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DC 12V Digital Signal Isolator
Temperature Transmitter PT100 RTD , TC signal convert to 4-20mA Output
Input
Input signal: thermal resistance (RTD), thermocouple (TC)
Thermal resistance excitation current: 1mA
Thermocouple cold junction compensation: Compensation range: -25°C ~ +75°C (1°C per 20°C error)
Compensation method: internal compensation
Output
Output signal: 4-20mA (loop powered)
Output load resistance: RL ≤ 500Ω
Basic parameters
Power: DC 12-36V
Transmission accuracy: 0.1% F.S., 0.2% F.S.
Over-limit alarm: below the lower temperature limit, output 3.8mA, (4-20mA output); above the upper temperature limit, output 20.5mA
Break alarm: output 22mA or 3.8mA
Temperature drift: 0.005% F.S./°C (-20C ~ +55°C)
Response time: ≤1S (0-90%) (TYP)
Insulation strength: 1 500V AC / 1min (between input, output, and power)
Insulation resistance: ≥100MΩ (between input, output, and power)
Operating temperature range: -20~ +55°C
Electromagnetic compatibility: in accordance with GB/T 18268 (IEC61326-1)
| Input signal type | |||
| Item No. | Type | Measure range | Minimal measure value |
| RTD | Pt100 | -200 to +850℃ | 10℃ |
| Pt500, Pt1000 | -200 to +250℃ | 10℃ | |
| Cu50, Cu100 | -50 to +150℃ | 10℃ | |
| Ni100, Ni500 | -60 to +180℃ | 10℃ | |
| Ni1000 | -60 to +150℃ | 10℃ | |
| TX | B | 0 to +1820℃ | 500℃ |
| E | -270 to +1000℃ | 50℃ | |
| J | -210 to +1200℃ | 50℃ | |
| K | -270 to +1372℃ | 50℃ | |
| N | -270 to +1300℃ | 50℃ | |
| R | -50 to +1768℃ | 500℃ | |
| S | -50 to +1768℃ | 500℃ | |
| T | -270 to +400℃ | 50℃ | |
