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Congratulations !
You have purchased the latest in benchtop Conductivity-TDS-Temperature
instrumentation. We trust that your new 901-C will give you many years of
reliable service.
The 901-C is a breeze to operate. This manual has been designed to help you get
started, and also contains some handy application tips. If at any stage you require
assistance, please contact either your local TPS representative or the TPS factory
in Brisbane.
The manual is divided into the following sections:
1. Table of Contents
Each major section of the handbook is clearly listed. Sub-sections have also
been included to enable you to find the information you need at a glance.
2. Introduction
The introduction has a diagram and explanation of the display and controls of
the 901-C. It also contains a full listing of all of the items that you should
have received with your 901-C. Please take the time to read this section, as it
explains some of items that are mentioned in subsequent sections.
3. Main Section
The main section of the handbook provides complete details of the 901-C,
including operating modes, calibration, troubleshooting, specifications, and
warranty terms.
4. Appendices
Appendices containing background information and application notes are
provided at the back of this manual.
TPS Pty Ltd
4 Jamberoo Street
Springwood, Brisbane,
Australia, 4127
Phone
: (07) 32 900 400
International : 61 7 32 900 400
Fax
: (07) 3808 4871
International : 61 7 3808 4871
Email
:
tps@tps.com.au
Web Site
: www.tps.com.au
Model 901-C
Conductivity-TDS-
Temp. Meter
Handbook Version : 1
Date
: 30-Jun-2000
Author
: MS
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Summary of Contents for TPS 901-C
- Page 1 We trust that your new 901-C will give you many years of reliable service. The 901-C is a breeze to operate. This manual has been designed to help you get started, and also contains some handy application tips. If at any stage you require assistance, please contact either your local TPS representative or the TPS factory in Brisbane.
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Page 2: Table Of Contents
Page 1 Contents Introduction ....................2 1.1 901-C Display and Controls ................2 1.2 901-C Rear Panel Connectors................2 1.3 901-C Front Panel ..................... 3 1.4 Unpacking Information ..................4 1.5 Specifications....................5 Operating Modes..................8 Conductivity Calibration ................9 3.1 Calibration Procedure.................. -
Page 3: Introduction
Page 2 1. Introduction 1.1 901-C Display and Controls 1.2 901-C Rear Panel Connectors... -
Page 4: 901-C Front Panel
Displays Conductivity or TDS plus Temperature simultaneously. • User friendly text prompts and error messages. • Serial number is displayed when the 901-C is switched on. • Switches between the various display and optional RS232 modes. See section 2. •... -
Page 5: Unpacking Information
Page 4 1.4 Unpacking Information Before using your new 901-C, please check that the following accessories have been included: Part No 901-C Conductivity-TDS-Temp Meter .....126125 K=1/ATC Conductivity Sensor.........122226 Temperature/ATC Sensor .........121245 2.76mS/cm Conductivity Standard, 200mL....122306 2.0 ppK TDS Standard, 200mL.........122307 AC/DC Power Adaptor..........130044... -
Page 6: Specifications
Page 5 1.5 Specifications Ranges Resolution Accuracy Conductivity k=0.1 Sensor ±0.5% of full 0 to 2.000 µS/cm 0.001 µS/cm scale of 0 to 20.00 µS/cm 0.01 µS/cm selected 0 to 200.0 µS/cm µS/cm range at 25 0 to 2000 µS/cm µS/cm k=1.0 Sensor 0 to... - Page 7 Page 6 Additional Conductivity and TDS Specifications Sensor Type.......Glass body with two platinised platinum plates. In-built ATC. Temperature Compensation ..Automatic, 0 to 100 Calibration ........Automatic zero and span calibration. Standard Recognition ....Conductivity 14.94 µS/cm, 73.90 µS/cm, 150.0 µS/cm, 717.8 µS/cm, 1,413 µS/cm, 2.76 mS/cm, 6.67 mS/cm, 12.9 mS/cm, 24.8 mS/cm, 58.0 mS/cm, 111.9 mS/cm 69.5 ppM, 2.00 ppK, 8.0 ppK, 36.0 ppK...
- Page 8 Page 7 General Specifications RS232 Output......300, 9600 or 19200 baud. (optional) 8 bits, No Parity, 1 stop bit, XON/XOFF Protocol. Recorder Output .......Cond : 0 to 2000 Counts for 0 to 2000 mV (optional) ie. 2.76 mS/cm = 276 mV TDS : 0 to 1000 Counts for 0 to 1000 mV ie.
