Dräger Polytron 8100, Instructions For Use Manual, Page: 35 / 254

Maintenance
Dräger Polytron 8100 35
6.4 Replacing the sensor
To replace the sensor:
Refer to figure B on the fold-out page.
1. Select Settings > Sensor > Sensor change and confirm.
2. Loosen set-screw (2)
2 mm Allen screw.
3. Unscrew bayonet ring (3).
4. Remove sensor from packaging.
5. Insert sensor (4) into the opening. The Dräger logo on the
sensor must point to the mark on the sensing head housing
(5).
6. Lock sensor with bayonet ring.
7. Tighten set-screw (2). Mandatory for Zone 22 installations.
8. If necessary, apply the label included with the sensor to the
instrument. This identifies the gas type from a distance,
even if the power has failed.
9. Calibrate instrument, if necessary (see Section 6.2 on
Page 30).
10. Check the installation requirements and instrument for SIL
status (see Section 5.6 on Page 19).
CAUTION
Always test a newly installed sensor with target gas to
verify proper operation
If the sensor is replaced, all settings and parameters
must be checked for correctness.
NOTICE
The sensor can be replaced in the hazardous,
classified area, without interrupting the power supply.
NOTICE
If a sensor of the same type (same part number) was
previously installed, the instrument specific
configuration is retained (gas type, measurement
range, test gas, calibration interval, etc.)
Otherwise the factory default settings of the new
sensor (see Instructions for Use for the sensor) are
uploaded and will overwrite the instrument specific
configuration.
This can be prohibited if the sensor lock function (see
Section 5.10.4 on Page 27) is activated.
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