1. Manuals
  2. Brands
  3. TPS Manuals
  4. Measuring Instruments
  5. pH Cube
  6. Manual

TPS pH Cube Manual

Ph-orp-temperature meter
Hide thumbs Also See for pH Cube:
Table of Contents

Advertisement

Quick Links

Congratulations !
You
have
purchased
instrumentation. We trust that your new pH Cube will give you many years of
reliable service.
The pH Cube 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 pH Cube. It also contains a full listing of all of the items that you should
have received with your pH Cube. 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 pH Cube,
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
ABN 30 009 773 371
Unit 6 / 253 Leitchs Road
Brendale, QLD,
Australia, 4500
Phone
: (07)
International
: 61 7
Fax
: (07)
International
: 61 7
Email
: tps@tps.com.au
Web
:
www.tps.com.au
the
latest
32 058 027
32 058 027
3808 4871
3808 4871
in
benchtop
Handbook Version : 1.3
Date
pH-ORP-Temperature
Model pH Cube
pH-ORP-Temp.
Meter
: 12-Dec-11

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the pH Cube and is the answer not in the manual?

Questions and answers

Related Manuals for TPS pH Cube

Summary of Contents for TPS pH Cube

  • Page 1 The introduction has a diagram and explanation of the display and controls of the pH Cube. It also contains a full listing of all of the items that you should have received with your pH Cube. Please take the time to read this section, as it explains some of items that are mentioned in subsequent sections.

  • Page 2: Table Of Contents

    Page 2 Contents Introduction ....................3 pH Cube Front Panel and Controls ..............3 pH Cube Side Panel and Connectors ..............4 Unpacking Information ..................5 Specifications ....................5 Operating Modes ..................6 pH Calibration ....................7 Calibration Procedure ..................7 Calibration Notes ....................

  • Page 3: Introduction

    Page 3 1. Introduction 1.1 pH Cube Front Panel and Controls Display  12.7mm LED display with mode enunciator. Function Switch  Switches between pH, ORP/mV and Temperature modes. See section 2. Calibrate Control  Used for pH asymmetry calibration in pH7.00 or pH6.86 buffer. See section Slope Control ...

  • Page 4: Ph Cube Side Panel And Connectors

    Used for temperature calibration. See section 5. 12V DC Power Connector  Used to connect 12V AC/DC Adaptor. The pH Cube can run off any 12V DC source with at least 200mA output. The 12V DC connector has a positive tip.

  • Page 5: Unpacking Information

    Page 5 1.3 Unpacking Information Before using your new pH Cube, please check that the following accessories have been included: Part No pH Cube pH-ORP-Temperature Instrument 121122 Combination pH Sensor 121207 Temperature/ATC Sensor 121245 pH7.00 Buffer, 200mL 121387 pH4.01 Buffer, 200mL...

  • Page 6: Operating Modes

    Page 6 2. Operating Modes Switch the function switch to any one of the following three operating modes. Note the mode enunciator – P for pH, E for EMF (ORP/mV), and C for Function Switch Display example Position ORP/mV Temp...

  • Page 7: Ph Calibration

    Page 7 3. pH Calibration 3.1 Calibration Procedure Switch the pH Cube to pH mode (see section 2). Plug the pH sensor into the Sensor socket and the temperature sensor into the Temp socket. Ensure that temperature has already been calibrated or manually set (see sections 5.1 and 5.3).

  • Page 8: Calibration Notes

    Page 8 When the reading has stabilised, adjust the Calibrate control until the display shows the value of the buffer at the current temperature. For TPS buffers, this is shown on the bottle. Refer also to the table in section 7.1.

  • Page 9: Temperature Calibration

    When the reading has stabilised, adjust the Temp Cal. control until the display shows the same temperature as the mercury thermometer. The Temperature function of the pH Cube is now calibrated and is ready for use. 5.2 Calibration Notes Temperature does not need to be recalibrated unless the Temperature sensor is replaced.

  • Page 10: Troubleshooting

    Page 10 6. Troubleshooting 6.1 pH and ORP/mV Troubleshooting Symptom Possible Causes Remedy Meter displays pH reading is over-ranged. pH sensor not connected or “-1. " as a faulty. Replace sensor if reading. necessary. Asymmetry 1. Reference junction blocked. Clean reference by immersing calibration with (See section 7.3) the probe in hot water (60C)

  • Page 11: Temperature Troubleshooting

    Page 11 pH and ORP/mV Troubleshooting, continued… Unstable readings. 1. Reference junction blocked. Clean reference junction as per instructions supplied with the sensor. 2. Glass bulb not clean. Clean glass bulb instructions supplied with the sensor. 3. Bubble in glass bulb. Flick the sensor to remove bubble.

  • Page 12: Appendices

    Page 12 7. Appendices 7.1 pH Buffer Values Vs Temperature The following table lists the pH values of some popular buffers, with respect to Temperature. Any pH meter should always be calibrated to the correct value of the buffers at the current solution temperature. Buffer temperature should not exceed 50oC during calibration.

  • Page 13: Ph Sensor Fundamentals

    Page 13 7.2 pH Sensor Fundamentals A combination pH sensor is two sensors in one. The sensing membrane is the round or spear shaped bulb at the tip of the sensor. This produces a voltage that changes with the pH of the Solution. This voltage is measured with respect to the second part of the sensor, the reference section.
  • Page 14 Page 14 7.2.2 The Slope of a pH Sensor As mentioned above, a pH sensor produces 0 mV output at around 7.00 pH. As the pH goes up, an “ideal” pH sensor produces -59mV/pH unit at 25 C As the pH goes down, an ideal pH sensor produces +59mV/pH unit.
  • Page 15 Page 15 7.2.3 Temperature Compensation The slope of a pH sensor (section 7.2.2) is affected by temperature. This effect is compensated for either by using an Automatic Temperature Compensation (ATC) sensor or by entering the sample temperature manually. Figure 7-3 shows the slope of a pH sensor at various temperatures.

  • Page 16: Warranty

    Please read service details on our ‘Service’ web page first: http://www.tps.com.au/service.htm TPS Pty Ltd has a reputation for prompt and efficient service. If you feel that this equipment is in need of repair, please re-read the manual. Sometimes, instruments are received for "repair" in perfect working order. This can occur where batteries simply require replacement or re-charging, or where the sensor simply requires cleaning or replacement.
  • Page 17 If you decline to have the equipment repaired, the complete instrument will be returned to you freight paid, not serviced. TPS Pty Ltd has only one service location, which is located at our factory in Brisbane: Service Department...

Table of Contents