Brief Description

The WRNN-631 wear resistance thermocouple adopts different strength wearresistance protection tube due to different temperature ranges and medium whichconstitute compound tube type solid structure, thus it’s applicable tooccasions which may cause heavy wear like petrochemical industry, coaltransmission system, fluidized bed boiler, cement clinker and fire-proofmaterial etc.

The WRNN-631 wear resistance thermocouple from our company is ofinternational level with advanced technology, the special wear resistancematerial guarantee its long-service life (1~2 years) without influence onmeasuring lag. Protection tube is wear resistance, high-temperature oxidationresistant, as well as vulcanization-resistant, liquid iron powder resistant,limestone resistant, rush-resistant, vibration-resistant etc.

Name   Graduation   Measure range（℃）   Allowed Deviation  △t(℃)  

Nickel chromium-nickel silicon   K   0~600   ±2.5℃ or±0.0075∣t∣  

Nickel chromium-copper nickel   E  

Other technical indicators conform to JB / T9238-1999industrial thermocouple technical conditions and JB / T8622-1997 technical conditions.

Model of WRNN-631 wearresistance thermocouple

Wear  resistance thermocouple  

Model   Graduation   Coating   Measure range（℃）   Protection tube diameter   Spec  

WRNN-130(*)WRNN-230(*)WRNN-330(*)WRNN-430(*)   K   Ni60   0~600   16+1.5   300×150 350×200 400×250 450×300 550×400 650×500 900×750 1150×1000 1650×1500 2150×2000  

WRNN2-130(*)WRNN2-230(*)WRNN2-330(*)WRNN2-430(*)  

WREN-130WREN-230WREN-330WREN-430   E  

WREN2-130WREN2-230WREN2-330WREN2-430  

WRNN-530(*)   K   500×500 750×750  

WRNN2-530(*)  

WREN-530   E  

WREN2-530  

WRNN-631(*)   K   d+1.5   225×75 250×100 300×150 350×200 400×250  

WRNN2-631(*)  

WREN-631   E  

WREN2-631  

Special coating and temperature range below:

Wear  resistance thermocouple  

（*）   Coating   Measure range ℃  

B   WG1   0~800℃  

C   WG2   0~1000℃  

Note: For special requirement of the WRNN-631 wear resistance thermocouple, please contact the manufacturer.