| 摘要 |
PURPOSE:To eliminate maintenance personnel's burden on the calibration of an analyzer after the time for warming up the analyzer by comparing a difference between the value of a clock written into the previous memory and the value of the present clock with a preset value and calibrating the same. CONSTITUTION:A relational judgement part 8 writes the value of the clock 4 into the memory 6 at the intervals of the specified time t0 during the time when a power source is kept supplied to the gas analyzer. Said part compares whether the difference (TC-TO) between the value t0 written into the previous memory 6 and the present value TC of the clock 4 is larger than the preset value Tl or not. The judgement part outputs the 1st calibration signal after waiting for the lapse of the time for warming up the analyzer if said value is larger. On the other hand, the judgement part 8 does not emit the calibration signal when the (TC-TO) is longer than t0 but shorter than Tl. The relational judgement part 8 stores, for example, information on a service interruption into the memory 6 and stores the value TC of the present time as the value TO of the memory 6 to restore the initial state. The labor required for the maintenance personnel to throw a power source and to make calibration before and after the warming up time is thus made once and the burden of said personnel is decreased. |
