Swann AMU-II Oxytrace Operator's Manual
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Swann AMU-II Oxytrace Operator's Manual

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A-96.150.541 / 111223
AMU-II Oxytrace
Operator's Manual
AMU-II Oxytrace

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  • Page 1 A-96.150.541 / 111223 AMU-II Oxytrace Operator’s Manual AMU-II Oxytrace...
  • Page 2 Swan Analytische Instrumente AG Studbachstrasse 13 8340 Hinwil Switzerland Internet: www.swan.ch E-mail: support@swan.ch Document Status AMU-II Oxytrace Operator’s Manual Title: A-96.150.541 Revision Issue December 2023 First edition © 2023, Swan Analytische Instrumente AG, Switzerland, all rights reserved. This manual applies to firmware V1.00 and higher.

  • Page 3: Table Of Contents

    AMU-II Oxytrace Transmitter ........
  • Page 4 AMU-II Oxytrace Maintenance ........... 31 6.1.

  • Page 5: Safety Instructions

    AMU-II Oxytrace Safety Instructions Operator’s Manual This document describes the main steps for instrument setup, opera- tion 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 Oxytrace 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 warnings 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 Oxytrace Safety Instructions Warning signs The warning signs in this manual have the following meaning: Electrical shock hazard Corrosive Harmful to health Flammable General warning Attention A-96.150.541 / 111223...

  • Page 8: General Safety Regulations

    AMU-II Oxytrace 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 parts Use only official Swan spare parts and disposables. If other parts are used during the normal warranty period, the manufacturer’s warranty...

  • Page 9: Product Description

    2.1. Description of the System Application The AMU-II Oxytrace is used to measure low levels of oxygen in high-purity water. Especially in power plant water cycles (e.g. feed- water), a very low level of oxygen is needed to prevent corrosion.
  • Page 10 AMU-II Oxytrace Product Description Signal Two signal outputs programmable for measured values (freely scalable, linear, bilinear, log) or as continuous control output (control outputs parameters programmable). Current loop: 0/4–20 mA Maximal burden: 510 Ω Relays Two potential-free contacts programmable as limit switches for measured values, controllers or timer with automatic hold function.

  • Page 11: Single Components

    AMU-II Oxytrace Product Description 2.2. Single Components 2.2.1 AMU-II Oxytrace 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 12: Sensor Oxytrace G

    AMU-II Oxytrace Product Description 2.2.2 Sensor OXYTRACE G Sensor for the measurement of dissolved oxygen in ultra pure water. Precise oxygen measuring cell with integrated temperature sensor and guard electrode for faster initial response time after maintenance. Technical data Clark oxygen electrode...

  • Page 13: Qv-Flow Pmma Otg

    AMU-II Oxytrace Product Description 2.2.3 QV-Flow PMMA OTG Flow cell Flow cell made of acrylic glass with integrated flow sensor. Sample temp. max. 50 °C Inlet pressure max. 1 bar Outlet pres- Pressure free sure Sample flow 6–25 l/h Process con- Swagelok connection for 1/4”...

  • Page 14: B-Flow Ss316L Otg

    AMU-II Oxytrace Product Description 2.2.4 B-Flow SS316L OTG Flow cell B-Flow SS316L OTG is made of stainless steel, comes without a flow sensor and can be used for higher operating pressures and temperatures. Operating -10 to +130 °C temp. Sensor max.

  • Page 15: Installation

    AMU-II Oxytrace 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-96.150.541 / 111223...
  • Page 16 AMU-II Oxytrace Installation Cutout 92 mm / 3.62" dimensions A-96.150.541 / 111223...

  • Page 17: Electrical Connections

    AMU-II Oxytrace 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 18: Power Supply

     Mains cable according to standards IEC 60227 or IEC 60245; flammability rating FV1  Mains equipped with an external switch or circuit-breaker – near the instrument – easily accessible to the operator – marked as interrupter for AMU-II Oxytrace 3.4. Sensor Terminals: see Connection diagram, p.

  • Page 19: Input

    AMU-II Oxytrace 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 20: Signal Output 1 And 2 (Current Outputs)

    AMU-II Oxytrace 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 21: Interface Options

    AMU-II Oxytrace Installation 3.9. Interface Options The functionality of the AMU-II Oxytrace 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 22 AMU-II Oxytrace 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 23: Usb Option

    AMU-II Oxytrace 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 24: Rs485 Option

    AMU-II Oxytrace 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 25: 3.10. Rs232 Interface

    AMU-II Oxytrace 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 26: Instrument Setup

    AMU-II Oxytrace Instrument Setup Instrument Setup 4.1. Establish Sample Flow 1 Open the flow regulating valve and wait until the flow cell is completely filled. 2 Switch on power. 3 Adjust the sample flow. 4.2. Programming Program all parameters for external devices (interface, recorders, etc.) and all parameters for instrument operation (limits, alarms).

