Rae QRAE PLUS PGM-2000, Руководство по эксплуатации и техническому обслуживанию

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PROGRAMMING
4-24
4.7.3. Change LEL Gas Selection
This function allows selection of the measurement gas for the
LEL sensor from the on-board compound library. The
correction factor for this gas is automatically divided by the
correction factor for the span gas selected previously, to obtain
a new factor for the combination of gases. The new factor is
applied to the readings to display a true concentration. The user
can also create a custom correction factor for a non-standard
gas or mixture of gases.
1. If a combination LEL/VOL sensor is installed, pressing the
[Y/+] key will cause the display to show:
LEL Gas =?
Methane
Otherwise, the message “No LEL installed” will be displayed
and you will return to the first sub-menu.
2. If the user does not want to change the LEL measurement
gas, press the [Y/+] key to accept the current gas and skip
to Step 5.
3. To modify the LEL measurement gas, press the [N/-] key
first, then use the [Y/+] and [N/-] keys to scroll through a list
of gas names until the desired gas name appears in the
Display, then press the
[MODE] key to select the new gas.
The display will read “Save new gas?” To confirm the new
gas, press the
[Y/+] key. Press the [N/-] or [MODE] key to
discard the change and move to the next step.