viewed in   Diagnostics Device Test Device Diagnostics If a memory card is inserted, the card type and available memory are also displayed.
Page 132 Stratos Multi E401N Sensor Diagram Note: Function active for pH and oxygen sensors The sensor diagram clearly indicates the status of the parameters in the connected sensor, including the calibration timer. Inactive parameters are shown in gray and set to 100 % (e.g. disabled calibration timer).
Page 133: Maintenance
Stratos Multi E401N 8 Maintenance Menu Selection Maintenance Back Lingua Note: Function check (HOLD) is active. The current output 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 134: Channel I/Ii Maintenance Functions
Stratos Multi E401N 8.2 Channel I/II Maintenance Functions 8.2.1 Sensor Monitor   Maintenance [I] [II] Sensor Sensor Monitor Display of the currently measured values (sensor monitor) with function check (HOLD mode activated) enabled: Since the instrument is in function check (HOLD) mode, certain media can be used to validate the sensor and check the measured values without affecting the signal outputs.
Page 135: Decommissioning
The local codes and regulations must be observed when disposing of the product. 9.2 Returns If required, send the Stratos Multi E401 in a clean condition and securely packed to Knick Elektronische Messgeräte GmbH & Co. KG. If the Stratos Multi E401 has been in contact with hazardous substances, it must be decontaminated/ disinfected prior to being shipped.
Page 136: Troubleshooting
Stratos Multi E401N 10 Troubleshooting 10.1 Malfunction States Messages and errors are displayed with the corresponding NAMUR icon and the measurement display of the corresponding channel changes color. The message is logged, with time and date, in the logbook. Logbook, p. 129 ➜...
Page 137: Error Messages
Stratos Multi E401N 10.2 Error Messages Error type Failure Maintenance Required Out of Specification Info Info text, appears directly in the relevant menu User-defined error type: failure or maintenance required General Error Messages Error Notes/solution Display is blank Press any key to wake the display following a possible auto-off.
Page 138 Stratos Multi E401N Error no. Type Message text Notes/solution F212 Time/Date The time and date still need to be set.   Parameter Setting System Control Time/Date F229 Info Wrong Passcode An incorrect passcode was entered. Passcode Entry, p. 48 ➜...
Page 139 Stratos Multi E401N pH, ORP Error no. Type Message text Notes/solution P001 Configuration Data Data error in the configuration: Loss Fully reconfigure the device. P008 Adjustment Data Error in the adjustment data: Switch device off (approx. 10 s). If the message persists, send in the device.
Page 140 Stratos Multi E401N Error no. Type Message text Notes/solution P049 pH Voltage HI_HI Value above configured monitoring limit P060 Sensoface: Slope Incorrect adjustment or worn/faulty sensor: Calibrate/adjust sensor, check for correct buffer solutions and temperature. Replace the sensor as required.
Page 141 Stratos Multi E401N Error no. Type Message text Notes/solution P124 Sensor Date The date of the sensor is implausible. e.g., calibration data “from the future”: Check and, as necessary, adjust the configuration. P201 Cal: Temperature The calibration temperature is impermissible: Check the calibration temper- ature.
Page 142 Stratos Multi E401N Error no. Type Message text Notes/solution A023 ORP Diff HI Value above configured monitoring limit A024 ORP Diff HI_HI Value above configured monitoring limit A045 pH voltage diff range pH voltage difference. Max/min device limits exceeded: - Check both pH voltage values.
