Rosemount 644 kub transmitter yog dav siv 2-xaim kub transmitter, feem ntau paub txog nws cov kev ua haujlwm ruaj khov thiab zoo. Thaum txiav txim rau 644 kub transmitter ua ke nrog PT100 thermocouple, kev ua haujlwm zoo tau tiav.
Rosemount 644 kub transmitter yog qhov zoo tagnrho rau cov ntawv thov tseem ceeb (tsim rau ntau yam txheej txheem ib puag ncig). Nws muab siab - ntsuas qhov tseeb rau ntau yam khoom siv, ua kom pom kev ntseeg tau ntawm Rosemount cov khoom. Rosemount 644 tuaj yeem txiav txim nrog 4-20 mA / HART lossis tag nrho cov txheej txheem Fieldbus cov txheej txheem. Txhua chav tsev tuaj yeem raug teeb tsa kom haum rau ntau yam khoom siv sensor: RTDs, thermocouples, millivoltmeters, lossis ohmmeters.
Transmitter thiab Sensor Matching
Rau cov khoom siv muaj kev nyab xeeb, tsuas yog ib qho kev tiv thaiv kev nyab xeeb yog xav tau rau ntau lub 848T transmitters. Tom qab nkag mus rau qhov kub thiab txias impedance nkhaus ntawm qhov teev RTD sensor rau hauv 644 transmitter, kev sib tw zoo meej ntawm lub transmitter thiab sensor tiav. Qhov no tiv thaiv kev sib hloov tsis raug nrog lub sensor thiab txhim kho qhov tseeb ntawm 75%.
Installation Flexibility: DIN Hom A sab saum toj junction box mount transmitters yog sib xws nrog ntau yam chaw taws teeb transmitter vaj tse thiab tuaj yeem ua ke los yog remotely mounted rau ib leeg sensor. Lub compact rail mount hom yog zoo tagnrho rau DIN rail mounting nyob rau hauv confined qhov chaw nyob rau hauv ntom tswj chav.
Integrated LCD Zaub: Kev ntsuas qhov kub thiab txias hauv cheeb tsam thiab kev ntsuas ntsuas kev ua haujlwm muab cov ntaub ntawv tiag tiag - sijhawm thiab qhov tseeb ntawm kev hloov pauv hauv cov txheej txheem txheej txheem.
Powered by Digital Field Devices: Siv HART lossis fieldbus kev sib txuas lus cov cuab yeej ua kom muaj kev ua tau zoo thiab muaj peev xwm kuaj xyuas qib siab. Cov transmitters ces xa cov ntaub ntawv mus rau Qhov Kev Tswj Xyuas Qhov Tseeb (AMS).
Txhim khu kev qha Transmitter Performance: 644 HART transmitter ua raws li NAMUR NE 21 cov lus pom zoo, kom ntseeg tau tias kev ua haujlwm zoo tshaj plaws ntawm kev xa xov hluav taws xob txawm nyob rau hauv qhov kev xav tau ntawm cov khoom siv hluav taws xob sib raug zoo heev. Tsis tas li ntawd, 644 HART transmitter kuj ua raws li NAMUR NE 43 thiab NE 89 cov lus pom zoo.
Rosemount kub transmitters paub txog lawv cov kev ruaj ntseg siab, tshwj xeeb tshaj yog cov qauv 644. Thaum yuav khoom kub transmitter, nws yog ib qho tseem ceeb kom nkag siab txog nws cov kev ua tau zoo los xyuas kom meej cov txiaj ntsig zoo. Yuav kuaj xyuas qhov txawv txav li cas hauv Rosemount 644 kub transmitter?
Rosemount 644 kub transmitter siv cov thermocouples lossis cov ntsuas kub tsis kam (RTDs) ua nws cov ntsiab lus. Lub teeb liab los ntawm qhov ntsuas tau raug xa mus rau lub transmitter module, qhov uas nws tau ua tiav nrog rau kev tswj hluav taws xob, kev lim dej, kev ua haujlwm loj, kev kho tsis raug, V / I hloov dua siab tshiab, tsis tu ncua tam sim no, thiab rov qab tiv thaiv circuitry. Cov teeb liab ua tiav no ces hloov mus rau hauv 4-20mA tam sim no cov teeb liab tso tawm uas yog linearly ntsig txog qhov kub thiab txias.
Important Notes: The power supply to the Rosemount temperature transmitter must be free of power spikes, as these can easily damage the transmitter. Transmitter calibration should be performed 5 minutes after power-on, taking into account the ambient temperature. When measuring high temperatures (>100 degree), lub sensor kab noj hniav thiab hlws ris lub thawv yuav tsum tau insulated nrog cov ntaub ntawv muab tub lim los tiv thaiv lub hlws ris lub thawv los ntawm overheating thiab hlawv tawm lub transmitter. Thaum siv lub sensor nyob rau hauv ib puag ncig uas muaj kev cuam tshuam loj heev, lub tsev yuav tsum muaj kev ruaj ntseg hauv av kom tsis txhob cuam tshuam. Lub zog thiab cov teeb liab tso zis yuav tsum tau xa tawm ntawm Ф10 shielded cable, thiab cov txiv ntseej clamping yuav tsum tau nruj kom ntseeg tau tias airtightness. Tsuas yog RWB hom kub transmitters muaj 0 ~ 10mA tso zis, uas yog peb lub xov tooj -. Hauv qab 5% ntawm qhov ntau, tsis yog -linearity tshwm sim vim lub transistor tig -tawm yam ntxwv. Kub transmitters yuav tsum tau calibrated txhua txhua 6 lub hlis. Yog tias DWB tsis tuaj yeem raug kho kom raug vim muaj kev txwv hauv Circuit Court, nws yog qhov zoo tshaj plaws los xaiv qhov ntau raws li cov lus qhia kom paub meej linearity.
Teeb meem kev teeb tsa: Transmitter Tsis muaj qhov tso zis
① Yog hais tias lub transmitter tsis muaj cov zis, xyuas seb lub transmitter fais fab mov puas hloov;
Txuas lub hwj huam mov polarity kom raug.
② Ntsuas lub tshuab xa hluav taws xob kom ntseeg tau tias muaj 24V DC voltage;
Lub hwj chim mov voltage rau lub transmitter yuav tsum siab tshaj los yog sib npaug rau 12V (ie, qhov voltage ntawm lub transmitter lub hwj chim input davhlau ya nyob twg siab tshaj los yog sib npaug rau 12V). Yog tias tsis muaj lub zog, tshawb xyuas cov kab hluav taws xob tawg, xaiv qhov ntsuas tsis raug (input impedance yuav tsum tsawg dua lossis sib npaug rau 250Ω), thiab lwm yam.
③ Yog tias nws yog ib qho kev sib xyaw ua ke nrog ib qho ua tau - hauv lub taub hau 'meter', xyuas seb lub taub hau 'meter' puas puas (koj tuaj yeem ua ntej luv - Circuit Court ob lub xov hlau ntawm lub taub hau 'meter'; yog tias nws ua haujlwm ib txwm tom qab luv luv -circuiting, ces lub taub hau meter puas lawm);