Sensor - WIKA GPD-1000 Manual De Instrucciones

5. Commissioning, operation
Checking the battery status
The LED built into the instrument signals the current battery status during operation.
The LED adopts different colours and signal variants for this:
The LED blinks green: Batteries are charged
■
The LED blinks orange: Batteries should be changed
■
The LED is lit red: Batteries are almost empty
■
⇒ In addition, the speaker emits a 5 second long alarm, just before the gas presence
detector switches itself off.

5.6 Sensor

General
The sensor has a service life of 25 to 30 hours of continuous usage. Should the sensor
require changing, it indicates this as follows:
1. The gas presence detector signals defective or impossible measurement results,
even in clean air.
2. The built-in speaker emits a constant siren sound.
If the sensor is exposed to a similar gas concentration for more than 120
seconds, the gas presence detector may become acclimatised to it, which
affects the measurement result. To prevent or eliminate this effect, the gas
presence detector should be restarted or placed in an uncontaminated
environment (no SF₆ or alternative gas).
Replacing the sensor
1. Ensure that the instrument is switched off (→ see chapter 5.2 "Switching off").
2. Remove the battery protection cover and take out the replacement sensor held
inside.
3. Unscrew the used/defective sensor from the tip of the measuring probe
(anticlockwise).
4. Screw the replacement sensor onto the tip of the measuring probe (clockwise).
WIKA operating instructions gas presence detector, model GPD-1000
EN
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