To meet growing demands for higher pressure measurements and measurement accuracies up to 200,000 psig, the Physical Metrology Laboratory (PML) at Rocky Flats Plant, Golden, Colorado, purchased and calibrated a Harwood Model DWT-1000, controlled-clearance piston gauge. Calibration of the DWT-1000 followed guidelines established by the National Bureau of Standards (NBS). The pressure medium used during operation and calibration of the system was n-Heptane. Due to the flammability of n-Heptane, safety enclosure was designed and constructed around the DWT-1000 which, when used in conjunction with a data acquisition console, monitors both safety and calibration equipment while protecting the surrounding environment in the event of a sudden pressure release. Calibration results and procedures are compiled in this report to assist those who will be or are presently confronted with the challenge of calibrating a similar type controlled-clearance piston gauge.
NASA STI/Recon Technical Report N
- Pub Date:
- September 1987
- Pressure Gages;
- Measuring Instruments;
- Pressure Measurement;
- Instrumentation and Photography