Baker Hughes Druck DPI 610A, Инструкция по эксплуатации

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Copyright 1998 Baker Hughes Company.
English–DPI610A Instruction Manual | 7
Note: The display can show either: POD = Off or POD = current value (QFE pressure
reading). The POD RESET key (F2) sets the current POD correction to Off.
2.1.1 Method (Accessible Switch Contacts)
1. Connect the instrument to the static system and connect the altitude switch as shown.
Ensure that the pitot system is vented to atmosphere before starting the test:
Note:
Contacts must be potential free.
Figure 3: Altitude Switch Test Connections
2. Select negative pressure and close the release valve.
3. Close the manual let-down valve.
4. Press the RUN key (F1) and operate the hand-pump, continue until the switch operates:
mbar
POD = Off
POD Correction
mbar
POD Correction
POD = Off
WARNING
VENT SYSTEM
BEFORE SETTING POD
WARNING
VENT SYSTEM
BEFORE SETTING POD
WARNING
VENT SYSTEM
BEFORE SETTING POD
CHANGE POD
VALUE
POD RESET CHANGE POD
VALUE
POD RESET CHANGE POD
VALUE
POD RESET
ENTER VALUE
mbar
POD Correction
POD = 1002.85
ft
F2 F1
S
Applied Static System Pressure
Vent Pitot System (Atmospheric Pressure)
Altitude Switch
Select
Negative (-)
Pressure
SWITCH TEST
CONTACT STATE
POD = 1008.63
ALTITUDE
RUN
ft ft ft
SWITCH TEST
CONTACT STATE
POD = Off
ALTITUDE
RUN MANUAL
OPERATION
STOP MANUAL
OPERATION
STOP
POD = Off
ALTITUDE
POD = Off
ALTITUDE
CONTACT STATE
CLOSED AT
5550 ft
OPENED AT 5325 ft
HYSTERESIS 225 ft
SWITCH TEST SWITCH TEST
CONTACT STATE
CLOSED AT
5550 ft