Swann AMU-II ph/Redox Operator's Manual
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Swann AMU-II ph/Redox Operator's Manual

Swann AMU-II ph/Redox Operator's Manual

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A-96.150.441 / 230523
AMU-II pH/Redox
Operator's Manual
AMU-II pH/Redox

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  • Page 1 A-96.150.441 / 230523 AMU-II pH/Redox Operator’s Manual AMU-II pH/Redox...
  • Page 2 Swan Analytische Instrumente AG Studbachstrasse 13 8340 Hinwil Switzerland Internet: www.swan.ch E-mail: support@swan.ch Document Status AMU-II pH/Redox Operator’s Manual Title: A-96.150.441 Revision Issue May 2023 First edition © 2023, Swan Analytische Instrumente AG, Switzerland, all rights reserved. This manual applies to firmware V1.02 and higher.

  • Page 3: Table Of Contents

    AMU-II pH/Redox Transmitter ........10...
  • Page 4 AMU-II pH/Redox Operation ........... . . 32 5.1.

  • Page 5: Safety Instructions

    AMU-II pH/Redox Safety Instructions Operator’s Manual This document describes the main steps for instrument setup, operation and maintenance. Safety Instructions General The instructions included in this section explain the potential risks associated with instrument operation and provide important safety practices designed to minimize these risks.

  • Page 6: Warning Notices

    AMU-II pH/Redox Safety Instructions 1.1. Warning Notices The symbols used for safety-related notices have the following meaning: DANGER Your life or physical wellbeing are in serious danger if such warn- ings are ignored.  Follow the prevention instructions carefully. WARNING Severe injuries or damage to the equipment can occur if such warnings are ignored.
  • Page 7 AMU-II pH/Redox Safety Instructions Warning signs The warning signs in this manual have the following meaning: Electrical shock hazard Corrosive Harmful to health Flammable Warning general Attention general A-96.150.441 / 230523...

  • Page 8: General Safety Regulations

    AMU-II pH/Redox Safety Instructions 1.2. General Safety Regulations Legal The user is responsible for proper system operation. All precautions must be followed to ensure safe operation of the instrument. requirements Spare Use only official Swan spare parts and disposables. If other parts are used during the normal warranty period, the manufacturer’s...

  • Page 9: Product Description

    AMU-II pH/Redox Product Description Product Description 2.1. Description of the System Application pH and ORP are measured in many applications as for example potable water, high purity water or waste water. Each application re- quires different fittings, flow cells, and sensors.
  • Page 10 For the AMU-II pH/Redox four types of pH electrodes are available.  The Swansensor pH Standard is a combined gel electrode for application in drinking water and swimming pools. Gel electrodes can not be filled again and have a limited life time.
  • Page 11 AMU-II pH/Redox Product Description ORP Electrode For the AMU-II pH/Redox four types of redox (ORP) electrodes are available.  The Swansensor redox (ORP) Standard is a combined gel electrode for application in drinking water and swimming pools. Gel electrodes can not be filled again and have a limited life time.

  • Page 12: Single Components

    AMU-II pH/Redox Product Description 2.2. Single Components 2.2.1 AMU-II pH/Redox Transmitter ® General Electronics housing: Noryl resin Protection degree: up to IP54 (front) Ambient temperature: -10 to +50 °C Humidity: 10–90% rel., non condensing Display: backlit LCD, 75 x 45 mm...

  • Page 13: Flow Cell M-Flow 10-3Pg

    AMU-II pH/Redox Product Description 2.2.2 Flow Cell M-Flow 10-3PG Flow cell for potable water applications for the installation of three sensors, i.e. a pH or redox sensor, a reference sensor and a tem- perature sensor. Sensor cleaning available as an option.

  • Page 14: Flow Cell Qv-Flow Ss316L Phrt

    AMU-II pH/Redox Product Description 2.2.3 Flow Cell QV-Flow SS316L pHRT Made of stainless steel SS316L with built-in Pt1000 temperature sensor and a Swagelok connection for 1/4" tube. With flow measure- ment and needle valve. For the installation of two sensors i.e. a pH or redox sensor and a reference sensor.

  • Page 15: Flow Cell B-Flow Is1000

    AMU-II pH/Redox Product Description 2.2.4 Flow Cell B-Flow IS1000 Stainless steel flow cell for 2 sensors with integrated Pt1000 tem- perature sensor. Suitable for all sensors with PG13.5 screw head and a max. shaft length of 120 mm. 120 198...

