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Resistance Temperature Detector (RTD) for industry
Resistance Temperature Detector (RTD) for industry

Minimum Order: 0
Quality/Safety Certification: 0.00


1.Gained CE and ISO9001:2000
2.High quality and competitive price
3.Can be widely supplied as customer's demands

Resistance temperature detector (RTD)

  

The Resistance Temperature Detector(RTD) is a sensor, which operates on the principle that the resistance increases with an increase in temperature at a specific rate. Commonly manufactured using a platinum resistance element. It is more accurate and more linear than thermocouples and generally slower responding. It is usually measure the temperature range of -200~600°C, connected with display instrument, recording meter and computer, etc. to directly measure temperature of liquid, gas, solid surface.


Features:

      Small external diameter, quick heat responsive period, may be bent, long use life, fine air-tightness, wide thermometric scope, high voltage resistant, anti-vibration, narrow mounting pipeline, may be used under bending conditions.


Working principle:

RTD measure temperature according to the characteristic of metal wire changes electrical resistance along with temperature, the thermoelement of RTD is made by metal wire be wound on the surface of insulation skeleton. If there is temperature gradient in the measured medium, the measured temperature is an average temperature of element in the range of the medium zone.


Temperature measuring range and Tolerances

Calibration

Nominal resistance(0°C) Ω

Temperature measuring range °C

tolerance

R100/ Ro

w

Pt10

10

ceramic elements:-200 ~ 600

mica elements: -200 ~ 420

ClassA: ±(0.15+0.2%|t|)

ClassB: ±(0.3+0.2%|t|)

 1.3851

Pt100

100

Cu50

50

-50 ~ 100

±(0.3+0.6%|t|)

1.4280

Cu100

100

Note: The Tolerances of other calibration may consult the above RTD tolerances scope.


thermal response time

Diameter of protective(mm)

Material of protective

Thermal response time(s)

Platinum resistance

12

Carbon steel:20                       Stainless steel:0Cr18Ni12Mo2Ti;1Cr18Ni9Ti

30~90

16

Taper protective tube

Stainless steel :1Cr18Ni9Ti

90~180

Copper resistance

16

Brass:H62     Carbon steel:20  Stainless steel:1Cr18Ni9Ti

<180




Diameter of protective tube(mm)

Length  L

12

225,250,350,400,450,550,650,900,1150

16

300,350,450,500,650,900,1150,1650,2150

Taper protective tube

225,250,300,400



 

 

 

 

 

 

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