Technical Manual | Dräger Polytron
®
8000 Series 79
Sensor settings Polytron
®
8xx0
2. Select the sensor type and confirm.
14.8.2 Gas settings
This function sets the unit of measurement.
For LC sensors, this function also sets the full scale deflection.
1. Select Settings > Sensor > Gas setting and confirm.
2. Select the unit of measurement from the list and confirm.
For DQ sensors and DSIR:
An overview of the new gas settings is displayed. Continue with step 4.
For LC sensors:
The current full scale deflection is displayed. Continue with step 3.
3. Set the full scale deflection and confirm (only for LC sensors).
An overview of the new gas settings is displayed.
4. After review, select Back to menu or Confirm.
14.8.3 Setting DQ sensor latching
This function is only available without relays installed. This function configures
whether the DQ sensor must be acknowledged after a measurement at higher
concentration than 100%LEL.
This setting does not apply for LC sensors.
1. Select Settings > Sensor > DQ Sensor latch. and confirm.
The current setting is displayed.
2. Select Enable or Disable and confirm.
WARNING
Explosion Hazard
If sensor latching is disabled and an alarm indicating an explosion hazard is
acknowledged, the instrument informs the end user of such hazard by having the
red LED on the display being continuously lit.
Before acknowledging an over range, ensure that the gas concentration has
fallen under 100%LEL.
WARNING
Explosion Hazard possible
Operation non-compliant with BVS type examination.
If DQ sensor latching is disabled, for safe operation in accordance with BVS 13
ATEX G 001 X, the control unit must support this function.
Make sure that over range latching is active at the control unit.
Back to menu Select Back to menu for leaving the
function without changes and confirm
with [OK].
Confirm Select Confirm to accept the settings
and confirm with [OK].
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