  • Page 16: Swansensor Ph And Redox Standard

    AMU-II pH/Redox Product Description 2.2.5 Swansensor pH and Redox Standard Combined electrode with gel electrolyte for application in drinking water and swimming pools. 120 ±2 Ø 12 pH Sensor Redox Sensor Sensor cable with plug Specifications Operative and measuring range:...

  • Page 17: Swansensor Ph And Redox Ay

    AMU-II pH/Redox Product Description 2.2.6 Swansensor pH and Redox AY Combined electrode with gel electrolyte for application in waste wa- ter due to additional salt supplies. 120 ±2 Ø 12 pH Sensor Redox Sensor Sensor cable with plug Specifications Operative and measuring range:...

  • Page 18: Swansensor Ph And Redox Si

    AMU-II pH/Redox Product Description 2.2.7 Swansensor pH and Redox SI pH/Redox electrode with reference electrode for the measurement of pH/Redox value in power plants. pH Sensor Redox Sensor Specifications Operative and measuring range: 1 to 12 pH pH-Sensor Operating temperature: 0–50 °C...

  • Page 19: Swansensor Ph And Redox Fl

    AMU-II pH/Redox Product Description 2.2.8 Swansensor pH and Redox FL pH /Redox electrode for the measurement of pH value or redox po- tential in high purity water. Only in combination with Swansensor Reference FL. 120 ±2 Ø 12 pH Sensor...

  • Page 20: Swansensor Reference Fl

    AMU-II pH/Redox Product Description 2.2.9 Swansensor Reference FL Reference electrode for Swansensor pH FL or Swansensor Redox Specifications Reference system: Ag/AgCl Electrolyte: KCl, 3.5 M Operating temperature: 0–50 °C Pressure: pressure free Min. Conductivity: min. 0.055 µS/cm Connection: plug PG 13.5 2.2.10 Spray Nozzle...

  • Page 21: Installation

    AMU-II pH/Redox Installation Installation 3.1. Mounting of the AMU-II Transmitter Transmitter 96.0 mm / 3.78" dimensions 85.0 mm / 3.35" 78.0 mm / 3.07" A-96.150.441 / 230523...
  • Page 22 AMU-II pH/Redox Installation Cutout 92 mm / 3.62" dimensions A-96.150.441 / 230523...

  • Page 23: Electrical Connections

    AMU-II pH/Redox Installation 3.2. Electrical Connections Connection diagram CAUTION Use only the terminals shown in this diagram, and only for the mentioned purpose. Use of any other terminals will cause short circuits with possible corresponding consequences to material and personnel.

  • Page 24: Power Supply

    FV1  Mains equipped with an external switch or circuit-breaker – near the instrument – easily accessible to the operator – marked as interrupter for AMU-II pH/Redox 3.4. Sensor Terminals: see Connection diagram, p. Sensor settings: see Instrument Setup, p.

  • Page 25: Input

    AMU-II pH/Redox Installation 3.6. Input Note: Use only potential-free (dry) contacts. Terminals 16/8 For programming see Program List and Explanations, p. 3.7. Relay Contacts 3.7.1 Alarm Relay Note: Max. load 100 mA/50 V Alarm output for system errors. For error codes see Error List, p.

  • Page 26: Signal Output 1 And 2 (Current Outputs)

    AMU-II pH/Redox Installation 3.8. Signal Output 1 and 2 (Current Outputs) Note: Max. burden 510 Ω If signals are sent to two different receivers, use signal isolator (loop isolator). Signal output 1: Terminals 12 (+) and 11 (-) Signal output 2: Terminals 13 (+) and 11 (-) For programming see Program List and Explanations, p.

  • Page 27: Interface Options

    AMU-II pH/Redox Installation 3.9. Interface Options The functionality of the AMU-II pH/Redox can be expanded with one of the following interface options:  RS485 with Modbus or Profibus protocol  HART  USB 3.9.1 Installation WARNING Electrical shock hazard Before opening the housing, disconnect the AMU-II transmitter from the power supply.
  • Page 28 AMU-II pH/Redox Installation To install an interface option, proceed as follows: 1 Switch power off. 2 Loosen the four screws at the back of the AMU-II transmitter and remove the backplate. 3 Pull the mainboard [B] completely out of the housing.

