A PORTABLE CALIBRATOR FOR INTERMEDIATE RANGE VACUUM GAGES
ARO INC ARNOLD AFS TN
Pagination or Media Count:
A portable calibrator to facilitate in-place calibrations of intermediate range pressure transducers has been developed. The operating principle of the calibrator is to transfer gas, in controllable mass increments, into an initially evacuated vessel of known volume by use of a transfer volume. By adjusting the mass increments to specific predetermined levels, the pressure in the initially evacuated vessel can be increased in steps of 0.001, 0.01, 0.1, or 1 torr. The pressure ranges covered are from 0.001 to 1 torr and from 1 to 30 torr. The indicated corresponding limits of error applicable to each range are plus or minus 1.3 and plus or minus 0.76 percent of desired pressure level, respectively.
- Test Facilities, Equipment and Methods