Dräger Polytron 8900 UGLD Instructions For Use Manual page 22

en |
Sensor settings
unit to avoid false alarms. After exiting these functions, the
currents automatically return to the maintenance signal.
During the test, the maintenance symbol
● To set current or concentration:
1. Select Settings > Communication > Analog interface
and the desired option.
Set Current
Set concentr.
2. Once the alarms at the control unit are inhibited, confirm
the message Inhibit all alarms with Next.
3. Select the line for editing and confirm with [OK].
4. Set the desired value.
5. Select Next and confirm.
6. Select the desired option:
Set concentr. out /
set current out
concentration off /
current off
7. Select Next and confirm.
 The function is aborted.
8. Once the alarms at the control unit are enabled again,
confirm the message Enable all alarms.
● To set a test signal:
1. Select Settings > Communication > Analog interface
and the desired test.
Set fault
Set warning
Set mainten.
2. Once the alarms at the control unit are inhibited, confirm
the message Inhibit all alarms.
3. Select Enable or Disable and confirm.
12 Sensor settings
Ultrasonic sensors are not suited for auto calibration because
the zero point of the sensor must only be calibrated under
workshop conditions.
22
is displayed.
This function sets the current
to any value between 0 and
22 mA. Analog offset and
analog span are not used for
this function.
This function sets the current
corresponding to any mea-
surement value between
54 dB and full scale deflec-
tion.
This function sets the preset
measurement value or cur-
rent test value.
During the test, the mainte-
nance symbol is displayed.
This function aborts the
transmission of the preset
test value.
Sets the current to the fault
current.
Sets the current to the warn-
ing current.
Sets the current to the main-
tenance current.
Instructions for use
12.1 Setting capture range
1. Select Settings > Sensor > Display Capture and
confirm.
2. Set offset in the first window.
3. Set the lowest value of the capture range and confirm with
Next.
4. Set the highest value of the capture range and confirm
with Next.
5. Check all the values and confirm with Next.
12.2 Resetting sensor
This function resets the sensor to factory default settings.
1. Select Settings > Sensor > Init. channel and confirm.
2. Select Confirm and confirm with [OK].
12.3 Setting calibration interval
After the calibration interval expires, the instrument will issue
a warning that the calibration is past due.
1. Select Settings > Sensor > Cal. interval and confirm.
2. Set the calibration interval and confirm with [OK].
12.4 Setting sensor lock
1. Select Settings >Sensor > Sensor lock and confirm.
2. Select On or Off.
On
The instrument rejects any sensor whose
part number does not match the part num-
ber of the previously installed sensor.
Off The instrument accepts any suitable sensor,
uploading the default settings of this sensor.
However, this overwrites any customized
settings with the default settings of the new
sensor.
12.5 Sensor test
This function is only active if the sensor test dongle is
installed. If the sensor does not pass the self-test, a warning
or fault message is created.
Setting periodic sensor test
This function periodically initiates the sensor self-test. The
instrument routinely checks the sensor for proper function.
1. Select Settings > Sensor > Set sensor test and confirm.
2. Select Enable or Disable and confirm.
Starting sensor test manually
This function starts a singular sensor test.
1. Select Settings > Sensor > Sensor test and confirm.
2. Select Start sensor test and confirm.
3. Select Confirm
✓ The test result is displayed.
®
| 8900 UGLD Firmware version ≥ 4.0.x
Dräger Polytron