  • Page 29: Usb Option

    AMU-II pH/Redox Installation 3.9.2 USB Option C USB stick Pushbutton Blue LED Menu item Calling up the <Operation>/<Eject USB Stick> menu item performs the following actions:  the calibration history and the event history are copied to the USB stick, ...

  • Page 30: Rs485 Option

    AMU-II pH/Redox Installation 3.9.3 RS485 Option Menu items After the RS485 option has been installed, the <Installation>/ <Interface> menu item becomes visible. Select Modbus RTU or Profibus as protocol. Terminating On the last RS485 interface in the network, move the switch to the position marked “Ron”...

  • Page 31: 3.10. Rs232 Interface

    AMU-II pH/Redox Installation 3.10. RS232 Interface The RS232 interface is located on the back of the AMU-II transmitter. Use the USB to RS232 interface converter available from Swan. Downloading To use the functions provided via the RS232 interface, the SwanTerminal program is required, which can be downloaded from SwanTerminal www.swan.ch.

  • Page 32: Instrument Setup

    AMU-II pH/Redox Instrument Setup Instrument Setup 4.1. Establish Sample Flow 1 Open sample flow tap. 2 Wait until the flow cell is completely filled. 3 Switch on power. 4.2. Programming Programming Set all necessary sensor parameters in menu 5.1 Installation/Sen- sors, further information see 5.1 Sensors, p.
  • Page 33 AMU-II pH/Redox Instrument Setup Set buffer Please note that this list is only valid for Swan buffers. If you use dif- ferent buffers please ask the manufacturer. values The temperature curves for the buffer solutions  standard 1 (pH7) and ...

  • Page 34: Operation

    AMU-II pH/Redox Operation Operation 5.1. Keys to exit a menu or command (rejecting any changes) to move back to the previous menu level to move DOWN in a menu list and to decrease digits to move UP in a menu list and to increase digits...

  • Page 35: Display

    AMU-II pH/Redox Operation 5.2. Display AMU-II pH/REDOX 15:20:18 8.45 6.5 l/h 24.8°C normal operation HOLD input closed or cal delay: Instrument on hold (shows status of signal outputs). input closed: control/limit is interrupted (shows status of signal outputs). ERROR Error...

  • Page 36: Software Structure

    AMU-II pH/Redox Operation 5.3. Software Structure Main Menu Messages Diagnostics Maintenance Operation Installation Menu Messages 1 Messages Reveals pending errors as well as an event history Pending Errors (time and state of events that have occurred at an Message List earlier point of time).

  • Page 37: Changing Parameters And Values

    AMU-II pH/Redox Operation 5.4. Changing Parameters and values Changing The following example shows how to change the logger interval: parameters 1 Select the parameter you want to Sensors Logger 5.1.2 4.4.1 change. Sensor type FOME Log interval 30 min 2 Press [Enter] Disinf.

  • Page 38: Maintenance

    AMU-II pH/Redox Maintenance Maintenance 6.1. Stop of Operation for Maintenance 1 Stop sample flow. 2 Shut off power of the instrument. 6.2. Process Calibration Process The process calibration is based on a comparative measurement of the on-line instrument with a correct manual measurement.
  • Page 39 AMU-II pH/Redox Maintenance The deviation of the measured values is shown as offset in mV. Select <Save> and press [Enter] to save the correct value. Calibration Maintenance 3.1.1 Process pH Calibration Calibration Enter Standard pH Simulation Set Time 01.01.05 16:30:00 Enter the correct value Process Cal.

  • Page 40: Standard Calibration

    AMU-II pH/Redox Maintenance 6.3. Standard Calibration Standard The ideal pH electrode has an offset of 0 mV at pH 7 and a slope of 59.16 mV/pH unit. Real electrodes differ from this ideal. Therefore, pH Calibration pH electrodes are calibrated with two buffer solutions of different pH values.
  • Page 41 AMU-II pH/Redox Maintenance Standard 1 Navigate to menu <Maintenance>/ Maintenance pH or ORP <Calibration>. Calibration Enter calibration 2 Press [Enter]. Simulation Set Time 01.06.04 16:30:00 3 Remove the pH sensor (and, if ap- Enter Fill System plicable, temp. sensor) from the flow cell.

  • Page 42: Quality Assurance Of The Instrument

    Every SWAN on-line instrument is equipped with integrated, autono- mous quality assurance functions to survey the plausibility of each measurement. For AMU-II pH/Redox these are:  continuous monitoring of sample flow  continuous monitoring of the temperature inside the transmitter...