Page 143 Stratos Multi E401N Error no. Type Message text Notes/solution C022 Resistivity LO Value below configured monitoring limit C023 Resistivity HI Value above configured monitoring limit C024 Resistivity HI_HI Failure: Value above configured monitoring limit C025 Concentration Range Measuring range exceeded. Possible causes: Sensor not/incorrectly connected, cable incorrectly connected/faulty, range incorrectly specified, incorrect cell constant set.
Page 144 Stratos Multi E401N Error no. Type Message text Notes/solution C123 New Sensor, A new digital sensor was connected. It must now be adjusted. Adjustment Required C124 Sensor Date The date of the sensor is implausible.e.g., calibration data “from the future”: Check and, as necessary, adjust the configuration.
Page 145 Stratos Multi E401N Error no. Type Message text Notes/solution E036 PASSAGE LO_LO Value below configured monitoring limit E037 PASSAGE LO Value below configured monitoring limit E038 PASSAGE HI Value above configured monitoring limit E039 PASSAGE HI_HI Value above configured monitoring limit...
Page 146 Stratos Multi E401N Conductivity (Inductive) Error no. Type Message text Notes/solution T001 Configuration Data Data error in the configuration: Loss Fully reconfigure the device. T008 Adjustment Data Error in the adjustment data: Switch device off (approx. 10 s). If the message persists, send in the device.
Page 147 Stratos Multi E401N Error no. Type Message text Notes/solution T040 Salinity Range Measuring range exceeded. Possible causes: Sensor not/incorrectly connected, cable incorrectly connected/faulty, range incorrectly specified, incorrect cell factor set.   Parameter Setting [II] Analog Condl Sensor Data T041...
Page 148 Stratos Multi E401N Error no. Type Message text Notes/solution T205 Info Cal: Sensor Unstable The drift criterion was not adhered to during calibration. Possible causes: improper calibration, sensor cable/connection faulty, sensor worn. Check the sensor and calibration and repeat as required. Otherwise, replace the sensor.
Page 149 Stratos Multi E401N Error no. Type Message text Notes/solution D061 Neutral Sensoface - Readjust sensor. - Check/refill electrolyte. - SE740: Replace membrane cap. Zero Point - Replace sensor. D062 - Readjust configured sensor. Sad Sensoface - Replace sensor. Sensocheck D063 - Check/refill electrolyte.
Page 150 Stratos Multi E401N Error no. Type Message text Notes/solution D201 Cal: Temperature The calibration temperature is impermissible: Check the calibration temper- ature. Note the information in the Calibration chapter. Process Variable Oxygen Calibration/Adjustment, p. 121 ➜ D205 Info Cal: Sensor Unstable The drift criterion was not adhered to during calibration.
Page 151: Sensocheck And Sensoface
Stratos Multi E401N Error no. Type Message text Notes/solution H049 Saturation %O2 Diff Value above configured monitoring limit HI_HI H090 Conc. (Gas) Diff Range Concentration value difference. Max/min device limits exceeded: - Check both concentration values. - Check sensor/cable connections.
Page 152 Stratos Multi E401N Sensoface messages can be assigned to a relay contact:     Parameter Setting Inputs and Outputs Relay Contacts Contact K… Usage If you select , all Sensoface messages are output via the selected contact. Sensoface...
Page 153: Accessories
Stratos Multi E401N 11 Accessories 11.1 Memory Card Memory cards are used to save data or implement a firmware adjustment. The device’s measurement, configuration, and firmware can be saved. Settings can be changed in the System Control   ...
