BG 5171 BEN / B (2017-02) PBR 260.oi 23
Replacement is necessary, when
• the sensor is severely contaminated
• the sensor is faulty, e.g. filament broken.
Gauge failures due to contamination or wear and tear, as well as
expendable parts (e.g. filament), are not covered by the warranty.
• Allen wrench AF 2.5
• Spare sensor (→ 26)
a) Deinstall the gauge (→ 24).
b) Remove the electronics unit from the faulty sensor and mount it on the new
sensor (→ 10).
c) Mount the gauge (→ 9).
d) Adjust the gauge (→ 19).
Problem Possible cause Correction
No measuring signal No supply voltage Turn on the power supply
Connection cable defec-
tive or not correctly
plugged in
Check connection cable
Gauge in an undefined
condition
Turn gauge off and on
again (reset)
Measuring signal 0.3 V Hot cathode error
(sensor faulty)
Replace sensor (→ 23)
Measuring signal 0.5 V Pirani error
(sensor faulty)
Replace sensor (→ 23)
Electronics unit not
correctly mounted on
sensor
Check connection
Gauge does not switch
over to BA at low pres-
sures
Pirani zero point out of
tolerance
Carry out a zero point
adjustment (→ 19)
In case of an error, it may be helpful to first turn the voltage supply off and
on again after 5 s.
5.6 Replacing the Sensor
Tools / material required
Procedure
5.7 What to Do in Case of
Problems
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