抄録
The deviation of the sensitivity factors for the axial-symmetric transmission gauge (AT gauge) were examined and compared with those for the B-A gauges and the extractor gauges. The calibrations were performed against nitrogen. The deviations for three types of gauges were about ±10%, nearly the same one another. The long-term variation of the sensitivity factor for two AT gauges was also examined. For one sensor, the sensitivity factor decreased 10% during initial two years operation while the factor stabilized within ±3% for the successive three years. The temperature dependence of the sensitivity factor is discussed for the data obtained in the stabilized period.