Page 154 Stratos Multi E401N Connection to PC Connect the memory card to the computer via a micro USB cable. 1 Micro USB port 2 System connection Stratos Multi Memory Card Types and Icons Symbol Card type Purpose (original accessory) Data Card Data recording (e.g.
Page 155: Specifications
Stratos Multi E401N 12 Specifications 12.1 Power Power supply, 80 V (- 15 %) ... 230 (+ 10 %) V AC; approx. 15 VA; 45 … 65 Hz terminals 17, 18 24 V (- 15 %) … 60 (+ 10 %) V DC; 10 W Overvoltage category II, protection 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 156 Stratos Multi E401N 0/4 … 20 mA, floating, galvanically connected to output 2, load resistance up to Output 3, 4, Out 3, Out 4 250 Ω TAN option FW-E052 Failure message 3.6 mA (with 4 … 20 mA) or 22 mA, user-defined Active Max. 5.5 V Passive Supply voltage 3 … 24 V...
Page 157: Device
Stratos Multi E401N 12.3 Device Product name Stratos Multi Product type E401N Measurements Amperometric oxygen/optical oxygen Contacting/inductive conductivity Dual conductivity Parameter set A and B 2 parameter sets Select via digital control input OK1 or manually Memory card Accessories for add-on functions in hazardous and safe areas...
Page 158: Interfaces
Stratos Multi E401N 12.4 Rated Operating Conditions Climatic class 3K5 according to EN 60721-3-3 Location class C1 according to EN 60654-1 Ambient temperature -20 … 60 °C / -4 … 140 °F Altitude of installation site Max. 60 V DC power supply at altitudes above 2000 m (AMSL) Relative humidity 5 … 95 %...
Page 159: Measuring Functions
Stratos Multi E401N 12.8 Measuring Functions 12.8.1 pH Digital input For Memosens sensors (pH, ORP, pH/ORP) Terminals 1 … 5 or MK-MS095N module Display ranges Temperature: -20.0 … 200.0 °C / -4 … 392 °F pH value: -2.00 … 16.00 ORP: -1999 ... 1999 mV rH value (with pH/ORP sensor): 0 … 42.5...
Page 160 Stratos Multi E401N pH calibration and adjustment Calibration with automatic buffer recognition (Calimatic) Manual calibration with entry of individual buffer values Product calibration Data entry of premeasured sensors ISFET zero point (with ISFET sensors) Temperature probe adjustment Calculation of nominal zero point Max.
Page 161: Cond
Stratos Multi E401N 12.8.2 Cond Digital input Input for Memosens sensors Terminals 1 … 5 or MK-MS095N module Measurement error Depending on sensor Module input, analog Input for analog 2- or 4-electrode sensors Measuring ranges 2-electrode sensors: 0.2 µS * c … 200 mS * c (Conductance limited to 3500 mS) 4-electrode sensors: 0.2 µS * c …...
Page 162: Condi
Stratos Multi E401N 12.8.3 CondI Digital input Toroidal conductivity sensors: SE670/680 Terminals 1 … 5 or MK-MS095N module Measurement error Depending on sensor Module input, analog Toroidal conductivity sensors: SE 655/656/660 1) 2) Measurement error < 1 % of measured value + 0.005 µS/cm Temperature input via module Pt100/Pt1000/NTC 30 kΩ...
Page 163: Oxygen
Stratos Multi E401N 12.8.4 Oxygen Digital input Memosens Standard measurement/ Input for amperometric Memosens sensors: Terminals 1 … 5 or MS095N module Trace measurement/ TAN option FW-E016 Display range Temperature: -20.0 ... 150.0 °C/-4 ... 302 °F Measurement error Depending on sensor Digital input SE740 Input for SE740 optical oxygen sensor: Terminals 1 … 6 Measuring range 0 … 300 % air saturation...
Page 164 Stratos Multi E401N 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% Trace sensor “001” (analog) Saturation 0.000 ... 150.0 % Concentration 000.0 ... 9999 µg/l /10.00 ... 20.00 mg/l (dissolved oxygen) 000.0 ... 9999 ppb/10.00 ... 20.00 ppm Volume concentration in gas 000.0 ... 9999 ppm/1.000 ... 50.00 vol% Input correction Pressure correction 0.000 ... 9999 bar/999.9 kPa/145.0 psi (adjustable) Manual or external (via current input 0(4) ... 20 mA)
