Span Calibration; Performing Span Calibration; Automatic Calibration; Performing Automatic Calibration - Dräger PointGard 2000 Series Gebrauchsanweisung

If the current value is not within the alarm range:
7. Select Next and confirm.
 The instrument returns to the calibration menu.
8.5

Span calibration

8.5.1 Performing span calibration

Calibration can be aborted at any time. To abort calibration
select back.
Prerequisites:
– Zero-point is calibrated.
– Calibration is prepared.
Perform span calibration
1. Select Calibration > Span calibration and confirm.
 The Maintenance signal is transmitted by the analog
interface, no alarm or fault relays are switched and the
symbol is displayed.
 The parameters for the calibration gas are displayed,
1)
e. g.:
Gas : H S
2
Unit: ppm
Concentr.:25
2. If the displayed parameters do not match the target gas,
adjust the parameters:
a. Select Gas and confirm.
b. Select the calibration gas from the list and confirm.
c. Select Unit and confirm.
d. Select the unit of measurement from the list and
confirm.
e. Select Conc. and confirm.
f. Set the concentration of the calibration gas.
3. If settings are correct:
a. Select Next and confirm.
 A message like Gas flow ON H
4. Apply calibration gas.
a. Set gas flow corresponding to the sensor used (see
"Gas flow for calibrations", page 18)
5. Select Next and confirm.
 The current value is displayed
After the test gas has been applied to the sensor for 3
minutes and the displayed value is stable perform
calibration:
6. Select Next and confirm.
 The message please wait... is displayed.
 The new current value is displayed.
7. Select Next and confirm.
8. Turn off gas flow and remove the calibration adapter from
the sensor or disconnect tubing.
If the current value is not within the alarm range:
1) Not applicable for all sensors (see "Display. analog interface and relay
status", page 14).
Instructions for use |
Dräger PointGard 2000 Series
9. Select Next and confirm.
8.6
Automatic calibration (Auto calibration) combines zero
calibration with subsequent span calibration and represents
an alternative to performing the zero and span calibration
manually.
Not all sensors and gases support auto calibration. If the
function is not available, perform the calibration manually.

8.6.1 Performing automatic calibration

Calibration can be aborted at any time. To abort calibration
select back.
Prerequisites:
– Automatic calibration is enabled
– Sensor has finished the warm-up phase
– Calibration is prepared.
Perform automatic calibration
1. Apply Synthetic Air or Nitrogen if ambient air cannot be
2. Select Calibration > Auto calibration and confirm.
3. After a successful zero calibration, the span calibration is
S is displayed.
2
4. If the displayed parameters do not match the target gas,
5. If settings are correct:
6. Apply calibration gas.
2) Not applicable for all sensors (see "Display. analog interface and relay
3) Only possible for certain sensors.
 The instrument returns to the calibration menu.

Automatic calibration

used.
 The message please wait... is displayed and the
instrument automatically performs the zero calibration.
 In case of an O
sensor Fresh air cal. is displayed.
2
The Maintenance signal is transmitted by the analog
interface, no alarm or fault relays are switched and the
symbol is displayed.
started.
 The parameters for the gas are displayed, e. g.:
Gas : H S
2
Unit: ppm
Concentr.:25
3)
adjust the parameters:
a. Select Gas and confirm.
b. Select the calibration gas from the list and confirm.
c. Select Unit and confirm.
d. Select the unit of measurement from the list and
confirm.
e. Select Conc. and confirm.
f. Set the concentration of the calibration gas.
a. Select Next and confirm.
 A message like Gas flow ON H
status", page 14).
|
Calibration en
2)
S is displayed.
2
19