目 录
一 概述 ·······················································································…… (1)
二 技术要求 ·...................................................................................... ( 1 )
三 检定条件 ·...................................................................................... ( 1 )
(一)检定设备···，·············································································…… (1)
(二)检定环境条件···········································································……(1)
四 检定项目和检定方法 ·....................................................................... ( 2 )
(一)外观·······················································································…… (2)
(二)绝缘电阻检定································································，··········…… (2)
(三)压力示值检定···········································································…… (2)
五 检定结果的处理和检定周期 ·.............................................................. ( 2 )
附录1 压阻真空计检定记录单 ·························································…… (3)
附录2 检定证书背面格式 ·······························································…… (4)
附录3 检定结果通知书背面格式 ······················································…… (5)
压阻真空计检定规程
本规程适用于新制造、使用中和修理后的压阻真空计的检定。
一 概 述
压阻真空计由规管、测量显示单元和连接电缆组成。
测量显示单元有指针式和数字式两种类型。
规管为压阻应变式传感器。工作时，压阻应变片变形输出电信号，经测量显示单元
转换成相应的压力值，其值由数字显示或指针指示出来。
压阻真空计标称测量范围为105--1护Pa,测量范围为1护一1护Pa.
二 技 术 要 求
1 外观
1.1 压阻真空计测量显示单元应有产品名称、型号、编号、制造单位和出厂日期等标
志。规管应有型号和编号等标志。
1.2 测量显示单元的功能键应能正常工作;连接电缆应完好。
1.3 指针式测量显示单元不应有机械零点失调、卡针和表面刻度不清楚等现象。
1.4 数字式测量显示单元应无缺字、缺段、数字乱跳等现象。
1.5 规管的接插件应无松动。
2 绝缘电阻
压阻真空计的电源端子对机壳的绝缘电阻，应不低于20 Mno
3 压力示值相对误差
在压力测量范围 1护一1护Pa内 (包括 1护，1护 Pa点)，示值相对误差不超过
士20%。
