Thermo Scientific AquaSensors AquaChlor User manual

Thermo Scientific AquaSensors™
AquaChlor™Free Chlorine
Monitor
User Guide

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Thermo Scientific AquaSensors™AquaChlor™Free Chlorine Monitor User Guide 1
Preface
This instruction manual serves to explain the use of the Thermo Scientific AquaSensors Free Chlorine
Measurement System and is written to cover as many applications as possible. Please do not hesitate to
contact Thermo Fisher Scientific or an authorized representative with questions or concerns.
The information presented in this instruction manual is subject to change without notice as improvements are
made, and does not represent any commitment whatsoever on the part of Thermo Fisher Scientific.
Thermo Fisher Scientific cannot accept any responsibility for damage or malfunction of the sensor due to
improper use.
Contact Information
To contact Thermo Scientific AquaSensors Technical Support:
Within the United States call 1.800.225.1480 or fax [phone].
Outside the United States call 978.232.6000 or fax [phone].
In Europe, the Middle East and Africa, contact your local authorized dealer.
Visit us on the web at www.thermo.com/processwater

Thermo Scientific AquaSensors™AquaChlor™Free Chlorine Monitor User Guide 2
Safety Information
The Thermo Scientific AquaSensors Free Chlorine Measurement
System shall be installed and operated only in the manner specified.
Only a skilled, trained or authorized person should carry out
installation, setup and operation of the sensor system.
Before using the system, make sure that is connected as specified.
Failure to do so may result in permanent damage to the system of its
components.
Protection against electric shock will be achieved only by observance
of the corresponding installation rules.

Thermo Scientific AquaSensors™AquaChlor™Free Chlorine Monitor User Guide 3
TABLE OF CONTENTS
1. INTRODUCTION...............................................................................................................................4
1.1. GENERAL INFORMATION.................................................................................................................... 4
1.2. INTENDED USE.................................................................................................................................... 5
2. PRODUCT DESCRIPTION.............................................................................................................. 6
2.1. SENSOR CARE AND START-UP............................................................................................................ 9
2.2. SENSOR INSTALLATION............................................................................................................... 11
3. MOUNTING HARDWARE ............................................................................................................ 12
3.1. UNION TEE....................................................................................................................................... 13
3.2. AQUACHLOR™-CHLORINE SAMPLE CHAMBER ............................................................................. 14
4. WIRING.............................................................................................................................................17
5. AV38 LOCAL DISPLAY INTERFACE ........................................................................................19
5.1. MEASURE SCREEN OVERVIEW......................................................................................................... 19
5.2. MENU STRUCTURE........................................................................................................................... 21
5.3. 1-POINT (SPAN)CALIBRATION......................................................................................................... 24
5.4. TEMPERATURE CALIBRATION .......................................................................................................... 27
5.5. CONFIGURATION.............................................................................................................................. 29
5.6. CHLORINE CONFIG (PHCOMPENSATION)......................................................................................... 30
5.7. ANALOG OUTPUT OVERVIEW .......................................................................................................... 32
5.8. RELAY FUNCTION OVERVIEW.......................................................................................................... 32
6. AQUACOMM™ INTERFACE.......................................................................................................33
7. DIRECT PLC CONNECTIONS..................................................................................................... 34
8. SPECIFICATION............................................................................................................................. 35
9. FREE CHLORINE SYSTEM ORDER MATRIX AND ACCESSORIES..................................36
1. LIMITED WARRANTY.................................................................................................................. 38
10. TERMS AND CONDITIONS.......................................................................................................... 39

Thermo Scientific AquaSensors™AquaChlor™Free Chlorine Monitor User Guide 4
1. INTRODUCTION
1.1. General Information
The product is designed for continuous use in industrial process applications and complies with safety
regulations currently in force. Improper use could lead to hazards for the user or a third-party, and/or adverse
effects to the plant or other equipment.
Thermo Fisher Scientific does not accept any liability for damage that may arise if information in this
manual is not followed. Therefore, the operating instructions and specifications must be read and
understood by all persons involved in installation and operation of this equipment.
This manual identifies safety instructions and additional information by means of the following symbols:
This symbol draws attention to safety instructions and warnings of potential danger,
which if neglected, could result in injury to persons and/or damage to property.
This symbol identifies additional information and instructions, which if neglected, could
lead to inefficient operation and possible loss of production.
It is recommended that this manual be made accessible to everyone who may need it as a reference.
Please contact Thermo Fisher Scientific or an authorized representative with any questions.

