Dwyer Series WHT Weather-Resistant Humidity Temperature Transmitter Instructions

June 3, 2024
Dwyer

SERIES WHAT |
WEATHER-RESISTANT HUMIDITY/TEMPERATURE TRANSMITTER

BENEFITS/FEATURES

  • Easy installation into tight spaces with compact NEMA 3S housing
  • Reduced installation costs with a combination of RH and temperature outputs as required

APPLICATIONS

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

DESCRIPTION
The compact Series WHT Weather-Resistant Humidity/Temperature
The 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 4-20 mA or 0-10 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.

SPECIFICATIONS

Relative Humidity Range 0 to 100% RH.
Temperature Range -40 to 140°F (-40 to 60°C).
Sensor Accuracy, RH ±2% © 20 to 80% RH, ±3% © 10 to 20%, 80 to 90% RH.
Accuracy, Temp Models with 4-20 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).
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 output models: 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| 4-20 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).
Compliance| CE.

DIMENSIONS

Dwyer Series WHT Weather-Resistant Humidity Temperature Transmitter -
DIMENSIONS

WIRING DIAGRAM

Dwyer Series WHT Weather-Resistant Humidity Temperature Transmitter - WIRING
DIAGRAM

Models with 4-20 mA RH output, with or without 4-20 mA temperature output![Dwyer Series WHT Weather-Resistant Humidity Temperature Transmitter

Models with 4-20 mA RH output and a passive thermistor temperature sensor

Models with 0-5 V or 0-10 V RH output, with or without 0-5 V or 0-10 V temperature outputDwyer Series WHT Weather-Resistant Humidity Temperature
Transmitter - WIRING DIAGRAM 3

Models with 0-5 or 0-10 V RH output and a passive thermistor temperature sensor
HOW TO ORDER
Use the bold characters from the chart below to construct a product code.Dwyer Series WHT Weather-Resistant Humidity Temperature Transmitter -
WIRING DIAGRAM4

ORDER ONLINE TOD
dwyer-inst.com/Product/SeriesWHT
©Copyright 2022 Dwyer Instruments, LLC Printed in the U.S.A. 3/22
Important Notice: Dwyer Instruments, Inc. reserves the right to make changes to or discontinue any product or service identified in this publication without notice. Dwyer advises its customers to obtain the latest version of the relevant information to verify, before placing any orders, that the information being relied upon is current.

DWYER INSTRUMENTS, LLC
DS-WHT Rev. 2

Documents / Resources

| Dwyer Series WHT Weather-Resistant Humidity Temperature Transmitter [pdf] Instructions
Series WHT, Weather-Resistant Humidity Temperature Transmitter, Humidity Temperature Transmitter, Weather-Resistant Temperature Transmitter, Temperature Transmitter, Transmitter
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