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Sensor settings
12.2 HART interface
12.2.1 Setting the polling address
The polling address (query address) configures the gas
detector for analog operation or multidrop operation.
HART command: #6 (Write Polling Address)
1. Select Settings > Communication > Hart interface >
Polling address.
2. Set the polling address and select Confirm.
0
Activates analog operation.
1 to 15
Activates multidrop operation. The 4 to
20 mA interface is deactivated and set to a
constant current of approx. 1 mA.
Configure all instruments on a line with different polling
addresses. It is advised to choose a sequence starting
with 1.
12.2.2 Displaying the Unique Identifier
The Unique Identifier (unique HART address) must be known
for almost all HART addressing commands.
HART commands:
–
#0 (Read Unique Identifier)
– #11 (Read Unique Identifier associated with Tag)
1. Select Settings > Communication > Hart interface >
Unique identifier.
2. The Unique Identifier is displayed.
12.2.3 Setting the HART tag
The HART tag (measurement point identification) is used to
mark a measurement point.
1. Select Settings > Communication > Hart interface >
Tag.
2. Set the HART tag and select Confirm. The HART tag can
consist of up to 8 alphanumeric characters.
12.2.4 Setting the Dräger REGARD protocol
This function switches between different HART protocols.
1. Select Settings > Communication> Hart interface >
Dräger REGARD.
2. Select the software version corresponding to the
REGARD controller.
12.3 Digital interfaces
Information on configuring the other interfaces is provided in
the following documents:
Interface
PROFIBUS PA
Foundation Fieldbus FF
Modbus RTU
36
Document
9033782
9033783
9033781
Instructions for use
13
Sensor settings
13.1 Switching automatic calibration on or
off
1. Select Settings > Sensor > Auto calibration and
confirm.
2. Select Enable or Disable confirm with [OK].
13.2 Capture range
The capture range blanks out measurement fluctuations.
Measurement fluctuations are minor variations in measured
values (such as signal noise, variations in concentration).
Those variations do not change the transmitted or displayed
value. Measured values within this range will be displayed
with the capture value. Measured values outside the capture
range will be displayed with the actual measured value.
Capture value (offset)
The capture value is displayed continuously, as long as the
measured value ranges between the upper and lower capture
value limits.
Upper capture value limit
The upper capture value limit marks the upper limit of the
range in which the capture value is displayed.
Lower capture value limit
The lower capture value limit marks the lower limit of the
range in which the capture value is displayed.
13.2.1 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.
13.2.2 Switching capture range off
1. Select Settings > Sensor > Display Capture and
confirm.
2. Set offset in the first window.
3. Set the lowest value of the capture range to 0 and confirm
with Next.
4. Set the highest value of the capture range to 0 and
confirm with Next.
5. Check all the values and confirm with Next.
13.3 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].
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Dräger Polytron
®
8000 Series SW version ≥ 4.0.x
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