What to do if EEPROM Write Fail appears on my TPS 901-PH?
If your TPS Multimeter displays "EEEEPPRROOMM WWrriitteeFFaaiill then: CCoonnttaacctt FFaaccttoorryy" during calibration or setup, it means that the storage of user calibration settings to the EEPROM has failed. Turn the unit off, wait 10 seconds, and then switch it back on. Attempt the calibration/setup again. If the message persists, the unit must be returned to TPS for service.
What does Not Factory Cal mean on my TPS 901-PH Multimeter?
If your TPS Multimeter displays "NNoott FFaaccttoorryy CCaall.." when you turn it on, it means that the EEPROM chip, which contains the factory calibration information, has failed. Switch the 901-PH off, wait 10 seconds, and try switching it on again. If the message persists, then the unit must be returned to TPS for service.
Why are the readings on my TPS 901-PH unstable?
If you are experiencing unstable readings on your TPS Multimeter, there could be several reasons: * Static charge or electrical noise from nearby electrical equipment may be causing interference. In this case, fit a solution earth rod to the Guard connector. * A blocked reference junction. Clean the reference junction as per instructions supplied with the sensor. * A dirty glass bulb. Clean the glass bulb as per instructions supplied with the sensor. * A bubble in the glass bulb. Flick the sensor to remove the bubble. * Faulty connection to the meter. Check connectors and replace if necessary. * The reference junction is not immersed. Ensure that the bulb AND the reference junction are fully immersed. * KCl crystals around reference junction, inside the electrolyte chamber. ...
Describes the instrument's display and controls, including the alphanumeric LCD and user prompts.
Details the various connectors located on the rear panel of the 901-PH.
Explains the front panel layout, including the Mode and Calibrate keys, and their functions.
Lists accessories to check upon receiving the 901-PH instrument, including standard and optional items.
Provides detailed technical specifications for the 901-PH, covering ranges, accuracy, power, and environment.
Step-by-step guide for calibrating the pH measurement of the 901-PH using primary and secondary buffers.
Provides important notes and recommendations for performing pH calibration, including frequency and data retention.
Explains the messages displayed by the 901-PH after pH calibration attempts, indicating success or failure.
Outlines the steps for calibrating the temperature sensor of the 901-PH using a mercury thermometer.
Offers advice on temperature calibration frequency and data retention, noting it doesn't need frequent recalibration.
Explains the messages shown by the 901-PH after temperature calibration, indicating offset values.
Describes how to manually set the temperature compensation value when the temperature sensor is unplugged.
Explains how to configure the baud rate for RS232 communication with the 901-PH.
Details how to set the rate at which readings are sent via the RS232 port, including zero for commands.
Lists the standard RS232 communication parameters: 8 bits, No Parity, 1 Stop Bit, XON/XOFF.
Discusses software for PC communication and data analysis, including BASIC and Windows versions.
Lists commands that can be sent from a PC to control or query the 901-PH, like requesting data.
Describes the format of data transmitted to the RS232 port, including units and temperature compensation indicators.
Details the pinout and connections for the RS232 and recorder output sockets on the rear panel.
Lists general error messages, their possible causes, and recommended remedies for the 901-PH.
Provides solutions for common problems related to pH and mV readings, calibration failures, and inaccurate results.
Offers remedies for issues encountered with temperature readings, such as 'OverR' display or inaccurate calibration.
Explains the basic principles of how a combination pH sensor works, including sensing membrane and reference junction.
Defines and illustrates the concept of asymmetry in pH sensors, relating it to mV output at 7.00 pH.
Explains the slope characteristic of a pH sensor, expressed as mV per pH unit, and its relation to ideal performance.
Describes how temperature affects pH sensor slope and how it's compensated for using ATC sensors or manual settings.
Details the purpose and usage of the polarization output connector for Karl Fischer titrations with the Double Platinum electrode.
Explains the function of the guard connector for improving reading stability by mitigating static charge or electrical noise.
Provides a test procedure to diagnose issues with the pH sensor's reference junction, which may cause inaccurate readings.
Outlines a procedure to test the 901-PH instrument and its pH sensor for faults by checking stability and drift.
Explains the process for returning the equipment for service or repair, including necessary documentation.
General| Brand | TPS |
|---|---|
| Model | 901-PH |
| Category | Multimeter |
| Language | English |
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