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Explosion-proof and intrinsic safety thermocouple
Brief DescriptionWREK2-440 Explosion-proof and intrinsic safety type thermocouple is a temperature sensor, widely applied in the chemical industrial automatic control system. It transfers the object temperature to electrical signal, and sends it to display, record and adj
DetailsIn chemical plant, the production field is often accompanied with various inflammable, explosive chemical gas & steam, it’s not safe to use common thermocouple which is easy to result in gas explosion. Therefore, explosion-proof and intrinsic safety type thermocouple is necessary. Our explosion-proof and intrinsic safety type thermocouple are used in these dangerous occasions of which temperature group zone are dII BT4 ~ dII CT6, ib II BT4, ia ll BT4, ia ll CT6.
| Model | Graduation | Range ℃ | Accuracy | Allowable deviation |
| WRN,WRNK WRN2,WRNK2 |
K | 0～800℃ | I | ±1 5℃ or ±0. 004 t |
| Ⅱ | ±2.5℃ or ±0．0075t | |||
| WRE,WREK WRE2,WREK2 |
E |
0～600℃ | I | ±1.5℃ or ±0.004t |
| Ⅱ | ±2 5℃ or ±0 0075 t |
Specifications
| Model | Graduation | Measure range | Structure | Protection tube diameter (mm) | Insertion length l(mm) | Response time T0.5s | Nominal pressure (MPa) | Exd grade |
| WRNK-240 WRNK2-240 | K | 0~800 | M27×2
Fixed thread | Φ8
Φ6
Φ5 |
Based on flange size | ≤8
≤6
≤4 | 10 | dIIBT4 dIIBT6 or dlICT4 dIICT6 |
| WREK -240 WREK2-240 | E | 0~600 | ||||||
| WRNK- 440 WRNK2-440 | K | 0~800 |
Fixed flange | 6.4 | ||||
| WREK-440 WREK2-440 | F | 0~600 |
