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Brand: Dwyer InstrumentsSKU: WHT-311

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WHT-311 | Water-resistant humidity/temperature transmitter with sintered filter | 3% accuracy | 4-20 mA humidity and temperature output. | Dwyer Instruments

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Dwyer Instruments WHT-311 Documents

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Overview

Details for WHT-311

The WHT-311 Humidity/Temperature Transmitter from Dwyer Instruments precisely measures and transmits relative humidity and temperature data. It features a durable construction and advanced sensor technology to provide accurate and reliable readings in demanding industrial environments. Designed with a 4-20 mA output, the WHT-311 seamlessly integrates with various data acquisition systems and PLCs. Its compact size and rugged housing make it suitable for installation in tight spaces and harsh conditions. The transmitter employs a high-quality humidity sensor and temperature element to ensure precise measurements. The humidity range spans from 0 to 100% RH, while the temperature range covers -40 to 122Â°F (-40 to 50Â°C). Applications include HVAC systems, environmental monitoring, industrial processes, and more. The WHT-311 Humidity/Temperature Transmitter from Dwyer Instruments empowers industrial engineers and maintenance professionals with accurate and reliable data for efficient operation and proactive maintenance. Shop now at our HVAC supply store for the best prices and fast shipping on all your industrial supply needs!

Series WHT Weather-Resistant Humidity/Temperature Transmitter

Compact Housing, Sintered Filter

The compact Series WHT Humidity/Temperature Transmitter is designed to withstand the elements. A removable sintered filter protects the polymer capacitance sensor from solid objects that may come in contact with the transmitter. The transmitter is available with 4 to 20 mA or 0 to 10 VDC output signals for both temperature and humidity. This transmitter is ideal for measuring outside air temperature and humidity levels for air handling economizer applications.

For models with resistive thermistors or RTD outputs, please click here for temperature to resistance lookup tables.

Product Applications

Air handling economizers
Air environment monitoring in agriculture or livestock cultivation houses

RH or RH and temperature outputs
Compact NEMA 3S construction

Specifications

Series: WHT Weather-Resistant Humidity/Temperature Transmitter
Category/Type: Air Quality
Type: Humidity / Temperature Transmitters
Series: WHT Weather-Resistant Humidity/Temperature Transmitter
Relative Humidity Range: 0 to 100% RH.
Temperature Range: -40 to 140°F (-40 to 60°C).
Accuracy; RH: ±3% 20 to 80% RH; ±4% @ 10 to 20%; 80 to 90%.
Accuracy; Temp Models with 4 to 20 mA Temp. Output: ±0.9°F @ 72°F (±0.3°C @ 25°C).
Accuracy; Temp Models with Passive Thermistor Temp Sensor: ±0.36°F @ 77°F (±0.2°C @ 25°C).
Hysteresis; RH: ±1%.
Repeatability; RH: ±0.1% typical.
Temperature Limits: -40 to 140°F (-40 to 60°C).
Storage Temperature: -40 to 176°F (-40 to 80°C).
Compensated Temperature Range; RH: -4 to 140°F (-20 to 60°C).
Power Requirements: 4-20 mA loop powered models: 10-35 VDC; 0-10 V outputmodels: 15-35 VDC or 15-29 VAC; 0-5 V output models: 10-35 VDC or 10-29 VAC.
Output Signal: 4-20 mA loop powered models: 4-20 mA; 0-10 V output models:0-10 V @ 5 mA max; 0-5 V output models: 0-5 V @ 5 mA max.
Response Time: 15 s.
Electrical Connections: Removable screw terminal block.
Drift: <1% RH/year.
RH Sensor: Capacitance polymer.
Temperature Sensor: 4 to 20 mA output; solid state band gap. Passive output: 10K @ 25°C thermistor (Dwyer curve A).
Enclosure: ABS.
Enclosure Rating: Designed to meet NEMA 3S (IP54).
Weight: 0.3 oz (8.5 g).
Agency Approvals: CE.