4-12
4.2.3.1 Saturator and Test Pressure Calibration Procedure
Reference Drawing 95D39902
1) For safety purposes, switch console power OFF and remove the line cord.
2) For safety purposes, turn OFF or disconnect air supply.
CAUTION!
ALL SYSTEM PRESSURE MUST BE
VENTED BEFORE PROCEEDING.
3) Bring the pressure source to the generator or take the generator to the pressure
calibration lab.
4) To access the saturator pressure transducers, remove left console panel.
5) Slowly disconnect pressure transducers (11/16" & 9/16" wrench required). Some
static pressure may still exist in the saturator and pressure transducers. This pressure
should be allowed to vent slowly through the fitting during removal. Using a
screwdriver, pry open the round snap-lock transducer mounts, and remove the
transducers. Ensure the electrical connectors are in place.
6) Reinsert line cord and switch console power ON. Wait a few moments for the softkey
menu to appear. Allow approximately 30 minutes or more for warm-up of the
pressure transducer electronics.
7) Connect the pressure source to the transducer to be calibrated (only one transducer at
a time may be calibrated).
Note -
Each transducer is operated over a limited range and requires
calibration within this range only.
A) Low Range Saturation Pressure Transducer - Calibrate from ambient
to approximately 50 psi, 3.5 bar, or 3500 hPa absolute.
B) High Range Saturation Pressure Transducer - Calibrate from
ambient to approximately 300 psi, 21 bar, or 21000 hPa absolute.
C) External Test Pressure Transducer - Calibrate from its lowest to
highest range of actual use (typically ambient to full scale).
