Ua haujlwm ua haujlwm ntawm thermocouple?

Saib cov nyhuv: yog tias ob qho kawg ntawm tus pas hlau uas muaj kev kub ntxhov, ua rau muaj kev kub ntxhov ntawm thaj chaw kub thiab tam sim no los ntawm thaj chaw siab-kub mus rau thaj tsam kub qis.

Thermocouple: Thaum ob qho kev sib cuag muaj kev sib cuag nrog cov hluav taws xob sib txawv, ua rau muaj kev sib txawv ntawm cov hlau sib txawv ntawm ob co. Raws li qhov tshwm sim, cov net me tam sim no (txog 10 μ v) yog tsim nyob rau hauv kev sib txuas nrog Circuit Court ntawm ob co. Qhov kev xyaum no tseem tuaj yeem ua los ntawm kev sib txuas ob cov hlau txuas ntawm cov khoom sib txawv ua ke thiab saib cov kev nyeem ntawm ib tug multimeter.

Tab sis nyob rau hauv ntau qhov xwm txheej, txias txias txias yog tsis 0 Cov lus ntsuas, tab sis thaum siv lub zog hluav taws xob, tab sis thaum siv lub zog hluav taws xob, tab sis thaum siv lub zog hluav taws xob ntau, tab sis ntsuas qhov ntsuas hluav taws xob ntau, tab sis ntsuas qhov ntsuas hluav taws xob, yog li thaum siv cov lus ntsuas kub, tab sis thaum siv cov lus ntsuas kub, tab sis thaum siv lub zog hluav taws xob ntau, tab sis ntsuas qhov ntsuas hluav taws xob ntau dua,

(T, {{{{{0}}}}} ε (t, tn) + ε (tn, 0)

Thermocouple electromotive ceral=ntsuas ntsuas ntsuas nqi + chav tsev kho mob

Thermocouple paib Nrhiav tau:

Nws tsis muaj peev xwm los ncaj qha ntsuas ntsuas qhov hluav taws xob ntawm cov nyhuv pom kev cuam tshuam nrog cov kab hlau sib xyaw ua ke, zoo li thermocouple yuav tsim tshiab thermocouple ntsab voltage.

Thermocouple ntsia ntawm lub chaw tso dej kub thiab thermocouple yog offset los ntawm hom kev nce ntawm "kev sib txawv".

Lub tows voltage ntawm thermocouple mus kuaj thiab siv thermocouple ntsab voltage yog amplified los ntawm kev sib txawv nrog cov kev nce qib nce.

Cov yam ntxwv ntawm Thermocouples:

1. Cov ntsuas kub thiab txias yog dav, thiab feem ntau cov sensors tau ua tiav.

2. Kev ua haujlwm kub ntawm thermocouples yog hais txog qhov loj thiab cov khoom ntawm cov hlau hlau voos

3. Tsis muaj dab tsi ntxiv lwm cov khoom siv kom tsav tsheb sensor

4. Cov degree uas tuaj yeem tau los ntawm kev tsim qauv ntawm Circuit Court

Hom thiab kev khiav hauj lwm kub ntawm thermocouples:

Cov xov tooj ntawm Thermocouple Ntsuas Hluav Taws Xob (hom kev ntsuas kub (degree} {}

1. Siv dav hauv kev lag luam

2. Cov kua qaub zoo

Muaj linear properties

1. Tsis muaj feem xyuam rau co sulfuric acid roj

2. Deterioration ntawm chromium npib tsib xee txhuas txhuas, silevon thiab lwm yam nickel alloys nyob rau hauv high-}}}}}}} degree

61.02 / 800 Degree 1. Muaj lub peev xwm thermoelectric

1. Tsis tuaj yeem siv rau kev siv hluav taws xob txo qis

2. Chromium npib tooj liab J {1}}} ~ 350-7. 89 / {{}} degree

72.28 / 750 degree 1. Yuav tuaj yeem tiv thaiv siv hauv kev txo cov pa roj 2. Yooj Yim}}}. 6 / -200 degree

17.82 / 350 degree 1. Ruaj khov nyob rau hauv qaug zog acidic thiab txo huab cua. Tooj liab yuav oxidize saum toj no 1.300 degree. Tooj Npib Nickel tooj liab Carra-kev kub siab siv b 500 ~ 1700 1. 24/500 degree

12.4 / 17 {{{{{{} 0}}}}} {{{8 {} / 0 degree} / 0 Qib

18.84 / 16 {{{{4 4} 0 Qib 13% Rhodium Platinum S 0 ~ {}. 89/200 Qib

72.28 / 750 degree 10% Rhodium platinum

Kev sib raug zoo ntawm kev ua haujlwm kub thiab xaub hlau ntawm thermocouple:

Thermocouple Hom, Hlau Inch (MM), feem ntau siv qhov kub (degree), feem ntau siv qhov kub siv (degree)

K:0.65 650 850 1.00 750 950 1.60 850 1050 2.30 900 1100 3.20 1000 1200

E:0.65 450 500 1.00 500 550 1.60 550 650 2.30 600 750 3.20 700 800

J:0.65 400 500 1.00 450 550 1.60 500 650 2.30 550 750 3.20 600 750

T:0.32 200 250 0.65 200 250 1.00 250 300 1.6 300 350

B:0.50 1500 1700

Rs: {0. {50 1400 1600

Kev tshawb nrhiav qhov ntsuas kub ntsuas qhov ntsuas qhov tseem ceeb los ntawm thermocouples

1, yuam kev ntawm ntsuas ntsuas:

Qhov ntsuas kub nyeem tau tshwm sim los ntawm tus ntsuas kub, kaw, voltmeter (MV), thiab lwm yam muaj sib txawv ntawm kev thev taus. Yog tias qhov yuam kev ntawm dividage version yog {{0}}}}}} 01% ntxiv 0.01 μ v lossis ntau dua. Qhov ua yuam kev ntawm cov digital kub maub los yuav tsum yog yam tsawg 0.25% huaj vam los ntawm tag nrho cov lej ntxiv rau ib tug lej.

