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Dräger Polytron 8000 Serie Notice D'utilisation page 35

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3. Set the current and confirm.
 The setting for the Analog span is displayed.
4. Select Confirm and confirm with [OK].
12.1.12 Testing the analog interface
These functions change the current of the analog interface for
test purposes (e.g., to check the programming of the
controller). It may be necessary to temporarily inhibit the
alarms at the controller to avoid false alarms. After exiting
these functions, the currents automatically return to the
maintenance signal. During the test, the maintenance symbol
is displayed.
● To set the current or concentration:
1. Select the desired option via Settings > Communication
> Analog interface.
Set Current
Set concentr.
2. Once the alarms at the controller 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 and confirm Next.
6. Select the desired option:
Set concentr. out /
set current out
concentration off /
current off
7. Select and confirm Next.
 The function is aborted.
8. Once the alarms at the controller are enabled again,
confirm the following message: Enable all alarms.
Instructions for use
|
Dräger Polytron
This function sets the current
to any value between 0 and
22 mA. Offset current and
analog span are not used in
this function.
This function sets the current
to any measured value
between 0 ppm and full scale
deflection.
This function simulates the
preset measured value or
test current value.
During the test, the mainte-
nance symbol
is displayed.
This function aborts the
transmission of the preset
test value.
®
8000 Series SW version ≥ 4.0.x
● To set the test signal:
1. Select the desired test via Settings > Communication >
Analog interface.
Set fault
Set warning
Set mainten.
2. Once the alarms at the controller are inhibited, confirm the
message Inhibit all alarms.
3. Select and confirm Enable or Disable.
12.1.13 Beam block
This function is only available for Polytron 87x0 IR (using the
sensor PIR 7000/7200).
The factory default setting for the beam block function is off.
If turned On, the beam block signal will be transmitted on the
analog interface if the optics of the PIR 7000/7200 sensor is
"dirty". The optics of the PIR 7000/7200 can become "dirty" if
there is a build-up of deposits on the optical surfaces.
However, if the gas concentration rises to a level above beam
block limit, the instrument returns to normal operation.
If the build-up of deposits on the optical surfaces increases
beyond the point where a measurement is possible, the
instrument will go into fault.
● To set beam block signals on/off:
1. Select Settings > Communication > Analog interface
and the desired option.
Beamblock on/off
Set beamblock
2. Select Enable or Disable and confirm.
● To set beam block signals:
1. Select Settings > Communication > Analog interface
and the desired option.
Beambl. current
Beamblock limit.
2. Select the current line for editing the current and confirm.
3. Set the current and confirm.
 The setting for the beam block current is displayed.
4. Select Confirm and confirm with OK.
Interface settings
|
This function sets the current
to the fault current.
This function sets the current
to the warning current.
This function sets the current
to the maintenance current.
This function switches the
beam block on or off
This function sets the current
to the beam block warning
current
This function defines the cur-
rent for the beam block sig-
nal.
This function defines the
maximum limit if the beam
block signal will be transmit-
ted on the analog interface.
en
35

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