Cov ntsuas ntsuas siab muaj nyob hauv lub neej thiab kev ua haujlwm. Ceev ceev thiab raug txhais cov ntsuas ntsuas siab yog cov txuj ci tseem ceeb ntawm cov neeg ua haujlwm kuaj xyuas cov roj. Yuav ua li cas peb thiaj li nyeem tau lub ntsuas ntsuas siab sai thiab raug? Nyob rau hauv qhov kev pom ntawm qhov tshwm sim uas cov kev nyeem ntawv ntawm cov neeg sib txawv txawv heev thaum txhais lub ntsuas ntsuas qhov ntsuas siab, cov ntawv no txheeb xyuas cov laj thawj ntawm kev nyeem ntawv loj, thiab muab qhov tseeb ntawm lub cev rau kev nyeem lub ntsuas siab; rau qhov tshwm sim uas tus nqi kwv yees tsis tuaj yeem nyeem tau, lub pointer siab tau sau tseg. Kev faib tawm ntawm lub dial yog muab faib ua peb kis raws li qhov tsawg kawg nkaus faib, thiab cov txheej txheem ntawm kev txhais lus kom raug tus nqi raug thiab qhov kwv yees tus nqi raug muab raws.
Hauv peb lub neej, feem ntau peb tuaj yeem pom lub voj voog ncig ntsia ntawm lub nkoj siab lossis cov kav dej. Muaj ib lub dial nyob rau hauv lub iav npog hauv lub rooj saib xyuas thiab ib tus pointer hauv nruab nrab. Qhov no yog pointer pressure gauge. Lub pointer siab ntsuas tau intuitively ntes cov qib siab nyob rau hauv lub thawv los yog pipeline. Tsuas yog los ntawm kev txhais cov lus qhia tus nqi ntawm lub ntsuas qhov siab tuaj yeem ntsuas qhov ntsuas qhov ntsuas kom raug. , kev nyeem ntawv yuam kev yuav tsum raug txo kom tsawg. Txawm li cas los xij, nws feem ntau pom nyob rau hauv kev ua haujlwm uas thaum tib lub ntsuas siab muaj qhov qhia tau zoo ib yam, cov txiaj ntsig tau nyeem los ntawm cov neeg sib txawv sib txawv heev, thiab qee qhov tsis tuaj yeem nyeem qhov tseeb rau lub sijhawm ntev. Vim li cas? Yuav ua li cas sai thiab meej nyeem tus nqi ntawm lub ntsuas siab?
1 Yog vim li cas rau loj 'meter' nyeem yuam kev
Lub hauv paus ntsiab lus ntawm lub ntsuas ntsuas qhov ntsuas siab yog siv cov khoom siv elastic kom paub qhov siab thiab tsim kom muaj qhov me me elastic deformation, uas yog amplified los ntawm kev sib kis amplifying mechanism thiab hloov mus rau hauv kev sib hloov ntawm lub pointer ncej, uas tsav lub pointer mus. qhia tus nqi siab ntawm lub dial. Vim yog cov yam ntxwv ntawm tus taw tes ntsuas ntsuas, qhov kev nyeem ntawv yuam kev yog qhov tsis muaj tseeb. Cov laj thawj tseem ceeb rau kev nyeem ntawv yuam kev yog raws li hauv qab no.
1.1 Muaj cov ntu nruab nrab ntawm cov kab ntsuas ntawm lub ntsuas qhov ntsuas siab
Lub kaum sab xis ntawm lub ntsuas ntsuas qhov ntsuas qhov ntsuas qhov ntsuas yog tas mus li, thiab cov kab ntsuas yog spaced. Thaum tus pointer tsuas yog nyob nruab nrab ntawm ob lub cim uas nyob ib sab, tus nqi tsis tuaj yeem nyeem kom raug. Txoj kev kwv yees tau txais yuav. Cov neeg sib txawv muaj tus cwj pwm nyeem ntawv sib txawv, ua rau muaj kev nyeem ntawv sib txawv.
1.2 Kev nyeem ntawv lub cev ntawm tus nyeem ntsuas ntsuas tsis raug
Nws muaj qhov nrug ntawm tus taw tes ntawm lub ntsuas ntsuas siab thiab lub dial. Thaum lub ntsuas ntsuas ntsuas ntsuas qhov ntsuas siab, kab pom ncaj qha rau ntawm lub xov tooj, ua rau txoj haujlwm qhia los ntawm tus taw tes hloov pauv thiab ua rau kev nyeem ntawv yuam kev.
1.3 Ob txhais tes swing erratically
Lub ntsuas ntsuas siab nyob rau hauv ib puag ncig vibrating, rab koob tsis tuaj yeem taw qhia rau ib qho chaw tshwj xeeb, thiab tus neeg nyeem tsis tuaj yeem txiav txim siab nyeem ntawv.
2 Yuav ua li cas nyeem lub ntsuas ntsuas kom raug
2.1 Saib xyuas cov ntaub ntawv xov tooj
Thaum nyeem lub ntsuas ntsuas siab, koj yuav tsum xub saib lub xov tooj ntawm lub ntsuas qhov ntsuas kom nkag siab txog qhov ntau, chav ntsuas siab, qib raug thiab faib tus nqi ntawm lub ntsuas siab. Qhov ntau yam qhia txog qhov ntsuas qhov ntsuas ntawm qhov ntsuas siab, thiab koj tuaj yeem paub seb qhov ntsuas qhov ntsuas siab puas nyob hauv qhov ntsuas qhov ntsuas qhov ntsuas siab zoo; qhov ntsuas tus nqi ntawm lub ntsuas siab thiab lub siab ntsuas ua ke muaj lub ntsiab lus ntawm lub cev. Tib tus nqi yog qhia nyob rau hauv txawv units. Tus nqi siab ntawm lub ntsuas ntsuas qhov sib txawv; qib raug qhia txog qhov yuam kev ntawm qhov ntsuas qhov ntsuas siab, thiab qhov siab tshaj qhov yuam kev tus nqi ntawm lub ntsuas ntsuas siab tuaj yeem suav nrog nrog ntau yam; tus nqi faib txiav txim siab tus nqi raug thiab kwv yees tus nqi ntawm lub ntsuas siab. Yog li ntawd, thawj qhov yuav tsum nkag siab thaum nyeem lub ntsuas ntsuas siab yog cov ntaub ntawv saum toj no.
