INFICON Extrima Ex-certified Hydrogen Leak Detector - Manual (Page 21)

21
EN
INFICON - Operating Instructions EXTRIMA
Calibrate
Select the sub menu Calibrate.
1. Press Enter. The display shows Expose
to background and press Start.
2. Expose the probe to background
air, press Start, or the button on
the probe, to begin the calibration
procedure.
3. An increase in the length of bar
can be seen on the display during
calibration. While the bar is moving,
expose the probe to the calibration
gas or reference leak. The display
then shows Gas Detected.
4. Remove the calibration gas at the
latest when the bar reaches its end
position.
NOTE: The instrument must be calibrated to ensure it displays the correct
values in Analysis Mode. Before calibration the Calibration Coefficient must
be set correctly as described in ”Leak Rate Unit and Calibration Coefficient”
on p. 35.
When starting calibration, the sensor must not sense gas, i.e. no measured
value should be displayed in Analysis Mode.
Regarding the interval between calibration occasions, etc., see ”Calibration
messages” on p. 37.
NOTE: The probe does not have
to be exposed to calibration gas
during the whole Calibration
Time (while the bar is moving).
The instrument only measures
the change as the probe goes
from background air to calibra-
tion gas.
NOTE: If the message ”No Gas or
Unstable Signal” is displayed re-
peatedly — go back to Detection
Mode and check functionality.
Calibration
Expose to background
and press start
Esc Start
2
3
Esc l l
Calibration Coefficient = 1.00E+01
Calibration
Expose to gas
Gas Detected
4
Calibration
Esc l l
Calibration Coefficient = 1.00E+01
Expose to gas
Gas Detected
1