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113.自动平衡式显示仪表如何检定? 答:仪表在装配、调试完毕后,应进行检定。此外,仪表经过长途运输、长期存放或长期使用后,亦需进行定期检定,以考核仪表是否符合指标的要求。一般情况下,应就以下项目对仪表进行检定:(1)基本误差;(2)回差;(3)行程时间;(4)绝缘电阻;(5)绝缘强度(在出厂检定时必须进行,其它场合可不检查)。在ZBY155-83《工业过程测量和控制系统用自动平衡式记录仪和指示仪》专业标准中规定的其它项目仅在型式试验(全性能试验)时进行,这是因为:①在仪表设计时已能保证这些项目能达到指标要求,没有必要对每台仪表进行检定;②这些项目的试验一般比较麻烦,需要设备多,试验时间长,不可能对每台仪表
113. Automatic Balanced Display Meter how to test? A: The instrument in the assembly, commissioning is completed, should be tested. In addition, the instrument after long-distance transport, long-term storage or long-term use, also need to conduct regular tests to assess whether the instrument meets the requirements of the indicator. Under normal circumstances, the instrument should be verified on the following items: (1) basic error; (2) backlash; (3) travel time; (4) insulation resistance; Other occasions can not check). Other items specified in the professional standards of ZBY155-83 “Automatic balance loggers and indicators for industrial process measurement and control systems” are only carried out during the type test (full performance test) because: Can ensure that these projects can meet the requirements of the index, there is no need for verification of each instrument; ② The test of these projects are generally more troublesome, require more equipment, long test time, it is impossible for each instrument