Lub monocrystalline silicon siab transmitter yog lub siab sensor raws li monocrystalline silicon nti, tsim siv German MEMS thev naus laus zis thiab txhua yam -welded sensor module. Nws hloov siab hloov pauv mus rau cov qauv hluav taws xob zoo xws li 4-20mA HART los ntawm cov nyhuv piezoresistive, thiab yog siv dav hauv kev lag luam petrochemical, tshuaj, thiab aerospace kev lag luam los ntsuas qhov siab, theem, thiab qhov ntom ntom ntawm cov kua, gases, lossis vapors.
Lub hauv paus tseem ceeb ntawm cov cuab yeej no yog monocrystalline silicon piezoresistive sensor, kev sib koom ua ke ntawm qhov kub thiab txias tiv thaiv diaphragm qauv, muab electromagnetic cuam tshuam tsis kam. Siv cov khoom siv nano-monocrystalline silicon thiab siab -purity ob npaug- nqaj ncua kev tsim qauv, nws ua tiav qhov raug ntawm 0.075% FS, qhov siab tshaj qhov sib piv ntawm 200: 1, txhawb kev ua haujlwm kub ntau (-40 ~ 120℃kev tiv thaiv IP7), thiab IP. Nrog rau kev tsim-hauv HART raws tu qauv, nws tuaj yeem siv rau kev teeb tsa thiab kev sib txuas lus ntawm HART375 thiab lwm yam khoom siv, ua rau nws tsim nyog rau cov chaw ua haujlwm nyuaj xws li kev tawg-pov thawj thiab kev siv huv si.
Txoj Cai Ua Haujlwm
Lub sensor module siv tag nrho -welded thev naus laus zis thiab sab hauv muaj ib qho kev sib xyaw ua ke ntau dhau diaphragm, lub siab sensor, thiab ntsuas kub. Qhov ntsuas kub ntsuas ua haujlwm raws li tus nqi siv rau kev them nyiaj kub. Lub siab zoo ntawm lub siab sensor yog txuas nrog lub siab - lub siab chamber ntawm lub sensor diaphragm vaj tse, thiab sab tsis zoo siab yog txuas nrog rau qhov qis - siab chamber. Lub siab yog kis los ntawm kev sib cais diaphragm thiab sau cov kua rau hauv silicon nti hauv lub sensor, ua rau muaj kev hloov pauv ntawm qhov tsis kam ntawm lub siab sensor nti, yog li ua rau muaj kev hloov pauv ntawm cov zis hluav taws xob ntawm qhov ntsuas qhov system. Qhov tso zis voltage no yog proportional rau lub siab hloov thiab ces hloov mus rau hauv ib tug standardized teeb liab tso zis los ntawm lub adapter unit thiab amplifier.
Txoj Cai Ua Haujlwm ntawmMOnocrystalline Silicon Piezoresistive Siab Sensor
Lub piezoresistive siab sensor siv cov nyhuv piezoresistive ntawm monocrystalline silicon. Lub monocrystalline silicon wafer yog siv los ua cov khoom elastic. Siv cov cuab yeej siv hluav taws xob sib xyaw ua ke, cov txheej txheem sib npaug sib npaug yog diffused nyob rau hauv ib qho kev taw qhia tshwj xeeb ntawm monocrystalline silicon diaphragm thiab txuas nrog hauv ib lub voj voog. Lub monocrystalline silicon wafer yog muab tso rau hauv lub sensor kab noj hniav. Thaum lub siab hloov pauv, cov monocrystalline silicon raug strain, ua rau cov strain resistors ncaj qha diffused rau nws hloov proportionally rau qhov ntsuas siab. Qhov sib thooj voltage tso zis teeb liab yog ces tau los ntawm tus choj Circuit Court.
Cov qauv ntawm monocrystalline silicon siab sensor: Lub ntsiab Cheebtsam yog ob txheej txheem diaphragms, ib tug silicon sensor nyob rau hauv nruab nrab, thiab sau roj thiab txheej txheem kev sib txuas.
Muaj nuj nqi
Monocrystalline silicon siab/differential siab transmitters yog siv los ntsuas qib, ceev, thiab siab ntawm cov kua, gases, los yog vapors, thiab ces hloov mus rau hauv ib tug 4-20mA HART tam sim no teeb liab tso zis. Lawv kuj tuaj yeem sib txuas lus nrog HART375 lossis BST Modem rau kev teeb tsa thiab kev tswj cov txheej txheem. Qhov sib txawv ntawm lawv thiab cov tsoos siab transmitters yog tias lawv siv nano-monocrystalline silicon ua cov khoom siv sensor.
