Pfeiffer Vacuum TPR-270, Руководство по эксплуатации

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Malfunctions
13
Fig. 8: Clean transmitter
 Detach the transmitter from the vacuum apparatus.
 Fill carefully with industrial alcohol; allow to soak for 5 minutes.
 Pour out the alcohol and dispose of according to the local regulations.
 Allow the measurement chamber to dry sufficiently (at least 10 minutes).
 Connect the transmitter to the vacuum chamber.
 Evacuate the transmitter.
 Bring transmitter up to operating temperature ( ≥ 5 minutes).
 Adjust the transmitter.
8 Malfunctions
8.1 Rectifying malfunctions
industrial
alcohol
Problem Possible causes Remedy
Measuring signal continually < 0.5 V;
Display controller: "ErLo" or
"Sensor Error" ● No supply voltage
● Transmitter maladjusted
● Transmitter defective
 Check connecting cable,
power supply or controller
 Adjust the transmitter
 Replace the transmitter
Reading is too high at low pressures ● Strong outgassing of the sensor
● Sensor contaminated
 Clean the transmitter
 Adjust the transmitter
 Replace the transmitter