Inficon TPG300 - User Manual

Questions and Answers

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Elizabeth ToddAug 12, 2025
What to do if the Inficon TPG300 cold cathode indicates underrange, even though the pressure is within the measuring range?
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  Jesse HarringtonAug 12, 2025
  If the Inficon Controller cold cathode indicates underrange even when the pressure is within the correct range, check the following: * Ensure that the IKR gauge is properly connected. * Inspect the cold cathode cable for any interruptions; replace or repair the cable if necessary. * Consider replacing the cold cathode gauge if it is defective. * Replace the cold cathode measurement board if it is defective.
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parkerjeffreyAug 16, 2025
What to do if the Inficon TPG300 cold cathode constantly indicates overrange, even though the pressure is within the measuring range?
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  Anthony WilliamsAug 16, 2025
  If the Inficon Controller cold cathode constantly indicates overrange even though the pressure is within the measuring range, the issue might be a short circuit in the cold cathode cable or gauge, in which case you should replace or repair the cable or gauge. Alternatively, the cold cathode measurement board could be defective, requiring replacement.
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Joshua Hernandez DVMAug 20, 2025
Why is the Pirani reading too high on my Inficon TPG300?
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  Laurie AndersonAug 20, 2025
  A high Pirani reading on your Inficon Controller could be due to a contaminated Pirani gauge. You can try to adjust the Pirani measurement circuit or clean the gauge. If that doesn't work, you may need to replace the gauge.
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Ashley MaldonadoAug 25, 2025
Why is the cold cathode reading too high on my Inficon Controller?
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  williambowmanAug 25, 2025
  A high cold cathode reading on your Inficon Controller might be due to contaminated or moist connector insulation, which can be resolved by cleaning the insulation or replacing the connector. High air humidity can also cause this issue (leakage current), so keep the air humidity low. Also, keeping the equipment in constant operation may help.
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hpeckAug 28, 2025
How to fix no communication with Inficon TPG300?
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  Richard WilliamsonAug 28, 2025
  To resolve the 'No communication' error with your Inficon Controller, ensure that pin 2 and 3 of the interface cable are crossed by using the correct cable. Also, verify that the Baud rate is correct and match it accordingly. Finally, make sure the data format adheres to the specifications for the TPG300.
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Melissa TaylorAug 31, 2025
Why is the cold cathode reading too low on my Inficon TPG300?
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  Alexandra PruittSep 1, 2025
  A low cold cathode reading on your Inficon Controller might be caused by a contaminated cold cathode gauge, which can be resolved by cleaning the gauge. If cleaning doesn't help, consider replacing the ionization chamber.
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adamsveronicaSep 4, 2025
What causes the cycle time to be greater than 100 ms on the Inficon Controller?
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  Emily WintersSep 4, 2025
  If the cycle time is greater than 100 ms on your Inficon Controller, the issue might be due to incorrect firmware. Ensure you are using the correct firmware version: TPG300: 302-654 for standard operations, or V1.5 for Profibus. Also, verify that the Baud rate is set to 19200 Baud.
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qkirkSep 8, 2025
How to fix Pirani that can not be adjusted on Inficon TPG300 Controller?
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  Laurie RoySep 8, 2025
  If the Pirani on your Inficon Controller cannot be adjusted, it might be due to an incorrect combination of the measurement board, gauge, and cable; select the correct combination. Another cause could be a severely contaminated gauge; try cleaning or replacing the gauge.

Inficon TPG300 Specifications

General

Model	TPG300
Power Supply	24 V DC
Number of Channels	1
Display	LCD
Resolution	0.1 mbar
Operating Temperature	0 to 50 °C
Pressure Range	1E-4 to 1000 mbar
Communication Interface	RS-232, RS-485
Response Time	Dependent on connected gauges