Kev daws teeb meem
Kev tshuaj xyuas ntawm Transmitter Measurement Section
1. Tshem tawm cov flange thiab xyuas cov khoom rhiab ntawm lub diaphragm rau deformation, puas, los yog roj to.
2. Tshem tawm cov phaj them nyiaj, tsis tas yuav tshem tawm cov khoom rhiab, thiab xyuas cov rwb thaiv tsev ntawm cov pins mus rau lub tsev. Nyob rau hauv voltage tsis tshaj 100V, lub rwb thaiv tsev kuj yuav tsum tsis txhob tsawg tshaj li 100MΩ.
Txuas lub voj voog thiab cov khoom siv cua. Thaum lub teeb liab siab nyob rau ntawm qhov txwv sab saud ntawm qhov ntau, tua cov khoom cua. Cov zis voltage thiab nyeem ntawv yuav tsum nyob ruaj khov. Yog hais tias cov zis voltage poob, nws qhia tau hais tias ib tug xau nyob rau hauv lub transmitter. Cov dej xau tuaj yeem nyob nrog siv xab npum dej.
Kev tshuaj xyuas Circuit Court
1. Txuas cov khoom siv hluav taws xob thiab xyuas cov teeb liab hluav taws xob ntawm qhov chaw xa hluav taws xob tso tawm. Yog tias tsis muaj qhov tso zis hluav taws xob, ua ntej xyuas seb lub hwj huam mov voltage yog qhov qub thiab ua tau raws li qhov yuav tsum tau ua ntawm lub hwj chim; txheeb xyuas qhov tsis sib xws ntawm cov khoom siv hluav taws xob, lub tshuab xa hluav taws xob, thiab cov khoom siv thauj khoom. Tsis muaj qhov hluav taws xob ntawm lub transmitter terminals lossis thim rov qab polarity tuaj yeem ua rau tsis muaj qhov hluav taws xob tso tawm. Tom qab txiav txim tawm cov laj thawj no, tshawb xyuas ntxiv rau cov khoom puas hauv lub amplifier board circuit; tshawb xyuas qhov kev sib cuag tsis zoo nyob rau hauv lub Circuit Court board connectors. Qhov taw tes txhaum tuaj yeem txiav txim siab los ntawm kev sib piv qhov ntsuas qhov ntsuas ntawm qhov ntsuas ib txwm muaj nrog qhov ntsuas ntsuas qhov ntsuas ntawm qhov ntsuas qhov tsis raug. Yog tias tsim nyog, hloov lub faulty amplifier board. Thaum kuaj xyuas cov dej ntws- hom transmitters, yuav tsum tau them nyiaj tshwj xeeb rau kev tiv thaiv - ntsuas zoo li qub rau J- hom amplifier boards.
2. Txuas lub hwj huam mov. Tom qab muab lub teeb liab nkag siab, yog tias cov khoom tso tawm tau siab dhau (ntau dua 10VDC) lossis qis dhau (tsawg dua 2.0VDC), thiab tsis muaj lus teb thaum hloov lub tswv yim siab teeb liab lossis kho qhov xoom taw tes thiab ntau yam screws, ces cov khoom tso tawm yog faulty. Rau hom kev ua txhaum no, ntxiv rau kev kuaj xyuas qhov txawv txav ntawm cov khoom siv hluav taws xob ntawm qhov ntsuas ntsuas, "oscillation control circuit" ntawm lub transmitter amplifier board yuav tsum tau kuaj xyuas kom zoo. Qhov nruab nrab qhov nruab nrab ntawm qhov siab - zaus transformers T1-12 yuav tsum yog 25 ~ 35VP-P; zaus yog kwv yees li 32 kHz. Tom ntej no, txheeb xyuas qhov kev khiav hauj lwm ntawm txhua qhov kev ua haujlwm amplifier ntawm lub rooj tsavxwm amplifier; xyuas seb puas muaj kev puas tsuaj rau cov khoom, thiab lwm yam. Hom kev ua txhaum no yuav tsum tau hloov lub rooj tsavxwm amplifier.
Hauv -Kev daws teeb meem ntawm qhov chaw
1. Cov khoom tseem ceeb raug thaiv lossis tsis raug; lub siab kais dej tsis zoo positioned.
2. Cov kab tapping siab yog xau lossis thaiv; cov pa roj los yog cov kua seem nyob hauv cov kab them; deposits muaj nyob rau hauv lub transmitter txheej txheem flange, tsim ib tug ntsuas tuag cheeb tsam.
3. Kev xaim hluav taws xob tsis raug; fais fab mov voltage siab dhau los yog tsawg dhau; kev sib cuag tsis zoo ntawm qhov kev sib txuas ntawm qhov ntsuas thiab ntsuas terminals.
4. Kev teeb tsa tsis txaus raws li kev xav tau; txoj kev txhim kho thiab qhov chaw ib puag ncig tsis ua raws li cov kev cai.