  • Page 43: Activate Swan Quality Assurance Procedure

    AMU-II pH/Redox Maintenance Limits and interval for AMU-II pH/Redox max. deviation max. deviation min. inspection Quality Level temperature [°C] result [%] interval 0: Off 0.5 °C 1: Trend annual 0.4 °C 2: Standard quarterly 0.3 °C 3: Crucial monthly 0–2 °C 0–20%...

  • Page 44: Pre-Test

    Remaining operating time on display minimum 20 hours. – Disable temperature compensation (set to “none”)  On-line instrument: AMU-II pH/Redox: – Good order and condition; Flow cell free of particles, Sensor surface free of deposits. – Check message list; Review the message list in menu 1.3 and check for alarms (as for example flow alarms).
  • Page 45 2 Connect sample line of the AMU-II pH/Redox [A] with the sample inlet of the reference instrument AMI INSPECTOR pH. Use the supplied tube, made of FEP.

  • Page 46: Carry Out Comparison Measurement

    Maintenance 6.4.4 Carry out comparison measurement The comparison measurement is menu driven. Start by selecting Quality assurance in menu 3.4 of the monitor AMU-II pH/Redox. Note: Temperature compensation is automatically deactivated during comparison measurement. 1 Carry out pre test preparations.

  • Page 47: Completion Of The Measurement

    Maintenance 6.4.5 Completion of the measurement 1 Stop the sample flow to the AMU-II pH/Redox by closing the ap- propriate valve, e.g. back pressure regulator, sample preparation or flow regulating valve at flow cell again. 2 Close flow regulating valve of the AMI Inspector.

  • Page 48: Longer Stop Of Operation

    AMU-II pH/Redox Maintenance 6.5. Longer Stop of Operation 1 Stop sample flow. 2 Shut off power of the instrument. 3 Unscrew and remove the connectors from the electrodes. 4 Put the connector caps on it. 5 Remove the electrodes from the flow cell.

  • Page 49: Error List

    AMU-II pH/Redox Error List Error List Error Non-fatal Error. Indicates an alarm if a programmed value is exceeded. Such Errors are marked E0xx (bold and black). Fatal Error (blinking symbol) Control of dosing devices is interrupted. The indicated measured values are possibly incorrect.
  • Page 50 AMU-II pH/Redox Error List Error Description Corrective action – check process E001 Alarm high – check programmed value, see 5.3.1.1.1, p. 65 – check process E002 Alarm low – check programmed value, see 5.3.1.1.25, p. – check process E007 Sample temp. high –...
  • Page 51 AMU-II pH/Redox Error List Error Description Corrective action – call service E031 Cal. recout – call service E032 Wrong frontend – none, normal status E033 Power-on – none, normal status E034 Power-down A-96.150.441 / 230523...

  • Page 52: Program Overview

    AMU-II pH/Redox Program Overview Program Overview For explanations about each parameter of the menus see Program List and Explanations, p.  Menu 1 Messages informs about pending errors and mainte- nance tasks and shows the error history. Password protection possible. No settings can be modified.

  • Page 53: Diagnostics (Main Menu 2)

    AMU-II pH/Redox Program Overview 8.2. Diagnostics (Main Menu 2) Identification Desig. AMU-II pH/Redox * Menu numbers 2.1* Version V1.02-02/23 Factory Test 2.1.3.1* Instrument 2.1.3* Motherboard Front End Operating Time 2.1.4.1* Years / Days / Hours / Minutes / Seconds 2.1.4*...

  • Page 54: Maintenance (Main Menu 3)

    AMU-II pH/Redox Program Overview 8.3. Maintenance (Main Menu 3) Calibration Process pH 3.1.1.4* * Menu numbers Process pH 3.1* 3.1.1* Standard pH 3.1.2.5* Standard pH 3.1.2* Simulation 3.2.1* Alarm Relay 3.2* 3.2.2* Relay 1 Relay 2 3.2.3* 3.2.4* Signal Output 1 3.2.5*...

