Aalborg DPM Series, Руководство по эксплуатации

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TThhe sttaattuus LLEED w wiillll rreettuurrnn ttoo a ccoonnssttaanntt G GR REEEEN lliigghht aannd tthhe ssccrreeeenn bbeelloow w wiillll aappppeeaarr:
Figure 30: Sensor Auto Zero Completed
If the device was unable to adjust the sensor reading to within 0
r
7 counts, then
Auto Zero is considered unsuccessful. A constant RED light will appear on the
status LED. The user will be prompted with the “Auto Zero ERROR!” screen. If
additional Auto Zero procedures yield the same error message, the sensor is
most likely defective; arrange to return the meter for service.
6..4 4..114 4..2 S Stta arrt A AP P A Au utto o Ta arre
The DPM instrument is equipped with a high accuracy, high resolution absolute
pressure sensor which was calibrated at the factory and does not require
additional calibration. Depending on actual installation conditions, however,
during operation it may periodically require the auto tare procedure to increase
accuracy.
NOTE:
Before performing AP Auto Tare, make sure the device is
powered for at least 15 minutes and absolutely no flow condition is
established. For best results, we recommend starting AP Sensor
Tare at least 30 minutes after power was applied to the flow meter.
CAUTION : The AP Auto Tare procedure must be performed with
absolutely no flow conditions. Make sure both inlet and outlet
ports of the instrument are connected to the atmosphere.
NOTE: To initiate Differential Pressure Sensor Auto Zero Calibration
using the multifunctional maintenance push button, see Section 6.5.
***********************
AUTO ZERO IS
DONE!
**********************
Press any Key...