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Assembly thermal resistance

 

    Industrial heat resistance as a temperature measurement sensor, usually display instruments, recording and supporting the use of electronic regulator, which can directly measure or control a variety of production processes within -200 ¡æ -600 ¡æ of liquid, vapor and gases, and Solid surface temperature.

    According to state regulations, I produced the dividing line with international standards IEC Pt100 platinum resistance issue and in accordance with professional standards sub-degree numbers Cu50 copper fabricated two types of thermal resistance, thermal resistance unified design¡£

The main technical indicators:
Temperature measurement range and tolerance

Thermal resistance categories

Temperature range¡æ

Dividing number

Tolerance¡÷t¡æ

WZP platinum resistance

-200¡«600

Pt100

B-level (-200 ~ 600 ¡æ? tolerance¡À(0.30+0.005|t|)

A-level(-200¡«550¡æ) tolerance¡À(0.15+0.002|t|)

WZC copper resistance

-50¡«100

Cu50

-50¡«100¡æ tolerance¡À(0.3+6.0¡Á10-3t)

Note: where "t" for the temperature sensing element absolute value of the measured temperature¡£

 

RTD temperature sensing element 100 ¡æ, the resistance value (R100) and its resistance at the R0 0 ¡æ, the ratio of: (R100/R0£©

Dividing numberPt100£ºA R0=100¡À0.06¦¸
¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B R0=100¡À0.12¦¸
¡¡¡¡¡¡¡¡¡¡¡¡¡¡ R0/R100=1.3850
Dividing numberCu50:R0=50¡À0.05¦¸
¡¡¡¡¡¡¡¡¡¡¡¡ R0/R100=1.428¡À0.02

 
¡ñ Model representation
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