Calibration ntawm Diaphragm Pressure Gauge
Yuav kom daws tau qhov teeb meem ntawm kev saib xyuas ntawm lub diaphragm siab ntsuas, lub tuam txhab tau ua ib txheej ntawm cov khoom siv rau kev sau lub caij nplooj ntoos hlav nrog cov roj silicone los ntawm kev siv cov cuab yeej uas twb muaj lawm tom qab ntau qhov kev ntsuam xyuas, thiab sau cov roj filling txoj kev. Txoj kev tshwj xeeb yog raws li nram no:
1. Ua ib qho tshwj xeeb calibration cuab tam rau diaphragm siab gauges
Cov xov txuas ntawm lub diaphragm siab ntsuas lub taub hau siv yog cov qauv xov. Tsis tas li ntawd, txhua lub diaphragm siab ntsuas yog nruab nrog lub flange txuas. Yog li ntawd, lub calibration ntawm lub diaphragm siab ntsuas yuav tsum tau ua ib tug tshwj xeeb kev pab txhawb nqa flange rau calibration.
2. Calibration txheej txheem ntawm diaphragm siab ntsuas
1) Ua ntej tshem lub taub hau ntawm lub diaphragm siab ntsuas ntawm lub flange. Tom qab ntawd txuas lub ntsuas ntsuas lub siab thiab lub ntsuas ntsuas ua ke, thiab siv lub ntsuas ntsuas siab rau kev ntsuas thiab kev hloov kho raws li txoj kev ntsuas ntsuas ntawm cov ntsuas ntsuas siab. Ntxuav lub diaphragm flange thiab sau nrog roj los ntawm lub funnel;
2) Lub sijhawm no, cov roj hloov pauv tuaj yeem nkag mus rau lub caij nplooj ntoo hlav. Tuav lub ntsuas ntawm koj txhais tes thiab co nws ob peb zaug los ntxuav cov roj transformer hauv lub caij nplooj ntoos hlav raj. Muab lub ntsuas ntsuas siab nrog lub caij nplooj ntoos hlav lub taub hau rau ntawm lub tshuab nqus tsev ntsuas ntsuas lub rooj;
3) The two-way valve is set to the "open" position, and the three-way switching valves A, B, and C are not connected. Use the air pump to draw air, the vacuum degree indicated by the standard vacuum gauge is greater than 0.93pa, the bigger the better. If the vacuum degree is less than 0.93pa, the air extraction system is not well sealed, and small air bubbles will appear after oiling the spring tube, which will affect the accuracy. First turn the two-way valve to the "off" position, and then flip the three-way switching valve, so that A and C are connected except for B, and silicone oil is injected into the table. In order to let the tiny air bubbles left in the spring tube escape when the oil filling and pumping are not completed, it is best to stop for 10 minutes and then remove the pressure gauge;
4) Muab lub taub hau ntawm lub caij nplooj ntoos hlav lub raj ntsuas ntsuas vertically upwards tiv thaiv cov roj to. Tom qab sau, qhwv teflon sealing daim kab xev nyob ib ncig ntawm lub pob qij txha, ceev-tighten, txuas lub siab ntsuas lub taub hau thiab flange capsule ua ke thiab nruj. Txij li thaum cov roj silicone kaw nyob rau hauv lub ntsuas qhov siab yog nyob rau hauv lub siab thaum zawm, lub xoom point ntawm lub ntsuas siab nce. Siv tus yuam sij Allen los qhib lub qhov cua ntawm lub tshuaj ntsiav kom tso tawm qhov seem ntawm cov tshuaj ntsiav, thiab saib xyuas tias tus taw tes ntawm lub ntsuas ntsuas qhia qhov ntsuas xoom. Thaum lub sij hawm tus txheej txheem ntawm kev kub siab, thaum lub pointer ntawm lub ntsuas ntsuas nyob rau hauv qhov ntsuas cov ntsiab lus mus rau cov thawj loj scale kab thiab yog raws nraim tib yam li tus qauv gauge siab, ceev cov xov;
5) Thaum kawg, txheeb xyuas qhov xoom taw tes thiab ntau yam. Txuas lub diaphragm siab gauge thiab ua qhov calibration nrog lub flange, thiab nruab lub assembled siab ntsuas ntawm lub siab calibrator rau calibration kom nws tsim nyog.
Hauv cov kauj ruam saum toj no, qhov tseem ceeb tshaj plaws yog kom tso pa tawm, thiab yuav tsum tsis muaj cov npuas me me hauv cov roj, txwv tsis pub qhov ntsuas qhov yuam kev yuav loj, tus pointer yuav tsis rov qab mus rau xoom, thiab qhov tseeb yuav raug txo kom tsawg. Txheeb xyuas qhov tseeb ntawm qhov ntsuas qhov qub hauv phau ntawv qhia, thiab qhov tseeb ntawm qhov ntsuas tau kho los ntawm cov txheej txheem saum toj no tsim nyog.
