： 压力表 、 压力变送器 ( 如： 差压变送器 、 液位变送器 ) 、压力传感器、 压力校验仪 、压力显示仪等仪表。 Pressure measuring instruments can be roughly divided into : pressure gauges , pressure transmitters ( such as: differential pressure transmitters , level transmitters ) , pressure sensors, pressure calibrators , pressure indicators and other instruments.
应注意以下几点： Pay attention to the following points when installing the pressure measuring instrument :
该 垂直于水平面安装； 1. The meter should be installed perpendicular to the horizontal plane;
不要 考虑附加高度误差的修正； 2. The measuring point of the instrument is at the same horizontal position as the instrument's installation. Do not consider the correction of additional height error;
该 尽量 要 短 些 ，以 避 免指示迟缓； 3. The distance between the instrument installation point and the measurement point should be as short as possible to avoid delays in instructions;
要好 ，不应 该 有泄漏现象出现，尤其是易燃易爆 的 气体介质和有毒有害 的 介质。 4. Ensure that the tightness is good , and there should be no leakage, especially flammable and explosive gas media and toxic and harmful media.
同时 不应 该 产生附加误差， 要不然就要 考虑修正。 In the following cases, the instrument should be equipped with additional devices, but at the same time should not cause additional errors, otherwise corrections should be considered.
者 粘度太大、结晶的影响，应加装隔离装置； 1. In order to ensure that the stainless steel pressure gauge and pressure transmitter are not affected by the measured medium or the viscosity is too large, the effect of crystallization should be installed;
该 加装减振装置及固定装置； 2. In order to ensure that the instrument is not affected by vibration, the pressure instrument should be equipped with a vibration reduction device and a fixed device;
为了保证仪表不受被测介质的急剧变化 或者脉 动压力的影响， 需要 加装缓冲器 ， 尤其在压力剧增和压力陡降 的情况下 ，最容易使压力仪表损坏报废，甚至弹簧管崩裂，发生泄漏现象； 3. In order to ensure that the instrument is not affected by the rapid change of the measured medium or the pulsating pressure, it is necessary to install a buffer , especially in the case of a sudden increase in pressure and a sharp drop in pressure , the pressure instrument is most likely to be damaged and scrapped, and even the spring tube Cracking and leakage;
该 加装充满液体的弯管装置； 4. In order to ensure that the instrument is not affected by the high temperature of the measured medium, a liquid-filled pipe bending device should be installed;
禁止用于其他的工作 ，也 禁止 在没有特殊可靠的装置上进行测量，更严禁用一般的压力表作特殊介质的压力测量； 5. Dedicated special instruments are forbidden to be used for other work , and it is forbidden to measure on devices without special reliability, and it is strictly forbidden to use general pressure gauges for pressure measurement of special media;
6. For newly purchased pressure testing instruments, be sure to perform measurement verification before installation and use to prevent vibration, damage or other factors from destroying the accuracy of the pressure instrument during transportation.