  • Page 27: Operation

    AMU-II Oxytrace 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 28: Display

    AMU-II Oxytrace Operation 5.2. Display 15:20:18 0.15 12 l/h 23.0°C A RUN 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 29: Software Structure

    AMU-II Oxytrace 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 30: Changing Parameters And Values

    AMU-II Oxytrace 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 31: Maintenance

    AMU-II Oxytrace Maintenance Maintenance 6.1. Maintenance Table Weekly  Check sample flow. Monthly  If necessary, perform an air calibration. Half-  Clean Oxytrace G membrane with a soft tissue, Maintenance of the Oxygen Sensor, p. yearly Yearly  If necessary, replace filling electrolyte.

  • Page 32: Maintenance Of The Oxygen Sensor

    AMU-II Oxytrace Maintenance 6.3. Maintenance of the Oxygen Sensor WARNING Etching liquid The electrolyte is alkaline and caustic. It contains less than 1% of potassium hydroxide.  Do not ingest. Wear protective goggles and gloves during han- dling. Avoid contact with clothes.
  • Page 33 AMU-II Oxytrace Maintenance Swansensor Oxytrace G Thread Groove Guard electrode Anode Measuring head Cathode Sensor cap with membrane 3 Unscrew and remove the sensor cap [H] from the Swansensor Oxytrace G [A]. 4 Empty the remaining electrolyte. 5 Refill the sensor cap with fresh electrolyte.

  • Page 34: Clean Swansensor Oxytrace G And Flow Cell

    AMU-II Oxytrace Maintenance 6.3.2 Clean Swansensor Oxytrace G and Flow Cell Depending on the water quality, the Swansensor Oxytrace G and the flow cell will necessitate a cleaning. Before cleaning, proceed as described in Stop of Operation for Main- tenance, p.

  • Page 35: Calibration

    AMU-II Oxytrace Maintenance 6.4. Calibration The sensing part of the sensor must not be in direct contact with water! In the wet flow cell, the atmosphere will be saturated with water vapor. This atmosphere will produce the most accurate calibration results.
  • Page 36 AMU-II Oxytrace Maintenance 7 Place the electrode slightly tilted into Calibration 3.1.5 the flow cell, so that the sensor cap Place the electrode into rests on the rim for the O-ring. the wet flow cell at a slightly tilted angle.

  • Page 37: Zero Verification

    AMU-II Oxytrace Maintenance 6.5. Zero Verification 1 Calibrate the sensor according to chapter Calibration, p. 2 Prepare a 5% sodium sulfite solution with demineralized water. 3 Put the electrode into the sodium sulfite solution afterwards. As- sure that there are no air bubbles in front of the sensor.

  • Page 38: Quality Assurance Of The Instrument

    Every Swan online instrument is equipped with integrated, autono- mous quality assurance functions to survey the plausibility of each measurement. For the AMU-II Oxytrace these are:  continuous monitoring of sample flow  continuous monitoring of the temperature inside the transmitter...

  • Page 39: Activate Swan Quality Assurance Procedure

    AMU-II Oxytrace Maintenance Limits and intervals: 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% 4: User...

  • Page 40: Pre-Test

    AMU-II Oxytrace Maintenance 6.6.2 Pre-Test  AMI Inspector Oxygen: – Check certificate: Certificate not older than one year. – Check battery: The battery should be completely charged. Remaining operating time on display minimum 20 hours. – Sensor is in working condition ...
  • Page 41 AMU-II Oxytrace Maintenance Example As an example, the following picture shows the connection of the AMI Inspector Oxygen via T-fitting to the process monitor. AMI Inspector Oxygen Sample outlet Sample inlet Flow cell of reference instrument T-fitting Flow cell of online instrument 1 Stop sample flow to the online instrument by closing the appropri- ate valve, e.g.

  • Page 42: Carry Out Comparison Measurement

    AMU-II Oxytrace Maintenance 6.6.4 Carry Out Comparison Measurement 1 Navigate to menu <Maintenance>/<Quality Assurance>. 2 Follow the dialog on the display. 3 Carry out pre test preparations Quality Assurance 3.5.5 Connect instruments. - Carry out preparations Regulate sample flow to 10 l/h us- - Install Inspector ing the appropriate valve.