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Page 9: Operating Modes
Page 8 2. Operating Modes Press the key to select the desired operating mode. The sequence is shown in the following table… 2.76mS 25.0 Conductivity plus Temperature Mode Conductivity data is shown on the left and Temperature data is shown on the right. -
Page 10: Conductivity Calibration
1 second to calibrate. The ∗ ∗ will now be replaced by a decimal point if calibration was successful. The 901-C is now calibrated for Conductivity and is ready for use in this mode. Discard the used samples of standard. -
Page 11: Calibration Notes
3. Conductivity and TDS calibration data is stored separately in memory. Ensure that the 901-C has been correctly calibrated for the mode in which it will be used. The 901-C does not require re-calibration when alternating between Conductivity and TDS modes, providing the instrument has been correctly calibrated for both. -
Page 12: Calibration Messages
Page 11 3.3 Calibration Messages If a Zero calibration has been successfully performed, the 901-C will display the Zero of the sensor and then return to Conductivity mode. For example… Zero OK, 0.1% Zero OK, 0.1% If a Span calibration has been successfully performed, the 901-C will display the k factor of the sensor and then return to Conductivity mode. -
Page 13: Tds Calibration
1 second to calibrate. The ∗ ∗ will now be replaced by a decimal point if calibration was successful. The 901-C is now calibrated for TDS and is ready for use in this mode. Discard the used samples of standard. -
Page 14: Calibration Notes
3. Conductivity and TDS calibration data is stored separately in memory. Ensure that the 901-C has been correctly calibrated for the mode in which it will be used. The 901-C does not require re-calibration when alternating between Conductivity and TDS modes, providing the instrument has been correctly calibrated for both. -
Page 15: Calibration Messages
Page 14 4.3 Calibration Messages If a Zero calibration has been successfully performed, the 901-C will display the Zero of the sensor and then return to TDS mode. For example… Zero OK, 0.1% Zero OK, 0.1% If a Span calibration has been successfully performed, the 901-C will display the k factor of the sensor and then return to TDS mode. -
Page 16: Temperature Calibration
Page 15 5. Temperature Calibration 5.1 Calibration Procedure Switch the 901-C on and select Temperature mode (see section 2). Plug the temperature sensor (Part No 121245) into the Temp. socket. Place the sensor alongside a good quality mercury thermometer into a beaker of room temperature water. -
Page 17: Calibration Messages
The " ∗ ∗ " is replaced by a decimal point in the Temperature reading to indicate that Temperature is correctly calibrated. If a temperature calibration has failed, the 901-C will display the failed offset value of the sensor before returning to Temperature mode. For example…... -
Page 18: Rs232 Port
6.2 Sending Readings to the RS232 Port The 901-C can send readings to the RS232 port at a pre-set rate, in seconds. To set this Send Rate… Select RS232 Send Rate mode (see section 2). -
Page 19: Rs232 Configuration
Information on how to use the software is provided in the README files on the diskette. 6.5 Commands The following commands can be sent from a PC to the 901-C. Note that <cr> denotes carriage return and <lf> denotes a line feed. Action... - Page 20 Temperature unit description, left justified. (“s s ” is one space.) Notes: 1. +OVR or –OVR is sent when the Data is over-range. 2. BUSY<cr> is sent when the 901-C is Busy (ie in calibration, Baud Rate mode, Send Rate mode etc.) or when data is not available.
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Page 21: Recorder Output Option
Page 20 7. Recorder Output Option This section is applicable when the optional analogue recorder output is fitted. The recorder output depends on the currently selected display mode, as detailed below… Display Mode Parameter sent to Recorder Port Conductivity & Temperature Conductivity TDS and Temperature Temperature only... -
Page 22: Rs232 / Recorder Output Socket Connections
Page 21 7.1 RS232 / Recorder Output Socket Connections Pin No Connection Chassis Receive RS232 Data Transmit RS232 Data +10 V DC Power Output Ground Recorder Output Signal Recorder Output Common No Connection No Connection... -
Page 23: Selecting K=10 Or K=0.1 Sensors
The 901-C automatically recognises a k=1.0 sensor. The 901-C does not automatically recognise k=0.1 or k=10 sensors. When a k=0.1 or k=10 sensor is used, the 901-C must be manually set to the correct k factor before use. The following procedure describes how to select a k=0.1 or k=10 sensor. -
Page 24: Initialising The 901-C
Page 23 9. Initialising the 901-C If the calibration settings of the 901-C exceed the allowable limits, the unit may need to be initialised to factory default values. This action may be required if the sensor is replaced, or when the unit repeatedly fails to calibrate. -
Page 25: Troubleshooting
Page 24 10. Troubleshooting 10.1 General Error Messages Error Message Possible Causes Remedy Not Factory Cal. The EEPROM chip which Switch the 901-C off, wait contains factory seconds, (displayed at turn-on) calibration information has switching on again. failed. If message persists, then the unit must be returned to TPS for service. -
Page 26: Conductivity And Tds Troubleshooting
Page 25 10.2 Conductivity and TDS Troubleshooting Symptom Possible Causes Remedy Unit fails to Calibration settings outside of Initialise the unit. See section 9. calibrate, even with allowable limits due to previous new electrode. failed calibration. Unit attempts Span Electrode has Zero error. Thoroughly rinse electrode in calibration instead distilled water and allow to... -
Page 27: Temperature Troubleshooting
Page 26 Conductivity and TDS Troubleshooting, continued… Inaccurate readings, 1. Electrode may have a build- Clean electrode, as per the even when up of dirt or oily material on instructions detailed in section calibration is electrode plates. 11.1. successful. 2. Platinum-black coating has Electrode requires worn off. -
Page 28: Appendices
11.1 Care, Cleaning and Maintenance of Conductivity Sensors 11.1.1 Care of Conductivity Sensors The conductivity section of the electrode supplied with your 901-C consists of two platinum plates that are plated with a layer of “platinum-black”. This is quite a soft layer and is required for stable, accurate measurements. In time, the platinum-black layer may wear off in some applications, at which time the electrode will require replatinising (see section 11.2). -
Page 29: Replatinising Conductivity Sensors
11.2 Replatinising Conductivity Sensors There are several ways to replatinise Conductivity electrodes. The simplest way is to return the electrode to the TPS factory. We can fully clean the electrode, replatinise it and test all aspects of its performance. An automatic replatiniser is available from TPS, along with replatinising solution. -
Page 30: Warranty
TPS Pty. Ltd. has a fine reputation for prompt and efficient service. In just a few days, our factory service engineers and technicians will examine and repair your equipment to your full satisfaction. - Page 31 Page 30 Please check that the following is enclosed with your equipment: • Your Name and daytime phone number. • Your company name, ORDER number, and return street address. • A description of the fault. (Please be SPECIFIC.) (Note: "Please Repair" does NOT describe a fault.) Your equipment will be repaired and returned to you by air express where possible.
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