Kev sib piv ntawm qhov zoo thiab qhov tsis zoo ntawm pt100 thiab pt1000:

Kev sib piv ntawm qhov zoo thiab qhov tsis zoo ntawm pt100 thiab pt1000:

Description Pt100 Pt1000

Kub hloov pauv 0.385Ω / degree 3.85Ω / degree

Kev daws teeb meem Ob qhov chaw zauv siab (peb qhov zauv)

pt ntsuas kub ntau yam yog tib yam

pt tivthaiv qhov tseeb yog tib yam tib yam

Test system voj raug yog siab

Qhov txawv ntawm pt100 thiab pt1000

 

Tib lub ntsiab lus:

Ob leeg yog cov ntsuas kub tsis kam ua los ntawm platinum (Pt), uas yog qhov zoo ntawm qhov kub thiab txias coefficients.

qhov txawv:

1. Qhov tsis kam ntawm 0 degrees Celsius yog txawv, Pt100 yog 100 ohms, thiab Pt1000 yog 1000 ohms;

2. PT100 txhais tau hais tias nws cov nqi kuj yog 100 ohms ntawm 0 degree, thiab nws cov nqi kuj yog li ntawm 138.5 ohms ntawm 100 degree.

PT1000 txhais tau hais tias nws qhov kev tiv thaiv tus nqi yog 1000 ohms ntawm 0 degree, thiab nws tus nqi kuj yog li ntawm 1385 ohms ntawm 100 degree.

Lub luag haujlwm dab tsi ntawm lub thermistor ua si hauv Circuit Court

 

Paub txog qhov kub thiab txias. Kev ua haujlwm ntawm lub thermistor yog qhov kub thiab txias thiab tswj qhov kub. Lub thermistor yog qhov ntsuas kub ntsuas ~ nws yog qhov ua haujlwm ntawm qhov ntsuas kub.

 

Thermistor yog ib qho resistor ua los ntawm cov khoom tshwj xeeb, thiab nws cov nqi kuj hloov nrog qhov kub thiab txias. Raws li qhov sib txawv coefficient ntawm kev hloov pauv, cov thermistor tau muab faib ua ob hom, ib qho yog hu ua qhov zoo kub coefficient thermistor (PTC), uas nws tus nqi kuj nce nrog qhov nce ntawm qhov kub; lwm qhov yog hu ua qhov tsis zoo kub coefficient thermistor Resistance (NTC), nws cov nqi tsis kam txo nrog nce kub.

Thermal resistance khoom calibration kauj ruam

 

1. Txuas cov khoom raws li daim ntawv thov daim duab, los yog nruab cov khoom ntawm lub rooj tsav xwm Circuit Court uas tau tsim.

 

2. Raws li tus nqi ntawm cov khoom siv fais fab, txuas lub hwj chim; nruab qhov hloov kho potentiometer; txuas cov zis mus rau multimeter.

 

3. Tshawb xyuas lub rooj kawm tiav raws li qhov ntsuas kub ntawm qhov ntsuas kom tau txais cov nqi sib xws ntawm cov nqi Rlow ~ Rhigh.

 

4. Qhib lub hwj chim thiab tig rau 15 feeb.

 

5. Kho qhov tsis kam ntawm lub thawv tsis kam rau tus nqi sib npaug rau Rlow, thiab kho qhov xoom potentiometer kom cov zis sib raug rau qhov xoom (piv txwv li, 4mA).

 

6. Kho qhov tsis kam ntawm lub thawv tsis kam mus rau tus nqi sib npaug ntawm Rhigh, thiab kho lub amplitude potentiometer kom cov zis sib npaug rau cov nqi tso tawm tag nrho (piv txwv li, 20mA).

 

7. Rov ua cov kauj ruam 5 thiab 6 ob peb zaug txhawm rau txhim kho cov khoom tso tawm kom raug.

 

8. Lub calibration tiav.

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