  • Page 43: Completion Of The Measurement

    AMU-II Oxytrace Maintenance 6.6.5 Completion of the Measurement 1 Stop sample flow. 2 Close the flow regulating valve of the AMI Inspector Oxygen. 3 Disconnect the AMI Inspector Oxygen from the sample line. 4 Switch off the AMI Inspector Oxygen.

  • Page 44: Error List

    AMU-II Oxytrace 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 45 AMU-II Oxytrace Error List Error Description Corrective action – check process E001 Oxygen Alarm high – check programmed value, 5.3.1.1.1, p. 62 – check process E002 Oxygen Alarm low – check programmed value, 5.3.1.1.25, p. 62 – check process E003 Saturation Alarm high –...
  • Page 46 AMU-II Oxytrace Error List Error Description Corrective action – check case/environment temperature E013 Case Temp. high – check programmed value, 5.3.1.5.1, p. 63 – check case/environment temperature E014 Case Temp. low – check programmed value, 5.3.1.5.2, p. 63 – check control device or programming...

  • Page 47: Program Overview

    AMU-II Oxytrace 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 48: Diagnostics (Main Menu 2)

    AMU-II Oxytrace Program Overview 8.2. Diagnostics (Main Menu 2) Identification Desig. AMU-II Oxytrace * Menu numbers 2.1* Version 1.00-11/23 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 49: Maintenance (Main Menu 3)

    AMU-II Oxytrace Program Overview 8.3. Maintenance (Main Menu 3) Calibration Calibration 3.1.5 * Menu numbers 3.1* Service Electrolyte Last filling 3.2* 3.2.1* Remaining amount Remaining time New Filling 3.2.1.5* Simulation 3.2.1* Alarm Relay 3.3* 3.2.2* Relay 1 3.2.3* Relay 2 3.2.4*...

  • Page 50: Operation (Main Menu 4)

    AMU-II Oxytrace Program Overview 8.4. Operation (Main Menu 4) Sensors Filter Time Const. 4.1.1* * Menu numbers 4.1* 4.1.2* Hold after Cal. Relay Contacts Alarm Relay Alarm Oxygen 4.2.1.1.1* Alarm High 4.2* 4.2.1* 4.2.1.1* 4.2.1.1.25* Alarm Low 4.2.1.1.35* Hysteresis Delay 4.2.1.1.45*...

  • Page 51: Installation (Main Menu 5)

    AMU-II Oxytrace Program Overview 8.5. Installation (Main Menu 5) Sensors Miscellaneous 5.1.1.1* * Menu numbers Flow 5.1* 5.1.1* Offset 5.1.1.2* Quality Assurance 5.1.2.1* Level 5.1.2* Signal Outputs Signal Output 1/2 5.2.1.1 - 5.2.2.1* Parameter 5.2* 5.2.1* - 5.2.2* 5.2.1.2 - 5.2.2.2*...
  • Page 52 AMU-II Oxytrace Program Overview Miscellaneous 5.4.1* * Menu numbers 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* Sample ID Interface Protocol 5.5.1* (only with RS485 5.5* 5.5.21* interface) Device Address 5.5.31*...

  • Page 53: Program List And Explanations

    AMU-II Oxytrace 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 54 AMU-II Oxytrace Program List and Explanations 2.2.1.4 Cal. History Review the diagnostic values of the last calibration of the oxygen sensor. Max. 64 data records are memorized. Number: Calibration counter. Date, Time: Date and time of the calibration. Sat. Current: Saturation current at that time of calibration.

  • Page 55: Maintenance

    AMU-II Oxytrace Program List and Explanations 3 Maintenance 3.1 Calibration 3.1.1 Start a calibration and follow the instructions on the screen. Dis- played values are saturation in % and the saturation current in µA. The indication bar shows the progress. Detailed explanation see Cal- ibration, p.

  • Page 56: Operation

    AMU-II Oxytrace Program List and Explanations 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. Range: 5–300 Sec 4.1.2...

