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Verfügbare Sprachen
Verfügbare Sprachen
13.1.10 Setting analog span
This function adjusts the analog output at 20 mA without affecting the 4 mA set
point.
1. Select Settings > Communication > Analog interface > Analog span
and confirm.
2. Select the line for editing the offset (range: -0.5 to 0.5mA) and confirm.
3. Set the current and confirm.
The setting for the Analog span is displayed.
4. Select Confirm and confirm with [OK].
13.1.11 Testing the analog interface
These functions change the current of the analog interface for test purposes
(e.g. to check the programming of the control unit). It might be necessary to
inhibit the alarms at the control 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:
Instructions for use
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Dräger PointGard 3000 Series
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 corre-
sponding to any measurement value
between 0 and full scale deflection.
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.
13.1.12 Beam block
This function is only available for PointGard 37x0 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.
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Interface settings
This function sets the preset mea-
surement value or current test value.
During the test, the maintenance sym-
bol
is displayed.
This function aborts the transmission
of the preset test value.
Sets the current to the fault current.
Sets the current to the warning cur-
rent.
Sets the current to the maintenance
current.
en
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