Temperature Transmitter

OHR-WS20 Series Temperature Transmitter

OHR-WS20 series integrated humiture transmitters’ circuits use the imported microprocessor chip, imported high-precision humiture sensor to ensure the excellent reliability of humiture transmitter, which are characterized of high precision, strong stability and fast response. It can measure and control the humiture of the measured environment at the same time and suitable for humiture measurement in communication rooms, offices, hospitals, archives, museums, hotels, building automation etc.

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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

 

 

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