Thermo Scientific AquaSensors™AquaChlor™Free Chlorine Monitor User Guide 5
1.2. Intended use
The Free Chlorine Measurement Systems are used for continuous monitoring of free chlorine in
applications where the chlorine concentration is between 0.05 ppm and 5ppm or 0.05 ppm and 20 ppm.
The systems also measure water temperature.
Any other use, or use not mentioned here, that is incompatible with the technical specifications is deemed
inappropriate. The operator is solely responsible for any damage arising from such use.
Other prerequisites for appropriate use include:
 Observing the instructions, notes and requirements set out in this instruction manual.
 Observing all local safety regulations.
 Observing all warnings and cautions in the documentation regarding all products used in this
measurement system, including the sensor, mounting hardware, AV38 electronics and
cabling.
 Observing the prescribed environmental and operational conditions.
 Observing chemical compatibility with all wetted materials.
1.3. Safety Instructions
The Chlorine Measurement System should be installed and operated only by
personnel familiar with the sensor and qualified for such work.
A defective Chlorine Measurement System should be returned to Thermo Fisher
Scientific for repair or replacement. Contact Thermo Fisher Scientific to obtain a
Return Material Authorization (RMA) number.
No modifications to the Chlorine Measurement System are allowed. The
manufacturer/supplier accepts no responsibility for damage caused by unauthorized
modifications. The risk is borne entirely by the user.
1.4. Removal from Service / Correct Disposal of the Chlorine Measurement System
Removal from Service
 Disconnect the cable wiring from the controller terminal block.
 Remove the Chlorine Measurement System from the mounting hardware.
Correct Disposal of Unit
 When the Chlorine Measurement System is taken out of service, observe the local
environmental regulations for correct disposal.

Thermo Scientific AquaSensors™AquaChlor™Free Chlorine Monitor User Guide 6
2. PRODUCT DESCRIPTION
The Free Chlorine Measurement Systems are used for continuous monitoring of free chlorine in
applications where the chlorine concentration is between 0.05 ppm and 5 ppm or 0.05 ppm and 20 ppm.
The system also measures temperature from 0°C to 100°C.
The sensor head is pre-calibrated for span and the zero is factory set. The sensor retains calibration
values and does not require a new calibration when the system is connected to a new AV38 Display Unit,
PC, or PLC.
Any communications protocol that Thermo Fisher Scientific supports can be configured in this system by
plugging in one of many types of cabled communications adapters. All Thermo Scientific AquaSensors
communications adapters support measurement, calibration, configuration and diagnostics functions,
which can be accessed locally or remotely without an analyzer or controller electronics box.
The sensor in this system uses an amperometric measurement method with a gold cathode and a silver
anode. The electrolyte and membrane are easily replaced with a pre-stretched screw-on membrane cap.
Measurements are stable below 5 pH and are maintained in the pH window between 5 pH and 9 pH.
When pH compensation is used in conjunction with an AV38 local display, Hypochlorous acid or free
chlorine concentrations are automatically available when a chlorine sensor is connected.
•Modbus RTU
• Modbus 232
• Modbus TCP
• DeviceNet
• CANopen
• Ethernet/IP
• PCCC
• Web Browser
• USB
• RS-232
Plug-in Communications Adapters
•Retained calibration
• Screw-on membrane cartridge
• Simple electrolyte fill procedure
Plug-in Free Chlorine Sensor Head

Thermo Scientific AquaSensors™AquaChlor™Free Chlorine Monitor User Guide 7
The free chlorine system can be connected directly to a digital network, an AV38 local display or a
personal computer running AquaComm™ software. The following schematic illustrates:
Communications Suggested Application Standard Interface Reference
USB ASCII Laboratory PC, Field Laptop AquaComm™, Hyper Terminal® USB Adapter Manual
RS-232 ASCII Laboratory PC AquaComm™, Hyper Terminal® ASCII Commands and Responses detailed
in the appendix of the DataStick manual.
Modbus RTU AV38 Local Display
PLC with Modbus Network
AV38 Local Display
Modbus PLC Tools
AV38 Local Display Manual
Modbus Communications Manual
DeviceNet PLC with DeviceNet Network DeviceNet PLC Tools DeviceNet Communications Manual
CANbus PLC with CANbus Network CANbus PLC Tools CANbus Communications Manual
Ethernet/IP DeviceNet over Ethernet PoE Switch with DeviceNet Tools Ethernet Manual
PCCC Allen-Bradley SL/C 500 Series PoE Switch with PCCC Tools Ethernet Manual
Modbus/TCP Modbus over Ethernet PoE Switch with Modbus Tools Ethernet Manual
TCP/IP PC PoE Switch with Internet Explorer Ethernet Manual
Profibus DP connections are made through Thermo Scientific AquaSensors Profibus DP gateway which
connects up to 30 DataSticks with integral Modbus RTU comms adapters.

Thermo Scientific AquaSensors™AquaChlor™Free Chlorine Monitor User Guide 8
The sensor is designed for continuous use and has 1-inch NPT mounting threads for union tee and sample
chamber hardware. The parts of the sensor system are show here:
Product Highlights:
 0.05 to 5 ppm and 0.05 to 20 ppm Measurement Ranges
 Calibration stored in Sensor (Does not require recalibration after connection to
Analyzer/Controller)
 0.01 ppm Resolution
 Fast Response
 Simple membrane and electrolyte replacement
 Provides measurement, calibration, configuration and diagnostic functions without
Analyzer/Controller
 Works with AV38 for local display, current output data reporting, and relay control
 Temperature measurement included
 Can be connected to Modbus, DeviceNet, Ethernet, USB, RS-232 and CANopen networks.