| 摘要 |
<p>PURPOSE:To attain a highly accurate calibration test while relieving the load of a maintenance personnel and an adjustment personnel. CONSTITUTION:The process instrumentation rack is provided with a reference variable generating means 6 generating a reference variable fed to a instrument 3 to be calibrated, a reference device 8 whose measurement range is adjustable and measuring the reference process variable at the adjusted measurement range, a range adjustment means 9 matching the measurement range of the reference device 8 with the measurement range of the calibrated instrument 3 and a calibration means 9 comparing the measurement reference variable by the calibrated instrument 3 with the measurement reference variable by the reference device 8 to calculate the calibration variable of the calibrated instrument 3.</p> |
