（1） Pressure guide tube thickness should be appropriate, the general inner diameter is 6 10mm, the length should be as short as possible, the maximum length should not be more than 50M, in order to reduce the delay of pressure indication. Yog tias tshaj 50m, lub ntsuas siab uas tuaj yeem xa mus ntev yuav tsum tau xaiv.
（2） When the pressure guide pipe is installed horizontally, it should be guaranteed to have a tilt of 1:10 1:20 to facilitate the discharge of the liquid (or gas) accumulated in it.
（3）Thaum ntsuas nruab nrab yog ib qho yooj yim rau condense los yog khov, nws yog ib qho tsim nyog yuav tsum tau ntxiv ib qho kev txuag hluav taws xob tracing pipeline.
（4）There should be a cut-off valve between the pressure outlet and the pressure gauge to prepare for the use of maintenance pressure timing. Qhov kev txiav-off valve yuav tsum tau ntsia ze ntawm lub qhov hluav taws xob siab.