Page 165: Temperature Compensation (Conductivity)
Stratos Multi E401N 12.8.5 Temperature Compensation (Conductivity) Without Linear Linear characteristic 00.00 ... 19.99 %/K Reference temperature adjustable Reference temperature 25 °C/77 °F: Natural waters acc. to EN 27888 NaCl NaCl from 0 (ultrapure water) to 26 wt% (0 ... 120 °C/32 ... 248 °F) Ultrapure water with HCl traces (0 ... 120 °C/32 ... 248 °F) Ultrapure water with NH traces (0 ...
Page 166: Diagnostics And Statistics
Stratos Multi E401N 12.9 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 Check of key functions Sensocheck Delay: approx. 30 s Automatic monitoring of glass and reference electrode (can be switched off )
Page 167: Annex
Stratos Multi E401N 13 Annex Channel II Wiring Examples, p. 168 ➜ Buffer Tables, p. 189 ➜ Calibration Solutions, p. 197 ➜ TAN Options, p. 199 ➜ Return Form, p. 214 ➜...
Page 168: Channel Ii Wiring Examples
Stratos Multi E401N 13.1 Channel II Wiring Examples 13.1.1 pH Analog Wiring Examples Example 1, pH Analog Measuring task: pH, temperature, glass impedance Sensors (example): SE 555X/1-NS8N Cable (example): ZU 0318 1 Core 4 pH Module 2 Shield 5 Cables 3 Jumper!
Page 169 Stratos Multi E401N Example 2, pH Analog Measuring 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 Cables 2 Shield 5 Sensors 3 pH Module...
Page 170 Stratos Multi E401N Example 3, pH Analog Measuring task: pH, temp, glass impedance Sensor: pH sensor e.g., SE 554X/1-NVPN, cable CA/VP6ST-003A Temperature probe: Integrated 1 Core, clear 6 Shield, yellow/green 2 Shield, red 7 pH Module 3 Jumper! 8 VP cable...
Page 171 Stratos Multi E401N Example 4, pH Analog Measuring task: pH/ORP, temp., glass impedance, reference impedance Sensors (example): pH sensor e.g., SE 555X/1-NVPN, cable CA/VP6ST-003A Temperature probe: Integrated 1 Equipotential bonding electrode ZU0073 6 White 2 Core, clear 7 Shield, yellow/green 3 Shield, red...
Page 172 Stratos Multi E401N Example 5, pH Analog Measuring 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 Module 3 Blue...
Page 173 Stratos Multi E401N Example 6, Pfaudler Probe Channel II, requires TAN option FW-E017 “Operation with double high-impedance pH sensors” 1 Pfaudler probe 3 Cables 2 pH Module Module pH Reiner with EP Differential, models Models 03/04 with EP Models 03/04 without VP connector...
Page 174: Orp Analog Wiring Example
Stratos Multi E401N 13.1.2 ORP Analog Wiring Example Note: Disable Sensocheck. Measuring task: ORP, temp., glass impedance, reference impedance Sensors (example): ORP: SE 564X/1-NS8N Cable (example): ZU 0318 1 Jumper! 4 pH Module 2 Shield 5 Cables 3 Core 6 Sensors...
Page 175: Contacting Conductivity Wiring Examples
Stratos Multi E401N 13.1.3 Contacting Conductivity Wiring Examples Example 1, Cond Measuring task: Conductivity, temperature Sensors (principle): 4 electrodes 1 Place jumper across F and G when a 2-wire temperature probe is used! 2 Shield 4 Cables 3 Cond Module...
Page 176 Stratos Multi E401N Example 2, Cond Measuring task: Conductivity, temperature Sensors (principle): 2 electrodes, coaxial 1 Jumper! 4 Cond Module 2 Place jumper across F and G when a 2-wire tem- 5 Cables perature probe is used! 3 Shield 6 Sensors...
Page 177 Stratos Multi E401N Example 3, Cond Measuring task: Conductivity, temperature Sensors (example): 2-electrode sensor, SE604, cable ZU0645 1 White 8 Red 2 Pink 9 Black, shield 3 Brown 10 Cond Module 4 Gray 11 Cables 5 Blue 12 Sensors 6 Green...
Page 178 Stratos Multi E401N Example 4, Cond Measuring task: Conductivity, temperature Sensors (example): 2-electrode sensor SE610 1 Jumper! 5 Yellow 2 Brown 6 Cond Module 3 White 7 Fixed cable 4 Green 8 Sensors...
