About Wall Mount Humidity/TemperatureTransmitter
Dwyer Wall Mount Humidity sensor
Combine the voltage or current humidity transmitter output with a passive temperature thermistor or RTD output. The polymer capacitance humidity sensor is not affected by condensation, fog, high humidity, or contaminants. The humidity sensors are available with 2%, 3% or 5% accuracies.Duct mounted transmitters are available with an optional two-line alpha numeric LCD display. The Series RHP is available with interchangeable filter options as well as replaceable sensors.
SPECIFICATIONS:
- Relative Humidity Range: 0 to 100% RH.
- Temperature Range: -40 to 140°F (-40 to 60°C) for thermistor and RTD sensors. -20 to 140°F (-28.9 to 60°C) for solid state band gap temperature sensors.
- Dew Point Temperature Range: -20 to 140°F (-28.9 to 60°C); 0 to 100°F (-17.8 to 37.8°C); 40 to 90°F (4.4 to 32.3°C); -4 to 140°F (-20 to 60°C) fieldselectable ranges.
- Accuracy: RH: Model RHP-2XXX ±2% 10-90% RH @ 25°C; Model RHP-3XXX ±3%, 20-80% RH @ 25°C; Model RHP-5XXX ±5% 20-80% RH @ 25°C;
- Thermistor temperature sensor: ±0.36°F @ 77°F (±0.2°C @ 25°C);
- RTD temperature sensor: DIN Class B; ±0.54°F @ 32°F (±0.3°C @ 0°C);
- Solid state band gap temperature sensor: ±0.9°F @ 77°F (±0.3°C @ 25°C).
- Hysteresis: ±1%.
- Repeatability: ±0.1% typical.
Temperature Limits:
- Operating: -40 to 140°F (-40 to 60°C);
- Storage: -40 to 176°F (-40 to 80°C).
Compensated Temperature Range: -4 to 140°F (-20 to 60°C).
4-20 mA Loop Powered Outputs:
Power requirements: 10 to 35 VDC; Output signal: 4 to 20 mA, 2 channels for humidity/solid state temperature sensor models (loop powered on RH). Switch selectable RH/dew point. Switch selectable normal or reverse output.
0-5/10V Outputs:
Power Requirements: 15 to 35 VDC or 15 to 29 VAC; v Output Load: 5 mA max., 2 channels for humidity/solid state temperature sensor models. Switch selectable 0-10V/2-10V or 0-5V/1-5V output. Switch selectable RH/dew point. Switch selectable normal or reverse output.
Solid State Band Gap Temperature Sensor Output Ranges: Switch selectable,
-20 to 140°F (-28.9 to 60°C); 0 to 100°F (-17.8 to 37.8°C); 40 to 90°F (4.4 to 32.3°C); -4 to 140°F (-20 to 60°C).
- Response Time: 15 seconds.
- Electrical Connections: Screw terminal block.
- Drift: <1% RH/year.
- RH Sensor: Capacitance polymer.
- Enclosure Material: Warm gray polycarbonate.
- Display: Optional LCD, backlit on 0-5/10V models. Switch selectable %RH or dew point, °F/°C.
- Display Resolution: RH: 1%; Temperature: 0.1°F (0.1°C); Dew Point: 1°F (1°C).
- Weight: 0.3 lb (0.14 kg).
- Agency Approvals: CE.
ACCESSORIES:
- A-449, Remote LCD Display allows remote indication of select Dwyer Wall Mount Transmitters for validation or certification purposes
- SCD-PS, 100-240 VAC/VDC to 24 VDC Power Supply
Precision in Environmental MonitoringThis transmitter excels in delivering accurate and reliable humidity and temperature readings for indoor spaces. With high sensitivity and a minimal zero drift design, it provides precise control for critical applications such as building management and laboratory environments. The robust digital capacitive polymer sensor guarantees long-term measurement stability and quick response times.
Robust Design and AdaptabilityHoused in a compact, IP54-rated plastic enclosure, the transmitter supports wall-mounted installation and fits seamlessly into various setups. Its operation accommodates a wide range of temperatures and humidity, while built-in overvoltage protection and RoHS compliance enhance its safety and eco-friendliness. Customizable cable lengths ensure flexible placement based on user requirements.
User-Friendly Operation and Flexible OutputDesigned for ease of installation and use, the transmitter provides an optional LCD display for straightforward monitoring. The analog 4-20 mA output allows compatibility with standard control systems. Factory calibration ensures out-of-the-box accuracy, though field recalibration can be performed for maintenance, maximizing operational confidence.
FAQ's of Wall Mount Humidity/TemperatureTransmitter:
Q: How is the Wall Mount Humidity/Temperature Transmitter installed?
A: The transmitter is designed for easy wall-mounted installation using standard mounting hardware. Its compact dimensions (120 x 80 x 30 mm) and customizable cable length make it suitable for a variety of indoor locations including HVAC units, laboratories, and greenhouses.
Q: What are the main advantages of using this transmitter?
A: This device offers high accuracy (2% RH, 0.3C), rapid measurement response (<10 seconds), and long-term stability (<1% RH drift/year). Additional benefits include factory calibration, overvoltage protection, and a robust IP54-rated enclosure, making it ideal for stable, reliable indoor environmental monitoring.
Q: When is recalibration of the transmitter necessary?
A: Although the unit is factory calibrated for optimal accuracy, field recalibration may be advised periodically based on the application's requirements, especially if used in critical settings or after prolonged periods of operation to ensure measurement precision.
Q: Where can this transmitter be effectively utilized?
A: It is suitable for use in building automation, HVAC systems, laboratories, greenhouses, and other controlled indoor environments across commercial, industrial, and research sectors where accurate humidity and temperature monitoring is essential.
Q: What technology does the transmitter use to measure humidity and temperature?
A: The unit employs a solid-state digital capacitive polymer sensor, providing high sensitivity and quick response, with analog 4-20 mA output for straightforward integration into standard monitoring or automation systems.
Q: How does the built-in overvoltage protection benefit the user?
A: The integrated overvoltage safeguard defends the device against electrical surges, protecting the transmitter and connected systems from potential damage, thereby enhancing operational reliability and device lifespan.