  • Page 57: Installation

    AMU-II Oxytrace Program List and Explanations 5 Installation 5.1 Sensors 5.1.1 Miscellaneous 5.1.1.1 Flow: If a flow cell without flow measurement (e.g. B-Flow) is used, choose none. With flow measurement select Q-Flow 5.1.1.2 O2 Offset: Manual, small correction of the offset.
  • Page 58 AMU-II Oxytrace Program List and Explanations 5.2.1.3 Function: Define if the signal output is used to transmit a process val- ue or to drive a control unit. Available functions are:  Linear, bilinear or logarithmic for process values. As process values, p. 58 ...
  • Page 59 AMU-II Oxytrace 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: Oxygen Range low: 0.00 ppb –20.00 ppm Range high: 0.00 ppb –20.00 ppm Parameter: Temperature Range low: -30 to + 130 °C...
  • Page 60 AMU-II Oxytrace 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 61 AMU-II Oxytrace Program List and Explanations 5.2.1.43 Control Parameters: if Parameter = Sample flow 5.2.1.43.12 Setopint: Range: 0–50 l/h 5.2.1.43.22 P-Band: Range: 0–50 l/h 5.2.1.43 Control Parameters: if Parameter = Saturation 5.2.1.43.13 Setopint: Range: 0–200% 5.2.1.43.23 P-Band: Range: 0–200% 5.2.1.43.3...
  • Page 62 AMU-II Oxytrace Program List and Explanations 5.3.1.1 Alarm oxygen 5.3.1.1.1 Alarm High: If the measured value rises above the alarm high value, the alarm relay is activated and E001 is displayed in the message list. Range: 0.00 ppb –20.00 ppm 5.3.1.1.25...
  • Page 63 AMU-II Oxytrace Program List and Explanations 5.3.1.4 Alarm Saturation 5.3.1.4.1 Alarm High: If the measured value rises above the alarm high value, the alarm relay is activated and E003, is displayed in the message list. Range: 0.00 –200% 5.3.1.4.25 Alarm Low: If the measured value falls below the alarm low value, the alarm relay is activated and E004 is displayed in the message list.
  • Page 64 AMU-II Oxytrace Program List and Explanations 5.3.2.1 Function = Limit upper/lower: When the relays are used as upper or lower limit switches, program the following: 5.3.2.20 Parameter: choose one of the following process values  Oxygen  Temperature  Sample Flow ...
  • Page 65 AMU-II Oxytrace Program List and Explanations 5.3.2.22 Parameter: choose one of the following process values  Oxygen  Temperature  Sample Flow  Saturation 5.3.2.32 Settings Choose the respective actuator:  Time proportional  Frequency  Motor valve Actuator = Time proportional Examples of metering devices that are driven time proportional are solenoid valves, peristaltic pumps.
  • Page 66 AMU-II Oxytrace Program List and Explanations 5.3.2.32.4 Control Parameters: Range for each Parameter same as 5.2.1.43, p. 60 5.3.2.1 Function = Timer The relay will be activated repetitively depending on the programmed time scheme. 5.3.2.24 Mode: Operating mode (interval, daily, weekly) 5.3.2.24...
  • Page 67 AMU-II Oxytrace Program List and Explanations 5.3.2.24 daily The relay contact can be activated daily, at any time of a day. 5.3.2.341 Start time: to set the start time proceed as follows: 1 Press [Enter], to set the hours. 2 Set the hour with the [ ] or [ ] keys.
  • Page 68 AMU-II Oxytrace Program List and Explanations 5.3.4 Input: The functions of the relays and signal outputs can be defined depending on the position of the input contact, i.e. no function, closed or open. 5.3.4.1 Active: Define when the input should be active: Input is never active.
  • Page 69 AMU-II Oxytrace Program List and Explanations 5.4.2 Set defaults: Reset the instrument to factory default values in three different ways:  Calibration: Sets calibration values back to default. All other values are kept in memory.  In parts: Communication parameters are kept in memory. All other values are set back to default values.

  • Page 70: Default Values

    AMU-II Oxytrace Default Values Default Values Operation: Sensors: Filter Time Const.: ................10 s Hold after Cal.:................300 s Alarm Relay .................same as in Installation Relay 1/2 .................same as in Installation Input .................same as in Installation Logger: Logger Interval:................ 30 min Clear Logger:.................. no...
  • Page 71 AMU-II Oxytrace Default Values Case temp. high:................ 65 °C Case temp. low: ................0 °C Relay 1 Function: ................limit upper Parameter: ................Oxygen Setpoint:................10.00 ppm Hysteresis: ................100 ppb Delay:................... 30 s Relay 2 Function: ................limit upper Parameter: ..............Temperature Setpoint:..................
  • Page 72 AMU-II Oxytrace Default Values Miscellaneous Language:................English Set default: ..................no Load firmware:................no Password:..............for all modes 0000 Sample ID:................- - - - - - - - Interface Protocol: ............... Hyperterminal A-96.150.541 / 111223...

  • Page 73: Notes

    AMU-II Oxytrace Notes Notes A-96.150.541 / 111223...
  • Page 74 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 Oxytrace...

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