  • Page 55: Installation (Main Menu 5)

    AMU-II pH/Redox Program Overview 8.5. Installation (Main Menu 5) Sensors Flow 5.1.1.1* * Menu numbers Flow measurement 5.1* 5.1.1* Parameter Type of sensor 5.1.2.1* 5.1.2* 5.1.2.2* Sensor Check Temperature 5.1.3.1* Temp. Sensor 5.1.3 5.1.3.21* Default Temp. Temp. Compensation Comp. 5.1.3.3.1* 5.1.3.3*...
  • Page 56 AMU-II pH/Redox Program Overview Input 5.3.4.1* * Menu numbers Active 5.3.4* 5.3.4.2* Signal Outputs 5.3.4.3* Output/Control Fault 5.3.4.4* 5.3.4.5* Delay Miscellaneous 5.4.1* Language 5.4* 5.4.2* Set defaults 5.4.3* Load Firmware Password Messages 5.4.4.1* 5.4.4* 5.4.4.2* Maintenance 5.4.4.3* Operation 5.4.4.4* Installation 5.4.5*...

  • Page 57: Program List And Explanations

    AMU-II pH/Redox Program List and Explanations Program List and Explanations 1 Messages 1.1 Pending Errors 1.1.5 Provides the list of active errors with their status (active, acknowl- edged). If an active error is acknowledged, the alarm relay is active again. Cleared errors are moved to the Message list.
  • Page 58 AMU-II pH/Redox Program List and Explanations 2.2.2 Miscellaneous: 2.2.2.1 Case Temp: Shows the actual temperature in °C inside the transmit- ter. 2.2.3 QA History: Shows the QA values of the last quality assurance pro- cedures: Number: Each QA measurement is assigned to a number.

  • Page 59: Maintenance

    AMU-II pH/Redox Program List and Explanations 2.5 Interface Only available if optional interface is installed. Shows the programmed communication settings. 3 Maintenance 3.1 Calibration 3.1.1 Process pH/Redox: The process calibration is based on a compar- ative measurement of the current electrode with a calibrated compar- ative electrode.

  • Page 60: Operation

    AMU-II pH/Redox Program List and Explanations 3.3 Set Time Adjust date and time. 4 Operation 4.1 Sensors 4.1.1 Filter Time Constant: Used to damp noisy signals. The higher the fil- ter time constant, the slower the system reacts to changes of the measured value.

  • Page 61: Installation

    AMU-II pH/Redox Program List and Explanations 5 Installation 5.1 Sensors 5.1.1 Flow 5.1.1.1 Flow measurement: Select “Q-Flow” or “None”. The deltaT flow sen- sor is not supported by the AMU-II transmitter. Flow measurement Q-Flow None Q-Flow deltaT 5.1.2 Parameters: 5.1.2.1 Type of Sensor: Set the type of installed sensor.

  • Page 62: Temp. Compensation

    AMU-II pH/Redox Program List and Explanations 5.1.3.3 Temp. Compensation: (only available for pH measurement) 5.1.3.3.1 Comp.: Choose the compensation model which fits best to your ap- plication. Available compensation models: Comp. We recommend Nernst for potable water, waste water, swimming pools...
  • Page 63 AMU-II pH/Redox Program List and Explanations 5.2 Signal Outputs Note: The navigation in the menu <Signal Output 1> and <Signal Output 2> is identical. For reason of simplicity only the menu numbers of Signal Output 1 are used in the following.
  • Page 64 AMU-II pH/Redox Program List and Explanations As process The process value can be represented in 3 ways: linear, bilinear or logarithmic. See graphs below. values [mA] 0 / 4 linear X Measured value bilinear [mA] 0 / 4 1’000 10’000 X Measured value (logarithmic) A-96.150.441 / 230523...

  • Page 65: Signal Output

    AMU-II pH/Redox Program List and Explanations 5.2.1.40 Scaling: Enter beginning and end point (Range low & high) of the linear or logarithmic scale. In addition, the midpoint for the bilinear scale. Parameter Meas. Value: pH sensor Redox sensor 5.2.1.40.10 -3 pH to +15 pH...
  • Page 66 AMU-II pH/Redox Program List and Explanations Ziegler-Nichols method for the optimization of a PID controller: Parameters: Setpoint, P-Band, Reset time, Derivative time Response to maximum control output = 1.2/a Tangent on the inflection point = 2L Time = L/2 The point of intersection of the tangent with the respective axis will result in the parameters a and L.
  • Page 67 AMU-II pH/Redox Program List and Explanations 5.2.1.43 Control Parameters: if Parameters = Sample flow 5.2.1.43.12 Setpoint: 0.0 l/h –200 l/h 5.2.1.43.22 P-Band: 0.0 l/h –200 l/h 5.2.1.43.3 Reset time: The reset time is the time till the step response of a sin- gle I-controller will reach the same value as it will be suddenly reached by a P-controller.
  • Page 68 AMU-II pH/Redox Program List and Explanations 5.3.1.1.35 Hysteresis: Within the hyst. range, the relay does not switch. This prevents damage of relays contacts when the measured value fluctu- ates around the alarm value. pH sensor Redox sensor 0.00 pH to 2.00 pH 0 mV to +200 mV Range: 5.3.1.1.45...

