Isolated temperature transmitter,deliver the field thermocouple(TC) or thermal resistance(RTD) signal by digital linearization, converted to linearly with temperature of 4~20mA current and output isolatiedly.
Intrinsically safe temperature transmitter with RTD input has sensor disconnection alarm, TC input has sensor disconnection alarm and cold junction compensation automatically. By special software parameters such as range of transmitter, indexing number configurated.
| CZWB110-EX | CZWB120-EX | CZWB130-EX | |
| Input signal | Pt100,Cu100,Cu50 | T、E、J、K、N、R、S、B | Pt100,Cu100,Cu50 T、E、J、K、N、R、S、B |
| Compensation range | -20℃~+60℃ | -20℃~+60℃ | |
| Cold junction compensation accuracy | ±1℃ | ±1℃ | |
| Output current | 4~20mA | 4~20mA | 4~20mA |
| Current output load resistance | RL≤(Ue-12)/0.021 | RL≤(Ue-12)/0.021 | RL≤(Ue-12)/0.021 |
| Alarm indication | IH≈20.8mA/IL≈3.8mA | IH≈20.8mA/IL≈3.8mA | IH≈20.8mA/IL≈3.8mA |
| Supply voltage(Ue) | 12~28V DC | 12~28V DC | 12~28V DC |
| Power supply mode | Loop powered | Loop powered | Loop powered |
| Temperature drift | 0.01%F.S./℃ | 0.01%F.S./℃ | 0.01%F.S./℃ |
| Response time | Reach 90% of final value in 1s | Reach 90% of final value in 1s | Reach 90% of final value in 1s |
| Dielectric strength(between input and output ) | 1500V DC;1min | 1500V DC;1min | 1500V DC;1min |
| Insulation resistance | ≥100MΩ | ≥100MΩ | ≥100MΩ |
| Electromagnetic compatibility | GB/T 18268(IEC 61326-1) | GB/T 18268(IEC 61326-1) | GB/T 18268(IEC 61326-1) |
| Ambient temperature | T4:-40℃~+60℃ T6:-40℃~+50℃ | T4:-40℃~+60℃ T6:-40℃~+50℃ | T4:-40℃~+60℃ T6:-40℃~+50℃ |
| EX marking | Ex iaⅡC T4/T6 Ga | Ex iaⅡC T4/T6 Ga | Ex iaⅡC T4/T6 Ga |

1. Authoritative safety certification, 100% explosion-proof guarantee
Our intrinsically safe rtd temperature transmitters have passed the world's most stringent ATEX/IECEx explosion-proof certification, ensuring absolute safety in flammable and explosive environments, fundamentally eliminating the risk of explosion.
2. Accurate, stable, and long-term reliable
Ultra-high accuracy of ±0.1%, adapting to extreme temperatures (-50°C~+300°C), more than 10 years of stable operation, no frequent maintenance required.
3. Real-time monitoring, early warning
Instantly sense temperature anomalies, directly connect to the control system, issue an alarm at the first time to avoid accidents from expanding.
4. Industry trust, strength testimony
Global energy giants have long selected our intrinsically safe rtd temperature transmitters, and 5000+ devices have continued to operate stably under harsh working conditions, which is trustworthy.