- Lub transmitter tsis muaj zis
1. 1: Xyuas seb lub zog muab hluav taws xobkev xa tawmyog thim rov qab; Kev daws: Txuas lub hwj huam muab hluav taws xob polarity raug.
1.2: Ntsuas cov khoom siv fais fab ntawm lub transmitter kom pom tias muaj 24V dc voltage; Kev daws: Lub zog muab voltage muab rau lub transmitter yuav tsum yog ≥ 5V (piv txwv li, tus voltage ntawm lub davhlau ya nyob ≥ 12V). Yog tias tsis muaj mov fais fab, kuaj seb puas tau xaiv cov khoom siv tsis raug (cov lus tawm tswv yim yuav tsum yog ≤250ω);
1.3: Yog tias nws yog lub taub hau meter, tshuaj xyuas seb lub taub hau ntsuas yog puas (koj tuaj yeem txhais li cas tom qab lub taub hau luv, nws txhais tau tias lub taub hau ntsuas yog puas); Kev daws: Yog tias lub taub hau ntsuas yog puas, koj yuav tsum hloov lub taub hau ntsuas.
1.4: serial lub ammeter rau 24V fais fab khoom siv Circuit Court los xyuas seb qhov tam sim no yog qhov qub; Kev daws: Yog tias nws yog qhov qub, nws txhais tau tias lub transmitter yog ib txwm, thiab koj yuav tsum xyuas seb puas yog cov twj paj nruag hauv Circuit Court yog ib txwm.
1.Tsis muaj hluav taws xob muab hluav taws xob txuas nrog lub zog hluav taws xob ntawm lub transmitter; Kev daws: Txuas lub zog qaum rau lub zog hluav taws xob.
2. Lub tshuab xa tawm ≥ 20MA
1: Puas yog lub tshuab hluav taws xob muab hluav taws xob? Kev daws: Yog tias nws tsawg dua 12VDC, xyuas yog tias muaj lub nra hnyav hauv Circuit Court. Cov lus qhia impedance ntawm lub thauj khoom xa hluav taws xob yuav tsum tau ua tiav RL ≤ (transmitter fais fab xa voltage -12V) / (0.02a) ω
2: Puas yog qhov tseeb siab tshaj li cov tau xaiv ntau ntawm cov khoom siv siab; Kev daws: Xaiv lub siab xa cov khoom siv nrog cov ntau yam tsim nyog dua.
3: Puas yog lub siab sensor puas lawm? Kev loj heev rau qee zaum qee zaum tuaj yeem ua rau lub diaphragm kev puas tsuaj. Kev daws: Nws yuav tsum tau xa rov qab mus rau cov chaw tsim tshuaj paus rau kev kho.
4: seb cov hlau yog xoob; Kev daws: Txuas cov xov hlau thiab zawm lawv 5: Puas yog lub zog hluav taws xob xaim yog? Kev daws: Lub hwj chim sib txuas yuav tsum txuas nrog lub davhlau ya nyob twg
3: aututput≤4MA
1: Puas yog lub tshuab hluav taws xob muab hluav taws xob? Kev daws: Yog tias nws tsawg dua 12VDC, xyuas yog tias muaj lub nra hnyav hauv Circuit Court. Cov lus qhia impedance ntawm lub thauj khoom xa hluav taws xob yuav tsum tau ua tiav RL ≤ (transmitter fais fab xa voltage -12V) / (0.02a) ω
2: Puas yog qhov tseeb siab tshaj li cov tau xaiv ntau ntawm cov khoom siv siab; Daws: re xaiv ib lub siab xa cov khoom siv nrog cov khoom uas tsim nyog
3: Puas yog lub siab sensor puas lawm? Kev loj heev rau qee zaum qee zaum tuaj yeem ua rau lub diaphragm kev puas tsuaj. Kev daws: Nws yuav tsum tau xa rov qab mus rau cov chaw tsim tshuaj paus rau kev kho.
