Measurement of small pressure differences at a high static pressure
Abstract
Test procedures using differential pressure transducers are presented. The effects of static pressure on measurement accuracy are studied. The effects of heating, time, resistance, and interference voltages on the transducers are presented and the ripple of the outlet parameter is determined. The results show voltage displacement, temperature hysteresis, and a calibration error greater than 0.3%. Float-type pressure gages, double piston gages, and fluid gages are tested. All measures show that no pressure difference greater than 12 Pa appears with the static pressure increasing to 8 MPa.
- Publication:
-
In its Problems of Large Gas Flow Measurements at High and Low Pressures p 369-390 (SEE N86-30962 22-34
- Pub Date:
- July 1985
- Bibcode:
- 1985plgf.nasa..369K
- Keywords:
-
- Accuracy;
- Differential Pressure;
- Evaluation;
- Gas Flow;
- Pressure Measurement;
- Pressure Sensors;
- Static Pressure;
- Calibrating;
- Flow Resistance;
- Hysteresis;
- Temperature Effects;
- Fluid Mechanics and Heat Transfer