2, Yuam kev ntawm Thermocouple hlau:

Thermocouple xaim cov ntaub ntawv muaj cov qib sib txawv ntawm kev ua yuam kev vim muaj kev sib txawv hauv tebchaws. Xws li Asmeskas Ansi hom K ANTIs Qib ± 2.2 Qib Siab}}}}}}}}. 75%, Qib 1 1.5 Degree lossis 0.4%.

3, Yuam kev ntawm kev hais qhia:

Tus ntsuas kev tiv tauj (txias tiv tauj) tej zaum yuav muaj qhov yuam kev ntawm 0. 05 Qib rau 1 degree thaum siv dej khov dej hauv calibration kev ua haujlwm. Thaum siv thermocouple rau ntawm qhov chaw, ntev li ntev li cov nyhuv thermoelectric tib yam, nws yuav tsis cuam tshuam rau qhov ntau ntawm lub zog hluav taws xob hauv Circuit Court.

4, them nyiaj rau qhov yuam kev ntawm cov xaim:

Lub ntsuas hluav taws xob tsis muaj kev cuam tshuam ntawm cov khoom siv hlau txuas ntxiv yog li ob zaug uas ntawm Thermocouple hlau. Vim muaj cov ntaub ntawv xov hlau sib txawv, nws tau muab faib ua ob hom: Cov xaim xaim dav hlau (thermocouple xaim) thiab xaim theem. Qhov kev ua yuam kev yog kwv yees tib yam li ntawm Thermocouple hlau. Txawm li cas los xij, thaum siv cov hlau txuas ntxiv, nws yog qhov yuav tsum tau kom muaj qhov kub hnyav, txwv tsis pub nws yuav ua yuam kev loj.

5, Kev ua yuam kev tshwm sim los ntawm thermal conduction: (feem ntau paub raws li thermal luv Circuit Court)

Ib qho kawg ntawm thermocouple yog nyob rau ntawm tshav kub txaus, thiab lwm qhov kawg yog sab nraum lub tshav kub tawm. Yog tias qhov ntev ntawm qhov ntsuas thermocouple tsis txaus, lub zog cua sov hauv lub tshav kub kub ntawm cov raj tiv thaiv tshav kub, uas yog hais txog lub cheeb ntawm lub raj tiv thaiv. Qhov ntsuas kub sab nraum lub tshav kub txaus yog kis tau rau lub tshav kub txaus, ua rau kev ntsuas tsis yog vim yog cov cua sov convection.

6, Tsis muaj rwb thaiv tsev yuam kev: (feem ntau paub txog cov hluav taws xob luv luv circuit Court)

Thaum kub siab, cov rwb thaiv tsev tsis kam ntawm thermocouples txo qis, ua rau muaj kev luv luv ntawm ob lub xov hlau. Tus nqi yuam kev tuaj yeem ncav cuag ntau dua 1% mus rau 10% ntawm kev ntsuas kub, qee zaum zoo thiab qee zaum qhov chaw tsis zoo, nyob ntawm qhov chaw ntawm lub luv luv caccuit Court.

7, Yuam kev tshwm sim los ntawm cov nyhuv sib nqus:

Thermocouple xov hlau lossis them los ntawm cov hlau nplaum, cuam tshuam rau cov tshuab hluav taws xob hauv cov ntaub ntawv hlau thiab hloov lub tshuab hluav taws xob ntawm cov khoom.

Kev tsim cov lag luam sib nqus: Lub tshuab sib nqus tsim los ntawm kev hloov pauv thiab cov tsheb thauj khoom thiab cov xov hlau, thiab cov xov hlau los ntawm tooj liab lossis hlau mesh.

Tam sim no tsim sib nqus sib nqus: lub tiaj sib nqus

8, Yuam kev tshwm sim los ntawm kev sib txhuam:

Lub zog cua sov tsim los ntawm kev sib txhuam ntawm thermocouples thiab cov cua sov (roj av, kua dej) ua rau tsis raug.

9, Yuam kev tshwm sim los ntawm Thuj Hluav Taws Xob:

Lub thermocouple yog qhov ze heev rau cov cua sov los ntawm qhov chaw kub, thiab ntsuas kub yog siab dua li qhov kub thiab kub kom sov.

10, kev ua yuam kev tshwm sim los ntawm kub kub:

Lub Hwj Chim: Xwmfab ntawm Cov X Tam Sim No, Vim Qhov Tam Sim No Hauv Lub Nruab Nrab ntawm Circuit Court, lub ntsuas kub (thermocouple xaim hluav taws xob) ua kom lub zog tawg thiab tsim cov kev ua yuam kev. Cov nyhuv no yog tshaj tawm hauv cov thermometers, thiab cov khoom siv tam sim no yog siv thaum yuav khoom los txhim kho kev ntsuas ntsuas