4, tsis muaj qhov ntsuas
1: Puas yog lub tshuab hluav taws xob muab hluav taws xob? Kev daws: Yog tias nws tsawg dua 12VDC, xyuas yog tias muaj lub nra hnyav hauv Circuit Court. Cov lus qhia impedance ntawm lub thauj khoom xa hluav taws xob yuav tsum tau ua tiav RL ≤ (transmitter fais fab xa voltage -12V) / (0.02a) ω
2: Yog tus siv lub siab tsim nyog tus nqi tsim nyog? Kev daws: Yog hais tias qhov tseeb ntawm kev siv lub ntsuas ntsuas yog tsawg, nws yog qhov tsim nyog los hloov nws nrog qhov ntsuas siab dua siab dua siab.
3: Yog cov ntau ntawm cov kev ntsuas siab ntsuas qhov ntsuas tau raws li cov ntau ntawm cov khoom siv siab? Kev daws: Qhov ntau ntawm cov kev ntsuas siab ntsuas qhov ntsuas yuav tsum muaj raws li cov ntau ntawm cov khoom xa khoom
4: Puas yog cov lus qhia thiab sib tov nrog lub siab ntsuas ntsuas qhov tseeb? Kev daws: Yog tias lub tswv yim ntawm lub siab qhia ntsuas yog 4-20ma, cov zis tawm ntawm lub teeb liab ntawm cov khoom xa tuaj yeem tuaj yeem txuas nrog kev sib txuas ncaj qha; Yog hais tias lub tswv yim ntawm lub siab qhia ntsuas yog 1-5v, ib tug resistor nrog qhov tseeb ntawm ib txhiab lossis ntau dua thiab ib qho kev tsis kam lees cov twj paj nruag, thiab tom qab ntawd txuas nrog lub tswv yim ntawm lub transmitter.
5: Cov lus qhia impedance ntawm lub thauj khoom xa hluav taws xob yuav tsum ua raws li nws cov yam ntxwv sib xyaw, tab sis nws yuav tsum tau ua raws li nws cov yam ntxwv sib txawv (tab sis yuav tsum qis dua 36VDC), txo lub nra, thiab lwm yam
6: Tshawb xyuas yog tias lub tswv yim tswv yim ntawm cov lej taw tes sib dhos qhib thaum tsis muaj ntaub ntawv sau cia; Kev daws: Yog tias muaj kev qhib Circuit Court: a. Nws tsis tuaj yeem nqa lwm lub nra; b. Siv lwm lub tshuab hluav taws xob nrog cov lus qhia impedance ≤ 250 ω thaum tsis muaj ntawv sau.
7: Puas yog cov cuab yeej siv ua hluav taws xob? Kev daws: Khoom siv Casing Grounding
8: Txawm hais tias yuav cais cov xaim los ntawm AC lub zog thiab lwm cov hluav taws xob daws teeb meem: Cais cov hlau sib cais los ntawm AC fais fab thiab lwm yam khoom siv fais fab
9: Puas yog lub siab sensor puas lawm? Kev loj heev rau qee zaum qee zaum tuaj yeem ua rau lub diaphragm kev puas tsuaj. Kev daws: Nws yuav tsum tau xa rov qab mus rau cov chaw tsim tshuaj paus rau kev kho.
10: Seb puas muaj xuab zeb, impurities, thiab lwm yam thaiv cov raj xa dej, uas tuaj yeem cuam tshuam qhov ntsuas qhov tseeb; Kev daws: Nws yog ib qho tsim nyog los ntxuav cov impurities thiab ntxiv lub lim vijtsam nyob rau hauv pem hauv ntej ntawm lub siab interface.
11: Puas yog qhov ntsuas kub ntawm cov raj dej ntws dhau? Kev ua haujlwm ntawm qhov kub ntawm lub siab sensor yog -25 ~ 85 ℃, tab sis hauv kev siv tiag tiag, nws yog qhov zoo tshaj yog tsis pub dhau -20 ~ 70 ℃. Kev daws: Ntxiv cov raj twm los ua kom sov. Nws yog qhov zoo tshaj plaws ntxiv ib co dej txias hauv lub raj tsis muaj zog ua ntej siv cov kev cuam tshuam ncaj qha rau lub sensor, yog li ua kom nws lub neej pabcuam kom txo tau.
Lub Sijhawm Post: Nov-21-2023