Beam Block; Sensor Settings Pointgard 2Xx0; Switching Automatic Calibration On Or Off; Capture Range - Dräger PointGard 2000 Série Mode D'emploi

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Sensor settings PointGard 2xx0

13.1.12 Beam block

This function is only available for PointGard 27x0 IR (using
the sensor PIR 7x00).
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 7x00 sensor is "dirty".
The optics of the PIR 7x00 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.
14 Sensor settings PointGard 2xx0
14.1 Switching automatic calibration on or
off
1. Select Settings > Sensor > Auto calibration and
confirm.
2. Select Enable or Disable confirm with [OK].

14.2 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
26
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.
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.

14.2.1 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.

14.2.2 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.

14.3 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].

14.4 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].

14.5 Setting sensor lock

This point is only valid for PointGard 2100 EC and PointGard
27x0 IR.
1. Select Settings >Sensor > Sensor lock and confirm.
2. Select On or Off.
Instructions for use |
Dräger PointGard 2000 Series