  • Page 69: Parameter

    AMU-II pH/Redox Program List and Explanations 5.3.2 and 5.3.3 Relay 1 and 2: The contacts can be set as normally open or normal- ly closed with a jumper. See Relay 1 and 2, p. The function of relay contacts 1 or 2 are defined by the user Note: The navigation in the menu <Relay 1>...
  • Page 70 AMU-II pH/Redox Program List and Explanations 5.3.2.400 Hysteresis: within the hysteresis range, the relay does not switch. This prevents damage of relay contacts when the measured value fluctuates around the alarm value. Parameter Range: pH sensor Redox sensor Meas. Value 0.00 pH to +2.00 pH...
  • Page 71 AMU-II pH/Redox Program List and Explanations 5.3.2.32.1 Actuator = Frequency Examples of metering devices that are pulse frequency driven are the classic membrane pumps with a potential free triggering input. Dosing is controlled by the repetition speed of dosing shots.
  • Page 72 AMU-II pH/Redox Program List and Explanations 5.3.2.6 Signal Outputs: Select operating mode of the signal output: Signal outputs continue to issue the measured value. Cont.: Hold: Signal outputs hold the last valid measured value. Measurement is interrupted. Errors, except fatal errors, are not issued.
  • Page 73 AMU-II pH/Redox Program List and Explanations 5.3.2.342 Calendar: 5.3.2.342.1 Start time: The programmed start time is valid for each of the pro- grammed days. To set the start time see 5.3.2.341, p. Range: 00:00:00–23:59:59 5.3.2.342.2 Monday: Possible settings, on or off 5.3.2.342.8...
  • Page 74 AMU-II pH/Redox Program List and Explanations 5.3.4.4 Fault: No message is issued in pending error list and the alarm relay does not close when input is active. Message E024 is stored in the message list. Message E024 is issued and stored in the message Yes: list.
  • Page 75 AMU-II pH/Redox Program List and Explanations 5.4.4 Password: Select a password different from 0000 to prevent unau- thorized access to the menus “Messages”, “Maintenance”, “Opera- tion” and “Installation”. Each menu can be protected by a different password. If you forgot the passwords, contact the closest SWAN representative.

  • Page 76: Default Values

    AMU-II pH/Redox Default Values Default Values Note: The AMU-II pH/Redox has two different operating modes (pH or Redox) which can be set in menu <Type of sensor>. The instrument remains in selected operating mode even after the <Default Values> are reset completely. Therefore this default value list is divided in the two parts pH and Redox where necessary.
  • Page 77 AMU-II pH/Redox Default Values Signal Output 2 Parameter: ..............Temperature Current loop: ............... 4 –20 mA Function: ..................linear Scaling: Range low: ..............0 °C Scaling: Range high:..............50 °C Alarm Relay Alarm: Alarm high:................15.00 pH pH mode Alarm low: ................-3.00 pH Hysteresis: ................0.10 pH...
  • Page 78 AMU-II pH/Redox Default Values Parameter:..............Sample flow Settings: Actuator: ............Frequency Settings: Pulse Frequency: ..........120/min Settings: Control Parameters: Setpoint:......25.0 l/h Settings: Control Parameters: P-band: ........1 l/h Settings: Control Parameters: Reset time:........0 s Settings: Control Parameters: Derivative Time: ......0 s Settings: Control Parameters: Control Timeout:......0 min...

  • Page 79: Notes

    AMU-II pH/Redox Notes Notes A-96.150.441 / 230523...
  • Page 80 Swan Products - Analytical Instruments for: Swan is represented worldwide by subsidiary companies and distributors and cooperates with independent representatives all over the world. For contact in- formation, please scan the QR code. Swan Analytical Instruments ∙ CH-8340 Hinwil www.swan.ch ∙ swan@swan.ch AMU-II pH/Redox...

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