INFICON Extrima Ex-certified Hydrogen Leak Detector - Manual (Page 22)

22
EN
INFICON - Operating Instructions EXTRIMA
Undo ll Save
Sensor condition indicator.
The indicator bar extends in length
when the sensor is detecting reference
gas. The length of the bar shows the
condition of the sensor. The bar will
become shorter if the sensor has lost
some in sensitivity, but is still useful.
The sensitivity is too low when you
can´t carry out the calibration or get a
Low sensitivity warning.
Calibration
Calibration OK
Undo l l Save
6
5. If Repeat Calibration is displayed the
measured value deviated more than
10% from the previous calibration
value. Press Re-calibrate to repeat
steps 3 – 5. Otherwise go to step 6.
6. The display will show Calibration
OK if the calibration was successful.
Press Save.
NOTE: Allow 30 seconds bet-
ween repeated calibrations for
greatest accuracy. This message
will be blinking on the display to
alert the operator.
Calibration may have to to be re-
peated several times, especially
after probe replacement.
NOTE: If you do not press Save
at this point, the instrument will
revert to the previous value after
one minute.
To discard calibration press
Undo.
NOTE: The Detector will warn if
sensitivity of sensor is too low to
safely detect a leak equal to the
set leak alarm limit. The warning
can be ignored and calibration
updated.
NOTE: If desired, the calibration
can be set under the general
password to prevent the opera-
tor from calibrating by mistake.
In this case you will have to
enter the password to start the
calibration routine. Setting pass-
word protection on calibration
is done in the General Settings
menu. Note that you must also
set a password. The instrument
is delivered with no password
set. See ”Change Password” on
p. 29 or 34.