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Dwyer WHT-311 Weather-Resistant Humidity and Temperature Transmitter
- Regular price
- $255.00
- Sale price
- $255.00
- Regular price
-
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Product Description P/N: WHT-311
Description
Dwyer WHT-311 is a weather-resistant transmitter that measures relative humidity and temperature for outdoor air monitoring. It provides separate 4–20 mA outputs for humidity and temperature and includes a removable sintered filter to protect the humidity sensor.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Dwyer |
| Category | Humidity and Temperature Measurement |
| Part Number | WHT-311 |
| Subcategory | Humidity/Temperature Transmitters |
| Series | WHT |
| Relative humidity range | 0–100% RH |
| Temperature range | -40 to 140°F (-40 to 60°C) |
| Humidity sensor | Polymer capacitance |
| Humidity accuracy | ±2% RH at 20–80% RH; ±3% RH at 10–20% and 80–90% RH |
| Output signals | 4–20 mA for humidity and temperature |
| Supply voltage | 10–35 VDC |
| Response time | 15 seconds |
| Enclosure rating | NEMA 3S (IP54) |
| Weight | 8.5 g |
Information About WHT-311
The WHT-311 is part of Dwyer’s Series WHT transmitter family, designed for compact installation in outdoor and air-handling applications. Its polymer capacitance sensor measures relative humidity across a 0–100% RH range, while a solid-state sensor measures temperature. The loop-powered transmitter operates from a 10–35 VDC supply and uses removable screw terminals for electrical connections. Its NEMA 3S (IP54) enclosure is suited to protection from wind-blown dust and rain.
Key Features:
-
Humidity and Temperature Monitoring: Measures relative humidity and ambient temperature for outdoor and HVAC applications.
-
Relative Humidity Range: Measures 0–100% RH with specified accuracy of ±3% under standard conditions.
-
Dual 4–20 mA Outputs: Provides separate analog outputs for humidity and temperature monitoring.
-
Polymer Capacitive Sensor: Uses a capacitive polymer sensing element for relative humidity measurement.
-
Temperature Measurement: Includes a temperature sensor with a 4–20 mA output for compatible monitoring systems.
-
Weather-Resistant Housing: Features a compact enclosure designed to meet NEMA 3S (IP54) protection requirements.
-
Sintered Protective Filter: Uses a removable filter to protect the sensor from solid contaminants.
-
Wide Operating Temperature: Supports ambient temperatures from −40°F to 140°F (−40°C to 60°C).
-
Flexible System Integration: Operates from a 10–35 VDC supply and connects to compatible building automation and HVAC controllers.
-
Outdoor HVAC Applications: Suitable for air-handling economizers, agricultural facilities, and environmental monitoring.
The WHT-311 delivers dependable humidity and temperature measurement for outdoor HVAC systems, building automation, and environmental monitoring applications.
Description
Dwyer WHT-311 is a weather-resistant transmitter that measures relative humidity and temperature for outdoor air monitoring. It provides separate 4–20 mA outputs for humidity and temperature and includes a removable sintered filter to protect the humidity sensor.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Dwyer |
| Category | Humidity and Temperature Measurement |
| Part Number | WHT-311 |
| Subcategory | Humidity/Temperature Transmitters |
| Series | WHT |
| Relative humidity range | 0–100% RH |
| Temperature range | -40 to 140°F (-40 to 60°C) |
| Humidity sensor | Polymer capacitance |
| Humidity accuracy | ±2% RH at 20–80% RH; ±3% RH at 10–20% and 80–90% RH |
| Output signals | 4–20 mA for humidity and temperature |
| Supply voltage | 10–35 VDC |
| Response time | 15 seconds |
| Enclosure rating | NEMA 3S (IP54) |
| Weight | 8.5 g |
Information About WHT-311
The WHT-311 is part of Dwyer’s Series WHT transmitter family, designed for compact installation in outdoor and air-handling applications. Its polymer capacitance sensor measures relative humidity across a 0–100% RH range, while a solid-state sensor measures temperature. The loop-powered transmitter operates from a 10–35 VDC supply and uses removable screw terminals for electrical connections. Its NEMA 3S (IP54) enclosure is suited to protection from wind-blown dust and rain.
Key Features:
-
Humidity and Temperature Monitoring: Measures relative humidity and ambient temperature for outdoor and HVAC applications.
-
Relative Humidity Range: Measures 0–100% RH with specified accuracy of ±3% under standard conditions.
-
Dual 4–20 mA Outputs: Provides separate analog outputs for humidity and temperature monitoring.
-
Polymer Capacitive Sensor: Uses a capacitive polymer sensing element for relative humidity measurement.
-
Temperature Measurement: Includes a temperature sensor with a 4–20 mA output for compatible monitoring systems.
-
Weather-Resistant Housing: Features a compact enclosure designed to meet NEMA 3S (IP54) protection requirements.
-
Sintered Protective Filter: Uses a removable filter to protect the sensor from solid contaminants.
-
Wide Operating Temperature: Supports ambient temperatures from −40°F to 140°F (−40°C to 60°C).
-
Flexible System Integration: Operates from a 10–35 VDC supply and connects to compatible building automation and HVAC controllers.
-
Outdoor HVAC Applications: Suitable for air-handling economizers, agricultural facilities, and environmental monitoring.
The WHT-311 delivers dependable humidity and temperature measurement for outdoor HVAC systems, building automation, and environmental monitoring applications.
