Edwards AIGX-S-DN16CF, Инструкция по эксплуатации, Страница: 18 / 26

D048-50-880 Issue E
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OPERATION
4.8 Set-point Adjustment
To read the voltage at which the set-point output signals are activated, press the required set trip switch (refer to
Figure 1 ) with an appropriate tool. The output of the gauge will indicate the set trip level for 3 seconds after which
the output will read the normal voltage output.
To adjust the voltage at which the set-point output signal is activated, press the required set trip switch and hold
it down for more than 3 seconds. The set-point voltage will start scrolling upwards. Remove pressure from the switch
as soon as you reach the required trip voltage. To make a finer adjustment, remove pressure from the set trip switch
and immediately depress the switch as many times as required. Each depression will increase the set trip voltage by
approximately 10 mV. Refer to
Section 4.2 to determine the operating voltage which corresponds to a given
pressure.
If required, the set-point signal can be used to indicate when the gauge is operating correctly. Adjust the set-point
trip level to > 8.8 V. The set-point output will then be ON when the AIGX is operating normally. The set-point output
will be OFF if the gauge is disabled or if an error condition is detected.
4.9 Error Indication
If an error occurs during operation of the AIGX, then the output signal and the LED will indicate the error. Refer to
Section 5.1 for a fault finding guide.
If an error is indicated then the AIGX will automatically turn off. You should disable the AIGX to remove the error
indication, and correct the error. You may then re-enable the AIGX if required.
Note: If you are using the AIGX with an AGC, then the AGC will display an error message and disable the AIGX
when an error occurs. In this case the LED status will return to OFF, and you should view the AGC display
to determine the error.
4.10 Bakeout
The AIGX tube can be baked to temperatures up to 200 °C after removing the electronics housing. Refer to Figure 5
and the procedure in Section 5.2 to remove and refit the electronics housing.
Ensure that the tube has cooled down before refitting the electronics housing.
Table 5 - Error Indication
Error Condition Output Signal LED AGC Display
Emission error 9.5 V Red Flashing EM ERR
Over-pressure trip 9.7 V Red OVER R