Thermocouple assembly 
 Product Code: 002010051501 
 Model: WRN-130 WRN-230 WRN-330 WRN-430 WRN-530 WRN-630 
 Product Note: Thermocouple order by agreement 
 Category: → K-type thermocouple thermocouple 

 Fabricated as industrial thermocouple sensors to measure temperature, usually, and display instruments, recording instruments and supporting the use of electronic regulator. It can be measured directly from the various production processes range of 0 ℃ ~ 1800 ℃ within the liquid, vapor, gas and solid surface temperature. 
 According to state regulations, our factory started production in 1987 in accordance with IEC international standard platinum-rhodium sub-degree No. 30 - platinum and rhodium 6-- platinum and rhodium 10 - platinum, nickel, chromium - nickel-silicon, nickel, chromium - copper-nickel, copper - copper-nickel , iron - copper-nickel and other types of thermocouple. 
 Specifications and parameters 
 □ Main Technical Specifications 

 ◆ Temperature measuring range and tolerances 
 Thermocouple type code indexing Measuring range Tolerance △ t ℃ ℃ 
 Platinum and rhodium 30 - platinum and rhodium 6 WRR B 0 ~ 800 ± 1.5 ℃ or ± 0.25% t 
 Platinum and rhodium 10 - Platinum WRP S 0 ~ 1600 ± 1.5 ℃ or ± 0.25% t 
 Nickel-chromium - nickel silicon WRN K 0 ~ 1300 ± 2.5 ℃ or ± 0.75% t 
 Nickel-chromium - copper-nickel WRE E 0 ~ 800 ± 2.5 ℃ or ± 0.75% t 
 ◆ thermal response time 
 Step change in temperature occurs when the output of the thermocouple changes to the equivalent of 50% of the variation, known as the time required for thermal response time, said with a t0.5 
 □ Model that 
 WR □ - □ □ □ 
 W Temperature Meter 
 R thermocouple 
 □ thermocouple materials R) platinum-rhodium 30 - 6 platinum and rhodium 
 P) platinum and rhodium 10 - Platinum 
 N) nickel chromium - nickel silicon 
 E) nickel-chromium - copper-nickel (nickel chromium - constantan) 
 □ Install a fixed form of 1) no fixed plant type 
 2) Fixed screw-type 
 3) The movable flange 
 4) Fixed Flange 
 5) Square Flange form of activity 
 6) protection of fixed threaded conical tube 
 □ junction box in the form 2) splash-type 
 3) water-type 
 4) Explosion-proof type 
 □ Design No. 0)? 16mm protection tube 
 1)? 25mm protection tube (double sleeve) 
 2)? 16mm high aluminum tube (single tube) 
 3)? 20mm high aluminum tube 
 ◆ Thermocouple nominal pressure 
 Generally refers to the case at room temperature, static protection tube can withstand external pressure without rupture. In fact, the allowable working pressure not only with the protection tube material, diameter, wall thickness, but also on its structure, installation method, into the depth and the measured flow rate and type of media and so on. 

 ◆ Minimum placement depth of the thermocouple 
 Protection tube should be not less than the diameter of 8 to 10 times (special product exceptions). 

 ◆ Thermocouple Insulation resistance (at room temperature) 
 Temperature insulation resistance test voltage DC 500V ± 50V, measuring insulation resistance of atmospheric conditions at room temperature for the temperature 15 ~ 35 ℃, 45% relative humidity, atmospheric pressure 86 ~ 106kPa. a. For more than 1 m length of the thermocouple temperature insulation resistance value of its product of its length should be not less than 100MΩ. M. 
 That Rr.L ≥ 100 MΩ. ML> 1m where: Rr-thermocouple length, m b. For length equal to or less than 1 meter of thermocouple, its temperature insulation resistance value should be not less than 100 MΩ 

 ◆ maximum temperature insulation resistance 
 Maximum temperature of the thermocouple insulation resistance should not be less than under the performance that: 
 Maximum temperature tm ℃ test temperature t ℃ MΩ resistance 
 100 ≤ tm <300 t = tm 10 
 300 ≤ tm <500 t = tm 2 
 500 ≤ tm <850 t = tm 0.5 
 850 ≤ tm <1000 t = tm 0.08 
 1000 ≤ tm <1300 t = tm 0.02 
 tm> 1300 t = 1300 0.02 
 ◆ Work 
 Thermocouple works: two different components of the conductor at both ends by welding to form a loop, called the direct temperature measurement terminal end, called the terminal end of the reference junction. When measuring side and reference side temperature difference, it will generate heat in the loop current, connected to the display instrument, the instrument on the instructions of the thermocouple, the thermal electromotive force corresponding to the temperature. Thermocouple measuring the thermal electromotive force will end with the growth temperature and thermal emf of the thermocouple conductor size and material, and only the temperature difference on both ends, and the hot electrode length, diameter has nothing to do. 
 Fabricated mainly by the thermocouple junction box to protect the tubes, insulation sleeves, terminals, heat the electrode components of the basic structure and composition together with a variety of mounting fixtures. Note: This type of specific technical requirements (such as length, thread or flange connection, etc.) may consult with the company. 
 The main technical parameters 
 Product performance standards 
 IEC584 
 GB/T16839-1997 
 JB/T5582-1991 
 Order Notes: 
 1 indicate the thermocouple type, number of sub-degree, temperature. 
 2 thermocouple protection tube diameter and length. 
 3 fasteners, flange units, provide sizes.