Page 179 Stratos Multi E401N Example 5, Cond Measuring 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 Module 4 Blue 10 VP cable 5 Green...
Page 180 Stratos Multi E401N Example 6, Cond Measuring task: Conductivity, temperature Sensors (example): 2-electrode sensor SE630 1 Brown 7 Pink 2 Yellow 8 Black, shield 3 Green 9 Cond Module 4 White 10 Cables 5 Gray 11 Sensors 6 Red 12 Sensor head connector...
Page 181 Stratos Multi E401N Example 7, Cond Measuring task: Conductivity, temperature Sensors (example): 4-electrode fringe-field sensor, SE600/SE603 1 Gray 7 Yellow 2 Pink 8 Green 3 Blue 9 Shield yellow/green 4 Red 10 Cond Module 5 Brown, do not connect 11 Cables...
Page 182: Inductive Conductivity Wiring Examples
Stratos Multi E401N 13.1.4 Inductive Conductivity Wiring Examples Example 1, Condl Measuring task: Inductive conductivity/temperature Sensors: SE655 or SE656 1 Blue 6 White 2 Red 7 Yellow 3 Coax red 8 Shield green/yellow 4 Coax white 9 CondI Module 5 Green...
Page 183 Stratos Multi E401N Example 2, Condl Measuring task: Conductivity, temperature Sensor: SE660 1 Blue 6 White 2 Red 7 Yellow 3 Coax red 8 Shield green/yellow 4 Coax BK 9 CondI Module 5 Green 10 Cables...
Page 184: Dual Conductivity Wiring Examples
Stratos Multi E401N 13.1.5 Dual Conductivity Wiring Examples Example 1, Dual Conductivity Measuring task: Dual conductivity, temperature Sensors A, B: 2x 2-electrode conductivity sensors 1 MK-CC065N module 8 Sensors 2 2x cable...
Page 185 Stratos Multi E401N Example 2, Dual Conductivity Measuring task: Dual conductivity, temperature Sensors A, B: 2x SE604 2-electrode conductivity sensor 1 White/pink 5 Black 2 Brown/gray 6 MK-CC065N module 3 Yellow/red 7 2x ZU0645 cable 4 Green 8 Sensors...
Page 186 Stratos Multi E401N Example 3, Dual Conductivity Measuring task: Dual conductivity, temperature Sensors A, B: 2x SE610 2-electrode conductivity sensor 1 White 5 Black 2 Brown 6 MK-CC065N module 3 Yellow 7 2x cable 4 Green 8 Sensors...
Page 187: Oxygen Wiring Examples
Stratos Multi E401N 13.1.6 Oxygen Wiring Examples Standard Oxygen Wiring Example Measuring task: Oxygen (standard) Sensors (example): e.g., SE706 Cable (example): CA/VP6ST-003A (ZU0313) 1 Core 5 Gray 9 Oxygen measuring module 2 Blue 6 Green 10 VP6 cable 3 Jumper!
Page 188 Stratos Multi E401N Trace Oxygen Measurement Wiring Example Measuring task: Trace oxygen measurement, TAN option FW-E015 Sensors (example): Model “01” (e.g., SE707) Cable (example): CA/VP6ST-003A (ZU0313) 1 Core 5 Gray 9 Oxygen measuring module 2 Blue 6 Green 10 VP6 cable...
Page 189: Buffer Tables
Stratos Multi E401N 13.2 Buffer Tables Buffer Table, Knick CaliMat °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 6.99 8.95 11.87...
Page 190 Stratos Multi E401N Buffer Table, Merck/Riedel °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 12.1 2.00 4.00 7.00 9:00 AM 12.00 2.00 4.01 6.98 8.95 11.88 2.00 4.01 6.98...
Page 191 Stratos Multi E401N Buffer Table, NIST Standard (DIN 19266: 2015-05) °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 9.180 12.454 1.683...
Page 192 Stratos Multi E401N Buffer Table, NIST Technical Buffers °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 4.005 7.00 10.01 12.46 1.68 4.015...
Page 193 Stratos Multi E401N Buffer Table, Kraft °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 4.01 6.98 8.91...
Page 194 Stratos Multi E401N Buffer Table, Hamilton B °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 1.99 4.01 6.00...
Page 195 Stratos Multi E401N Buffer Table, Ciba °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 9.89 2.06 4.01 6.95 9.85 2.07 4.02...
