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在恒温、空调和采暖技术及其他范围内常常需要测量两个压力之差,为此要用差压仪表,这些仪表的外壳要密封。当测试压力传入弹性测试元件内,同时将一个标准压力引入表壳时,那么该仪表就自动地指示出测试压力和标准压力之间的压力差。进入表壳的标准压力可以在±100_(mbar)范围内(大约相当于±1000_(mm)水柱)变动。差压指示范围最小可达2.5_(mbar),大约相当于25_(mm)水柱。根据表壳静态负荷的可能性,通过标准压力可以使指示范围增大一些。这种差压仪表装有膜盒弹簧测量机构,可用作高压测量仪表,负压测量仪表或高压-负压-测量仪表,其外壳标准尺寸为144×72和
In thermostats, air conditioning and heating technology and other areas often need to measure the difference between the two pressures, for which differential pressure gauges are used and the housings of these gauges are to be sealed. When the test pressure is introduced into the elastic test element and a standard pressure is introduced into the case at the same time, the meter automatically indicates the pressure difference between the test pressure and the standard pressure. Standard pressure into the case can be ± 100_ (mbar) range (approximately equivalent to ± 1000_ (mm) water column) changes. Differential pressure indicator range of up to 2.5_ (mbar), equivalent to about 25_ (mm) water column. Depending on the possibility of a static load on the case, the indication range can be increased by standard pressure. This differential pressure gauge is equipped with diaphragm spring measuring mechanism, can be used as high-pressure measuring instruments, negative pressure measuring instruments or high pressure - negative pressure - measuring instruments, the shell of the standard size of 144 × 72 and