Thunder Scientific 2500 series, Руководство по эксплуатации и обслуживанию

Страница: 58 / 117

4-7
4.2.3 Pressure Transducer Calibration
Pressure Transducer Calibration is typically performed in a calibration laboratory and
requires that the transducers be removed from the pneumatic system of the 2500, but must
remain electrically connected. The pressure readings must be precise in order to retain
accurate relative humidity calculations.
Equipment Required:
1. Static pressure source, range ambient to 50 PSIA (per section 4.2).
2. Static pressure source, range 50 to 150 PSIA (per section 4.2).
3. Standard or reference pressure gauge, range ambient to 50 PSIA (per section 4.2).
4. Standard or reference pressure gauge, range 50 to 150 PSIA (per section 4.2).
5. 9/16" and 11/16" open end wrenches.
6. #10 Torx driver.
7. Flat blade screw driver.
4.2.3.1 Pressure Calibration Procedure
1) Switch console power OFF.
2) 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) Using a #10 Torx driver, remove top left console panel.
5) Disconnect pressure transducers (11/16" & 9/16" wrench required). Using a
screwdriver, pry open the round snap-lock transducer mounts, and remove the
transducers. Ensure the electrical connectors are in place.
6) Connect the pressure source to the transducer to be calibrated (one only).
Note: Each transducer is operated over a limited range and requires
calibration within this range only.
a) 0-50 PSIA Transducer - Calibrate from ambient to 50 PSIA.
b) 0-150 PSIA Transducer - Calibrate from 50 to 150 PSIA.