Page 196 Stratos Multi E401N Buffer Table, Reagecon °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 4.01 6.99 8.95...
Page 197: Calibration Solutions
Stratos Multi E401N 13.3 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 198 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 199: Tan Options
Stratos Multi E401N 13.4 TAN Options The functions described below are available after enabling their TAN options. Option Activation, p. 47 ➜ 13.4.1 pH Buffer Table: Entry of Individual Buffer Set (FW-E002) The FW-E002 add-on function must be activated in the device with a TAN for the specifiable buffer ta- ble.
Page 200 Buffer set: Fill in your configuration data or use the table as original for copy. Temperature (°C) Buffer 1 Buffer 2...
Page 201: Current Characteristic (Fw-E006)
Stratos Multi E401N 13.4.2 Current Characteristic (FW-E006) The FW-E006 add-on function must be activated in the device with a TAN for the specifiable current characteristic. Option Activation, p. 47 ➜ Assignment of output current to process variables in 1-mA increments.
Page 202 Stratos Multi E401N Specifying a concentration solution for conductivity measurement To specify the customer-specific solution, 5 concentration values A-E are entered in a matrix together with 5 temperature values 1-5. First enter the 5 temperature values, then the corresponding conductivity values for each of the concentrations A-E.
Page 203 Stratos Multi E401N Concentration Curves Conductivity [mS/cm] versus substance concentration [wt%] and media temperature [°C] Sodium Chloride Solution NaCl c [wt%] Hydrochloric Acid HCl c [wt%]...
Page 204 Stratos Multi E401N Sodium Hydroxide Solution NaOH c [wt%] Sulfuric Acid H c [wt%]...
Page 205 Stratos Multi E401N Nitric Acid HNO c [wt%] Oleum H •SO 120 °C 100 °C 85 °C 70 °C 55 °C 40 °C 25 °C 10 °C c [wt%]...
Page 206: Calculation Blocks (Fw-E020)
Stratos Multi E401N 13.4.4 Calculation Blocks (FW-E020) After activating TAN option FW-E020, two calculation blocks that can convert existing process vari- ables to new variables are available. Option Activation, p. 47 ➜ In addition, the general device status (NAMUR signals) is taken into account.
Page 207 Stratos Multi E401N 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 Combination in Calculation Block Process variable...
Page 208 Stratos Multi E401N When calculating Cond/Cond, it is possible to determine a pH value from the measured conductivity values. Settings can be changed in the submenu: pH Value Adjustable parameters for pH value calculation   Parameter Setting [CI/II] Cond/Cond Calculation...
Page 209: Hart (Fw-E050)
Stratos Multi E401N 13.4.5 HART (FW-E050) The device’s HART interface is activated as follows: Enable the HART interface on the device using a TAN option number.     Parameter Setting System Control Enable Options 050 HART Active Switch on current output I1 on the device and set it to 4 ... 20 mA, as HART communication re- quires a current.
Page 210: Parameter Sets 1-5 (Fw-E102)
Stratos Multi E401N 13.4.6 Parameter Sets 1-5 (FW-E102) The FW-E102 add-on function must be activated in the device with a TAN for use of parameter sets 1-5. Option Activation, p. 47 ➜ Saving a Parameter Set on the Data Card 2 complete parameter sets (A, B) are stored in the device.
Page 211: Measurement Recorder (Fw-E103)
Stratos Multi E401N 13.4.7 Measurement Recorder (FW-E103) The FW-E103 add-on function must be activated in the device with a TAN for use of the measurement recorder. Option Activation, p. 47 ➜ The measurement recorder logs measured values and additional values depending on its parameter setting.
