Jiangsu Runyi teach basic knowledge to customers that should be paid attention to in the purchase and use of pressure gauges .
First,The consumer purchasing pressure gauges that should be paid attention to basic knowledge:
1, The following points should be made clear in a general gauge purchasing and ordering:
a. meter Name: To clear the general pressure gauge, oxygen pressure gauge, electric contact pressure gauge, ammonia pressure gauge;
b.Instrument Type: different manufacturers have different models, but explicitly written in the contract;
c .meter diameter size: Φ40, Φ60, Φ100, Φ150, Φ200, Φ250.
d. installation: radial, axial, with front belt behind.
e .measuring range: vacuum table --- 0.1MPa
Pressure gauge - measuring caps
The pressure vacuum - measuring range
f. Accuracy class: 1.0; 1.6; 2.5; 4.0
Inadditiontotheabove pointsshouldbeclearintheprocurementand orderingofspecialgauge,dependingonthe pressure gaugeshouldbe clear the followingpoints:
A.TheinstrumentationName:diaphragmpressure gauge,anti-corrosionpressure gauge,pressure gauge,diaphragmpressure gauge.
B. Diaphragmpressure gauge:
a.Dependingonthepurpose,clearspring tube,fill fluid(silicone oil,glycerine, cooking oil,fluorine oil)
b .Based onmeasured mediacorrosion,diaphragmmaterial(such asSUS316,tantalum sheet,titanium sheet,Monel,Hastelloy,coating, etc.)should be clearly.
c .Caseflangeconnectionflangesimplementation of standards, size, materialshould be clearly.
C .Anti-seismic pressure gaugeshould be clearlythecasewithin thedampingfluid(silicone oil,glycerine,etc.)
D. Anti-corrosionpressure gaugeshould bebasedonthemeasured mediumcorrosive orcorrosiveworking environment,clearjoints,springtubeand casematerial.
Second,The consumer using pressure gauges that should be paid attention to basic knowledge:
⑴Instrumentmustbevertical:17mmwrench totighten theinstallation should be,shouldnottwistthecase;thetransportationshouldavoidcollision.
⑵Instrumentusingappropriateambienttemperature-25 ~ 55 ℃.
⑶Workenvironmentvibrationfrequency<25HZ,amplitudeis not greater than1mm.
⑷ Using the ambient temperature is too high,theinstrumentindicated valuebacktozeroorshowing the valueof tolerance,thecaseupperseal
The rubber plug is cut open, so that the instrument is communicated with the atmosphere. ⑸instrumentationused, should beintherangeofthe upper limit of1/3to 2/3.
⑹inmeasuringcorrosive media,thethepossiblecrystallization medium,the viscosity ofthemediashould be added totheisolation device.
⑺instrumentshould alwayscheck (at leastonce every three months),ifthefailureshould be promptly repaired.
⑻meterfactory on the datesix monthsundernormal storageconditions of useby the companyresponsiblefortherepair or replacementdue topoormanufacturing qualityfailureor damage.
⑼Theinstrumentmeasuringcorrosive media requiredordering please indicate therequiredconditions.