Details 
 WRNK-181, WREK-181-handle-type thermocouple, also known as hand-held thermocouple designed for measuring a variety of shapes and solid medium surface temperature measurement of liquid, gas temperature. Handle type thermocouple with a wide range, from the shape of the surface constraints, thin, light and easy to carry, handle-type thermocouple with a diameter as small, flexible, anti-vibration, fast thermal response time and fastening durable, reliable of advantages, the products used in conjunction with the digital display device can be directly measured and displayed in different production processes within the scope of 0 ~ 1200 ℃ the temperature of the various media, is widely used in metallurgy, chemical, textile, printing and dyeing, paper, rubber , plastics, ceramics, silos and other industrial sectors and enterprises. 



 Model Specifications 

 Model 
 Indexing number 
 Temperature Range ℃ 
 Thermal response time t0.5s 
 Protection tube material 

 WREK-181 
 E 
 0-400 
 <5 
 Stainless Steel 1Cr18Ni9Ti 

 WRNK-181 
 K 
 0-1200 
 <5 
 Stainless Steel 1Cr18Ni9Ti 




 Handle Thermocouple response time: 
 Step change in temperature occurs when changes in the thermocouple output to the equivalent of 50% of the step change in the time required is called thermal response time, with τ0.5 said. 
 Handle type thermocouple thermal response time of less than the provisions of the following table: 

 Thermal response time τ0.5S 
 Shell access 
 Insulated 

 Tube diameter (mm) 

 2.0 
 0.4 
 0.5 

 3.0 
 0.6 
 1.2 

 4.0 
 0.8 
 2.5 

 5.0 
 1.2 
 4.0 

 6.0 
 2.0 
 6.0 

 8.0 
 4.0 
 8.0