Page 212 Stratos Multi E401N Deleting the Measurement Recorder’s Data:   Parameter Setting System Control Measurement Recorder Saving to Data Card Note: The device's internal memory has limited capacity and continuously overwrites the oldest data set after reaching maximum memory capacity. For recording sessions that take a long time, a data card is absolutely necessary.
Page 213: Firmware Update (Fw-E106)
Stratos Multi E401N 13.4.8 Firmware Update (FW-E106) Note: First check whether your device really requires a firmware update. The FW-E106 add-on function must be activated in the device with a TAN for the firmware update. Option Activation, p. 47 ➜...
Page 214 I have answered the above questions to the best of my knowledge. Name: Company: Date: Signature: Knick Elektronische Messgeräte GmbH & Co. KG Beuckestraße 22, 14163 Berlin, Germany Phone: +49 30 80191-0 Declaration of Contamination Fax: +49 30 80191-200 087148 info@knick.de • www.knick.de...
Page 215: Basics
Stratos Multi E401N 14 Basics 14.1 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 variable) is continuously measured and compared with the specified setpoint.
Page 216 Stratos Multi E401N PID Controller This controller contains the P, I, and D basic action of linear controllers. In the PID control system, the manipulated variable corresponds to an addition of the output variables of a P, I, and D control system.
Page 217: Index
Stratos Multi E401N Index 2-channel conductivity measurement Calibration/Adjustment Calibration solutions 197 Cond 110 Cond presettings 79 Access control CondI 115 Change passcodes 48 Condl presettings 86 Adaptive calibration timer General 98 Add-on function Memosens 98 Activate 47 107 Descriptions 199 ORP presettings 74...
Page 218 Stratos Multi E401N Delta function 70, 74 Device diagnostics Device information I controller Diagnostic functions Icons Calibration/Adjustment record 132 Overview 18 Channel I/II 131 Input OK1 Device information 130 Function control 46 Device self-test 131 Parameter set selection 45 Logbook 129...
Page 219 Stratos Multi E401N Membrane body replacement, confirm Out of Specification Memory card Display message 136 Insert 153 Signaling via relay contact 58 Parameter setting 43 Output current Memory card types Current characteristic (FW-E006) 201 Memosens Manual entry 134 Sensor connection 31...
Page 220 Stratos Multi E401N Process variable conductivity (inductive) Sensocheck Cable preparation for SE655/SE656 33 Sensoface Calibration/Adjustment 115 Criteria 152 Parameter setting 83 Description 151 Wiring examples, analog sensors 182 Relay contact 60 Process variable ORP Sensor connection Calibration/Adjustment 107 Insert module 32...
Page 221 Stratos Multi E401N TAN option FW-E103 Measurement recorder Delete data 47 Ultrapure water with trace impurities Description 211 Units/formats, parameter setting Display data 211 User interface TAN option FW-E104 Logbook USP function TAN option FW-E106 Firmware update Display values 81, 87 Temp.
Page 222 Knick Elektronische Messgeräte GmbH & Co. KG Headquarters Beuckestraße 22 • 14163 Berlin Germany Phone: +49 30 80191-0 Fax: +49 30 80191-200 info@knick.de www.knick.de Local Contacts www.knick-international.com Copyright 2020 • Subject to change Version 1.1 • This document was published on April 15, 2020.

Knick Stratos Multi E401N User Manual

1 Safety

2 Product

3 Commissioning

4 Operation and Use

5 Parameter Setting

6 Calibration/Adjustment

7 Diagnostics

8 Maintenance

9 Decommissioning

10 Troubleshooting

11 Accessories

12 Specifications

13 Annex

14 Basics

Index

Quick Links

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