Aalborg DPM Series, Руководство по эксплуатации

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Shut off the gas flow into the DPM meter. To ensure that no seepage or leaking
occurs into the meter, it is good practice to temporarily disconnect the gas
source. The Auto Zero may be initiated locally using optional OLED/joystick
interface (see
Figure 1 ) or by pressing the multi-functional maintenance push
button located on the left side of the meter, or via digital communication
interface (see
Figure 4 : DPM Interface Connectors and Maintenance Push
Button).
6..4 4..114 4..1 D DP P S Se en ns so orr Z Ze erro o C Ca alliib brra attiio on
To start DP sensor Auto Zero locally using OLED/joystick interface, navigate to
“Sensor Zero Calibration” menu selection, then select “Start Auto Zero Now”.
On a DPM meter with optional OLED, the following screen will appear:
Sttaarrtt AAuuttooZZeerroo N Noow w::
NO
YEESS
Abbssoolluutteelly N Noo FFlloow w!!!!!
DO YYO OU W AAN NT
STAAR R T AAU UTTO OZZEER RO O?
Figure 28: Start Sensor Auto Zero
To start Auto Zero, select the YES option and push the joystick ENT button.
The status LED will start flashing RED/GREEN (alternating every 2 seconds).
The following screen will appear:
AU UTTO ZZEER RO O IISS O ON N!
DPPTT::77660088000 99001
Figure 29: Sensor Auto Zero “On” Confirmation
If tthhe D DPPM M’’ s ddiiggiittaal ssiiggnnaall pprroocceessssoor w waas aabbllee ttoo aaddjjuusst tthhe SSeennssoor rreeaaddiinng w wiitthhiin 0 ±
7 coouunntts ((w wiitthhiin ddeeffaauullt AAuutto ZZeerro T oolleerraannccee)), tthheen AAuutto ZZeerro iis ccoonnssiiddeerreed ssuucccceessssffuull.
NOTE: Internal Auto Zero process may take 5 to 15 seconds.
NOTE: Actual differential pressure and temperature Analog to Digital
Converter (ADC) counts readings for your instrument may be different.