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Temperature sensor
wenduchuanganqi
Petrochemical thermocouple/thermal resistance
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Add Time: 2016-08-20 08:34:20
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Petrochemical thermocouple/thermal resistance的产品详细介绍:

Product description:


application

Professional design for petrochemical industry department, can be directly measured - 200 ℃ to 1600 ℃ within the scope of liquid, steam and gas medium, as well as solid surface temperature measurement.

The working principle of

The thermocouple electrode is composed of two different conductor material.When measuring the temperature difference is with the reference, the can produce thermoelectric power, the instrument will show thermoelectric potential corresponding temperature value.
Thermal resistance is to use the resistance and temperature had a certain function of relationship theory.When the measured medium temperature change, its resistance value also along with the change, the instrument will show resistance corresponding temperature value.

The main technical parameters

Product standards
IEC1515
IEC584
IEC751
JB/T5518-91
JB/T5582-91

Nominal pressure

Generally refers to the normal temperature, protecting tube can withstand static external pressure and not burst.Allows the working pressure is not only related to protecting tube material, diameter, wall thickness, and its structural forms, installation method and the measured medium velocity, species.

Measuring range and tolerance

thermocouple
Type no.Degree,Tolerance level
Tolerance values℃ temperature rangeTolerance values℃ temperature range
WRNKPlus or minus1.5 ℃+ 375-40 -Plus or minus2.5 ℃+ 333-40 -
Plus or minus0.004 ltl375-375.Plus or minus0.0075 ltl333-333.
WREEPlus or minus1.5 ℃+ 375-40 -Plus or minus2.5 ℃+ 333-40 -
Plus or minus0.004 ltl375-375.Plus or minus0.0075 ltl333-333.
WRPSPlus or minus1 ℃0-1100.Plus or minus2.5 ℃0-600.
Plus or minus"1+0.003(t-1100)」1100-1100.Plus or minus0.0025 ltl600-600.
WRQRPlus or minus1 ℃0-1100.Plus or minus2.5 ℃0-1100.
Plus or minus"1+0.003(t-1100)」1100-1100.Plus or minus0.0025 ltl1100-1100.
WRRB
Plus or minus0.0025 ltl600-600.

The thermal resistance

modelDegree,℃ temperature rangePrecision gradeAllowable deviation
WZPPt100- 200 - + 500APlus or minus(0.15+0.002)ltl
BPlus or minus(0.30+0.005)ltl
WZCCu50 Cu100+ 100-50 ---Plus or minus(0.30+0.005)ltl


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