4.5
HT20.95 HC20.74
I1 Oxygen OK? Y/N
HT is the target concentration.
HC is the current concentration eg.
Introduce high cal gas, when the current
concentration has stabilised it may be
accepted (**)
L ENTER
or rejected
L < ENTER.
HIGH CAL IN
PROGRESS
Temporary message.
CAL RESULT
HT20.95 HC20.95
The reading following calibration is displayed
for 1 minute (***). This completes the
calibration, to return to the measurement
display L MEASURE, to repeat the calibration
L QUIT.
* If the gas sensor module is warming-up a warning will be given with an option to
proceed.
** If the calibration has changed by more than user set limit a warning will be given
with an option to proceed.
*** If the calibration was not successful a temporary message will be displayed eg
’BAD LOW CAL , CAL IGNORED’. This indicates that the output of the gas
sensor module is outside of the expected range for the calibration gas being
used. In this event check the value of the calibration gases used. If the
calibration is still not successful call a service engineer.
4.5 Gfx gas transducer low and high manual calibration
The low calibration gas for Gfx gas sensor modules may be specified between -5vpm
and +5vpm of the measured component. Zero grade nitrogen is recommended for low
calibration.
The high calibration gas can be in the range 6 to 110% of the transducer’s FSD. Table
2.11 gives the recommended calibration levels to be used to calibrate the transducers.
The procedure for performing a Gfx low and high manual calibration is given in table
4.4. The tables use the CO transducer as an example. The measured component
displayed on the xentra screen will be the component measured by the transducer
being calibrated.
To Next Page
Loading...
Need help?
General
