Armored Resistance Thermal Detector (RTD)

◆ Application
     Pors-TR(K) series armored RTD are generally, matching with indicator, recorder, PC, used to measure temperature of liquid, steam, gas and solid’s surface within range of -200℃~ 500℃ in producing process; and can work as sensoring element of the fabricated RTD.

◆ Working Principle
     Resistance of RTD varies with temperature change; this feature is used for RTD to measure temperature. When resistance of the RTD changes, the connected indicator will display the corresponding temperature.

◆ Features
     Rapid thermal response, dynamic error reduce; 
     Little diameter, no limit to length;
     High accuracy;
     Imported film resistance element used, performance is stable and reliable;

◆ Standard: The sensors are made complying with standard: IEC60751, JB/T8622-1997

◆ Measuring range and Tolerance

Model	Type	Measuring range ℃		class	Tolerance
TRP	PT100	-200~500		A	±(0.15+0.002|t|)
				B	±(0.30+0.005|t|)

Note: t is temperature of the measured medium;

◆ Insulation resistance  (Normal temperature)
     In temperature of 15~35℃, related humidity is not more than 80%, tested voltage is 10~100V (DC), insulation resistance between electrode and external shetath is more than or equal to 1000MΩ.

◆ RTD's diameter and material

RTD wire		Single			Double
Sheath diameter		Φ3, Φ4, Φ5, Φ6, Φ8			Φ4,Φ5,Φ6,Φ8
Sheath material		1Cr18Ni9Ti			1Cr18Ni9Ti

◆ Thermal response time

Sheath's diameter		Thermal response time (s)
Φ3		≤3
Φ4		≤5
Φ5		≤8
Φ6		≤12
Φ8		≤15

◆ Construction of measuring junction



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