Features
- Full switching of temperature signal
- Using photoelectric isolation technology
- RS485 communication interface
- Relay alarm output
- Low power consumption and low heat generation
- Support transmission output
- Smart appearance and high cost performance
- Transmission accuracy: 0.2%FS (20°C)
- I/O/power isolated from each other
Applications
- Detection, conversion and transmission of temperature in industrial automation control
- In the field of environmental monitoring, the measurement and transmission of atmospheric temperature, water temperature, ground temperature and other parameters are realized
- Used in weather stations, hydrological stations, geological exploration and other fields
- In the field of medical equipment, it realizes the monitoring and transmission of patient body temperature.
- Applied to the cold chain logistics industry to monitor and record the ambient temperature of logistics vehicles and cold storage
Specification
| Measurement scope | Temperature: -40～120℃ |
| Humidity: 0～100%RH | |
| Dew point: -50～100℃ (no display，without such function) | |
| Accuracy | Temperature: ±0.5℃ (25℃) |
| Humidity: ±3%RH (5～95%RH，25℃) | |
| Working conditions of the electric circuit | Temperature: -20～60℃ |
| Humidity: 5～95%RH | |
| Long-term stability | Temperature: ≤0.1℃/y |
| Humidity: ≤1%RH/y | |
| Input signal | Probe signal: SHT21 probe |
| Output signal | Transmission output: 0～20mA, 4～20mA (Load resistance≤500Ω） |
| Alarming output: Relay output, contact capacity: AC220V/2A (Resistive load) | |
| Communication output: RS485 and RS232 communication interfaces, standard MODBUS RTU communication protocol | |
| Characteristic | LCD display: temperature℃, humidity% RH, dew point℃, alarming reminding H/L, time |
| Display resolution: 0.1℃, 0.1%RH | |
| Sensor characteristics: Repeatability≤0.1℃, ≤0.5%RH; annual offset≤0.1℃，≤1%RH | |
| Response time: ≤15s (1m/s air velocity) | |
| Power supply: DC 24V (±10%) | |
| Installation method: Wall-mounted |
