| Detailed introduction |
1、application It is suitable for temperature measurement and control in high temperature and high pressure places in petroleum, chemical and other production processes. It is an indispensable temperature device such as refinery and high-pressure polyethylene. 2、The main technical parameters
Electrical outlet: M20x1.5, NPT1/2 Connection size: M20x1.5, NPT1/2 Protection level: IP65 Flameproof rating: d‖BT4, d‖CT5 Nominal pressure: 15-40MPa
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3、Models and Specifications
model
| Index number | Measuring range℃ | thermal response time | Protective 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 Class I is ordered by agreement;
2) The rest of the protective tube is ordered according to the agreement;
3) Model 430 is waterproof and model 440 is explosion-proof.
4、Protection tube material and selection
and usesUltra low carbon content, good resistance to intergranular corrosion, usually used as heat resistant steel
| Material | Service temperature℃ | Characteristics and uses |
| 1Cr18Ni9Ti | -200 — 800 | High temperature corrosion resistance, usually used for general heat resistant steel |
| 304 | -200 — 800 | Low carbon content, good resistance to intergranular corrosion, usually used as general heat resistant steel |
| 316 | -200 — 750 | Low carbon content, good resistance to intergranularity, usually used as heat resistant steel |
| 316L | -200 — 750 | |
| 310S | -200 — 1000 | High temperature oxidation resistance, corrosion resistance, usually used as heat resistant steel |
| GH3030 | 0 — 1100 | Nickel-based superalloy steel with excellent oxidation resistance and corrosion resistance, usually used as heat-resistant steel |
5、Casing form selection
Flange selectable900 （ PN15 ）— 2500LB （ PN40 ） RJ Equivalent forms。
| 代 号 | N | M | D | d | D1 | D2 |
| A | M20x1 ． 5(NPT1/2) | NPT1 ″ | Φ34 | Φ9 | Φ23 | Φ18 |
| B | NPT11/4 ″ | Φ45 | Φ9 | Φ28 | Φ23 |
6、Flange model and specifications
Flange standard code
Standard code | File No |
Chinese national standard | GB9112-9131-88 |
China Ministry of Chemical Industry Standard | HG20592-20635-97 （ HGJ44-76-91 ） （ HG5001-5028-58 ） |
China Machinery Ministry Standard | JB/T74-90-94 （ JB81-82-59 ） |
American standard | ASME/ANSI B16 ． 5-88 |
German standard | DIN 2628-2638-1975 |
Japanese standa | JIS2201-1796 |
7、Flange specification
CLASS150-600 RF
CLASS900-2500 RJ
8、Selection instructions
1）model
2）Index number
3）Accuracy level
4）Protection tube material and form
5）Flange specifications and forms
6) Length or insertion depth
Example A: High temperature and high pressure flameproof thermocouple K type 1 protection tube A type insertion depth 300mm. WRNG-440A L × 1=450 × 300 mm. d Ⅱ BT4 316L ANSI 1 ″ 1500 ＃ RJ