2.2 Kev nyeem ntawv kom raug
Rau qhov yooj yim ntawm kev nyeem cov saib, lub dial ntawm lub ntsuas ntsuas ntsuas ntsuas feem ntau yog ntsia tau ntsug. Thaum nyeem qhov ntsuas siab, qhov sawv, zaum lossis ib nrab - sawv ntsug tuaj yeem raug coj los ua raws li qhov siab ntawm lub taub hau kom ntseeg tau tias qhov siab ntawm qhov muag thiab lub taub hau yog sib npaug. Thaum nyeem ib qho kev ntsuas siab zoo tib yam, ua rau txoj kab ntawm qhov pom ntawm lub dial, thiab saib xyuas txoj hauj lwm ntawm tus pointer kawg sib raug rau kab dial scale kab; Thaum nyeem qhov ntsuas qhov ntsuas qhov tseeb, tsis yog tsuas yog xyuas kom meej tias cov kab ntawm qhov pom yog perpendicular rau lub dial, tab sis kuj xyuas kom meej tias tus pointer thiab tus pointer yog tsim rau ntawm daim iav saum npoo ntawm lub dial. Zoo li coincidence, saib txoj hauj lwm ntawm tus pointer kawg coj mus rau lub dial scale.
2.3 Kev nyeem ntawv tseeb ntawm cov nqi tshaj tawm
Kev nyeem ntawv ntawm lub ntsuas siab muaj ob ntu, qhov tseeb tus nqi thiab tus nqi kwv yees. Tus nqi tiag tiag yog tus nqi sib thooj rau kab kab ze tshaj plaws ntawm tus taw tes ntawm tus taw tes thiab 0 nplai. Thaum tib lub ntsuas siab qhia tias tib lub siab, tus nqi nyeem los ntawm cov neeg sib txawv yuav tsum yog tib yam. Tus nqi kwv yees yog tus nqi kwv yees los ntawm tus neeg nyeem lub 'meter' raws li txoj hauj lwm qhia los ntawm tus pointer. Nws yog tus lej tsis meej. Thaum tib lub ntsuas siab qhia tias tib lub siab, cov neeg sib txawv tuaj yeem nyeem qhov sib txawv.
3 ntsiab lus kom nco ntsoov
3.1 Cov cai rau kev nyeem ntawv kwv yees
According to the reading rules, the reading pressure of the estimated value is different depending on the division value of the meter. In general, the minimum division on the pressure gauge dial has three situations, namely, the minimum division is "1" (such as 0.001, {{10}}.01, 0.1, 1, 1{{20}}, etc.), and the minimum division is "2" (such as 0.002, 0.02, 0.2, 2, etc.), the minimum division is "5" (such as 0.005, 0.05, 0.5, 5, etc.).
When the minimum division is "1", it is generally estimated according to one tenth of the minimum division value, and the estimated value is the next digit of the accurate value. For example, for a pressure gauge with a range of 0 to 40 MPa and a division value of 1 MPa, the measurement error appears at the tenth of MPa, which is estimated to be 0.1 MPa.
When the minimum division is "2" or "5", it is generally estimated at one-half or one-fifth of the minimum division value, and the estimated value is in the same position as the exact value. For example, a pressure gauge with a range of 0 to 10 MPa and a division value of 0.2 MPa, the measurement error appears in the tenth of MPa, and if it is estimated to be in the tenth of MPa, if it is less than half a grid, it should be discarded. If it exceeds half a grid, it should be estimated. , in MPa, the numbers on the tenths may be 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. For example, a pressure gauge with a range of {{20}} to 1 MPa and a division value of 0.005 MPa, the measurement error appears in the thousandth of MPa, and the thousandth of MPa is estimated, and the estimated reading is a few-fifths of a small grid. When the unit is MPa, The numbers at the thousandths place may be 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.
3.2 Nyeem lub ntsuas ntsuas siab nrog tus taw tes tuav
Thaum lub ntsuas ntsuas siab nyob rau hauv ib puag ncig zoo li qub, nws qhov taw qhia taw qhia yog qhov ruaj khov, thiab kev nyeem ntawv yooj yim heev. Yog tias lub ntsuas ntsuas siab nyob hauv ib puag ncig vibrating, nws rab koob yuav vibrate. Lub sijhawm no, lub amplitude ntawm lub pointer co yuav tsum tau soj ntsuam, thiab tus nqi siab yuav tsum yog tus nqi sib xws rau nruab nrab txoj hauj lwm ntawm lub pointer co.
Tus nqi siab tso tawm los ntawm lub ntsuas ntsuas qhov ntsuas siab yog qhov nkag siab heev, tab sis kev nyeem ntawv yog qhov tseem ceeb heev. Nws yog ib qho tsim nyog yuav tsum ua raws li cov cai ntawm kev nyeem ntawv thiab siv txoj kev nyeem ntawv kom raug, thiab kev cob qhia ntev - tuaj yeem paub cov kev txawj nyeem ntawv nrawm thiab raug.