Servomex SERVOTOUGH Oxy, Руководство оператора

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01910001B_8 © Servomex Group Limited. 2020
71
6.
CALIBRATION
Sample and calibra�on gases must be as specified in Sec�ons 2.4
and 2.6
. If the gas
pressures and/or flow rates are above those specified in Sec�ons 2.4
and 2.6
, you
must regulate the gases externally, before they enter the analyser
.
You must leave the analyser (with the electrical supply switched on) for at least 4
hours before you allow sample or calibra�on gases into the analyser
.
6.1
Manual calibration
Note:
The required frequency of calibration depends on the reliance that you place upon the
accuracy and consistency of the measurements made by the
analyser
. Adjust the
frequency according to your requirements/experience.
Note:
You can carry out a manual calibration at any time unless an automatic
validation/calibration is in progress.
Note:
If the auto validation/calibration option is installed, the gas control relays (Section
5.3.4) will select the correct gas once the manual calibration screen is shown (Figure
74). Sample gas will be reselected once the screen is exited.
Note:
For optimum
measurement accu
racy, perform Low
and
High calibrations.
Note:
We recommend that you manually calibrate the
analyser
regularly during normal
operation, and that you keep a record of the calibration errors. Use the errors to
adjust the required calibratio
n frequency
You
must manually calibrate the analyser as part of the ini�al set up, and whenever ambient condi�ons
have changed.
If the analyser is configured for automa�c valida�on/calibra�on (see Sec�on 6.2).
Manually calibrate the analyser as follows:
1.
Ensure that your equipment is configured to correctly route your calibra�on gas supply
to the
analyser sample gas inlet.
2.
Select Calibrate