Maintenance; Sensor Change; 12.1.1 Replace Sensor; Bump Test - Dräger Polytron 6100 EC WL Gebrauchsanweisung

12

Maintenance

WARNING
Risk of explosion!
In potentially explosive atmospheres, electrostatic discharge may cause sparks
on the antenna.
► Do not clean antenna in explosion-hazard areas with a dry cloth. Use a
damp cloth for cleaning.
WARNING
Risk of explosion!
In areas where there is a risk of dust explosion, electrostatic discharge may
cause sparks on the housing and sensing head.
► Do not clean housing and sensing head in explosion-hazard areas with a
dry cloth. Use a damp cloth for cleaning.
WARNING
Risk of explosion!
Replacement of components may impair intrinsic safety.
12.1

Sensor change

The sensor can be replaced in a hazardous area without interrupting the supply
voltage. The sensor can be changed at any time.
When replacing with a sensor of the same type (same order number as the
current sensor), the configuration settings are retained. If a different sensor type
(different order number) is used, the configuration settings are overwritten with
the factory settings of the new sensor.
When the sensor blocking feature is enabled, the use of other sensors
(based on the order number of the current sensor) is disabled.

12.1.1 Replace sensor

1. Replace the old sensor with a new sensor:
a. Loosen the set screw (Fig. B 2).
Instructions for use |
Dräger Polytron
®
6100 EC WL, Dräger Polytron
b. Unscrew bayonet ring (Fig. B 3).
c. Remove old sensor.
 Measured value status "Bad" (substatus sensor not detected or
defective) is output.
d. Insert new sensor (Fig. B 4) into opening.
Align Dräger logo with marking on housing (Fig. B 5).
 Measured value status "Bad" (substatus warm-up phase 1 active) is
output.
e. Secure the sensor with the bayonet ring.
f. Tighten the set screw. Required for installation in Zone 22.
2. If necessary, attach the label included with the sensor to the gas detector.
3. The sensor warm-up time is displayed in PolySoft.
 Measured value status "Bad" (substatus warm-up phase 1 active)
remains active until warm-up phase 1 is completed. Maximum warm-up
time of a new sensor: see the instructions for use of the sensor.
4. Calibrate the gas detector after completion of warm-up phase 2.
12.2

Bump test

A bump test is a quick test to check the sensitivity without transmitting the
measured value to the controller. The feature is available in PolySoft.
12.3

Testing the signal chain

To test the signal chain from the gas detector to the controller, the gas reading
(PV), measured value status (PV_STATUS), and the device status
(DIAG_STATUS) are simulated. The simulation mode is available in PolySoft.
®
Repeater ISA
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Maintenance
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