Details 
 1, the application 

 For petroleum and chemical production process of high temperature and pressure temperature measurement and control sites. Refineries, high-pressure polyethylene and other essential temperature device. 

 2, Main technical parameters 

 Electrical Export: M20x1.5, NPT1 / 2 
 Connection Size: M20x1.5, NPT1 / 2 
 Protection: IP65 
 Explosion-proof grade: d ‖ BT4, d ‖ CT5 
 Nominal pressure :15-40MPa 

 3, model and specification 

 Model No. indexing ℃ temperature range thermal response time of the protection tube material specifications Lxl 
 WRNG-430 

 WRN2G-430 
 K 0-800 <180S 1Cr18Ni9Ti 380x150 

 430x200 

 480x250 

 530x300 

 580x350 

 630x400 

 680x450 

 WREG-430 

 WRE2G-430 
 E 0-600 
 WRNG-440 

 WRN2G-440 
 K 0-800 
 WREG-440 

 WRE2G-440 
 E 0-600 

 1) Thermocouple order Class I of the agreement; 
 2) Protection tube material remaining orders under the agreement; 
 3) Model 430 for the waterproof type, model 440 for the explosion-proof type. 


 4, protection tube material and selection 

 Material characteristics and uses of temperature ℃ 

 1Cr18Ni9Ti -200 - 800 with a high-temperature corrosion resistance, usually used for general heat-resistant steel 
 304-200--800 low carbon content, with good resistance to intergranular corrosion, heat-resistant steel is usually used as a general 
 316-200--750 low carbon content, with good resistance to intergranular often used as a heat-resistant steel 
 316L -200 - 750 ultra-low carbon content, with good resistance to intergranular corrosion, often used as a heat-resistant steel 
 310S -200 - 1000 with high-temperature oxidation resistance, corrosion resistance, often used as a heat-resistant steel 
 GH3030 0 - 1100 high-temperature nickel-based alloy with excellent oxidation resistance, corrosion resistance, often used as a heat-resistant steel 

 5, the casing forms of selection 

 Optional flange 900 (PN15) - 2500LB (PN40) RJ and other forms. 

 Code NMD d D1 D2 
 A M20x1. 5 (NPT1 / 2) NPT1 "Φ34 Φ9 Φ23 Φ18 
 B NPT11 / 4 "Φ45 Φ9 Φ28 Φ23 

 6, flange type and size 

 Flange Code 

 Standard Code Document No. 
 Chinese national standard GB9112-9131-88 
 Chinese Ministry of Chemical Industry standard HG20592-20635-97 

 (HGJ44-76-91) 

 (HG5001-5028-58) 

 Chinese Ministry of Machinery Standard JB/T74-90-94 

 (JB81-82-59) 

 American Standard ASME / ANSI B16. 5-88 
 German standard DIN 2628-2638-1975 
 Japanese standard JIS2201-1796 

 7, flange size 

 CLASS150-600 RF 
 CLASS900-2500 RJ 

 8, Selection Notice 

 1) Model 
 2) Index No. 
 3) Accuracy 
 4) Protection tube material and form 
 5) flange size and form 
 6) The length or depth of insertion 

 Example A: K-type thermocouple high temperature and pressure explosion-proof protection of an A-type tube insertion depth of 300mm. WRNG-440A L × 1 = 450 × 300 mm. D Ⅱ BT4 316L ANSI 1 "1500 # RJ