Commissioning of the instrument
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Instructions for use
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Dräger PointGard 2000 Series
13
6
Commissioning of the instrument
1. Connect the power supply cable to a current source.
The instrument starts the warm-up phase.
The display shows that the sensor is ready for
measurement in hh:mm:ss (countdown).
2. Wait until the warm-up phase ends.
Depending on the installed sensor the warm-up phase can
take between 5 minutes and 12 hours. Settings can
already be made in the menu.
3. Calibrate sensor if necessary.
4. Perform test:
a. Check transmission of signal to the control unit.
b. Check triggering of integrated alarm devices.
c. The optionally connected external relays
7 Operation
The instrument is not SIL-certified even though SIL functions
appear on the menu. HART is supported but the PointGard
appears as a Polytron 8xx0 to a HART controller. Please refer
to the Polytron 8000 Series manual 9033848 for more
information.
7.1 Display, analog interface and relay
status
The following display examples show PointGard 2100 EC.
For PointGard 2200 CAT gas names are not predefined. Gas
names can be entered. To enter gas names, contact Dräger.
7.1.1 Measuring mode
7.1.2 Special states
If the instrument is in a special state, a proper measurement
or alarming can no longer be guaranteed.
This is the case:
– When the gas concentration exceeds the measuring
range.
– When a fault occurs.
– When alarms are deactivated.
The measuring function (display output and analog/digital
interface) remains active.
– During calibrations.
– During bump tests.
– During warm-up phase.
– During maintenance.
For the current of the analog interface corresponding to the
analog signal, see 17.2.
Warm-up phase 1
The
symbol is displayed on the right side of the display.
The remaining time is indicated on the left side of the display.
Analog interface:
Maintenance current
Relays:
Fault relay switches
For warm-up phase 1, the fault relay behavior is configurable
(see "Setting fault relay warm-up 1", page 22)
Warm-up phase 2
The
symbol is displayed on the right side of the display.
The measured value is indicated on the left side of the display.
Analog interface:
Measured value
Relays:
Behavior as in measuring mode (Fault relay does not
indicate warm-up phase 2.)
Display example
Description
In normal operation, the display
shows the measured gas concentra-
tion, the selected gas and the unit of
measurement.
Exceeding the alarm thresholds.
Example shows pre alarm A1.
O2
Vol.%
20.9
O2
A1
19.0
Display example
Description
Value is over measuring range
The gas concentration is beyond the
measuring range of the sensor.
Analog interface:
Measuring range
exceeded
Relays:
A2 relay switches
Value is under measuring range
The gas concentration is beyond the
measuring range of the sensor.
Analog interface:
Drift below zero
Relays:
Fault relay switches
Fault indication
The symbol is displayed on the right
side of the display.
Analog interface:
Fault current
Relays:
Fault relay switches
Maintenance indication
The symbol is displayed on the right
side of the display.
This is displayed when alarms are
deactivated, during calibrations, bump
test and maintenance work.
Analog interface:
Maintenance cur-
rent
Relays:
No change
Warning indication
The symbol is displayed on the right
side of the display.
Analog interface:
Warning current
1)
Relays:
No change
1) Only when warning current is enabled. Factory default setting: dis-
abled.
O2
A2
O2
Vol.%
O2
Vol.%
20.9
O2
Vol.%
20.9