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Series WHT Weather-Resistant Humidity/Temperature Transmitter
Brand: Dwyer Instruments, LLCThe 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.
Features- RH or RH and Temperature Outputs
- Compact NEMA 3S Construction
1 - 12 of 22 Part Numbers
WHT-21
- Accuracy - 2%
- Output - 4-20 mA
WHT-210
- Accuracy - 2%
- Output - 4-20 mA
- Temperature Output - None
WHT-211
- Accuracy - 2%
- Output - 4-20 mA
- Temperature Output - 4-20 mA
WHT-21A
- Accuracy - 2%
- Output - 4-20 mA
- Temperature Output - 10K O Type III
WHT-22
- Accuracy - 2%
- Output - 0 to 10 Vdc
WHT-220
- Accuracy - 2%
- Output - 0 to 10 Vdc
- Temperature Output - None
WHT-222
- Accuracy - 2%
- Output - 0 to 10 Vdc
- Temperature Output - 0 to 10 Vdc
WHT-22A
- Accuracy - 2%
- Output - 0 to 10 Vdc
- Temperature Output - 10K O Type III
WHT-23
- Accuracy - 2%
- Output - 0 to 5 Vdc
WHT-230
- Accuracy - 2%
- Output - 0 to 5 Vdc
- Temperature Output - None
WHT-233
- Accuracy - 2%
- Output - 0 to 5 Vdc
- Temperature Output - 0 to 5 Vdc
WHT-31
- Accuracy - 3%
- Output - 4-20 mA
1 - 12 of 22 Part Numbers
Specifications
Brand
Accuracy
- ± 0.3° C at 25° C (± 0.9° F at 77° F)
- RH: ± 3 % at 20 to 80 %
- RH: ± 4 % at 10-20 %, 80-90 %
- Thermistor: ± 0.2° C at 25° C (± 0.36° F at 77° F)
Approvals & Certifications
- CE
Compensated Temperature
- -20° to 60° C (-4° to 140° F) - RH
Electrical Connectors
- Removable Screw Terminal Block
Enclosure, Body Material
- Polyamide
Environmental Protection
- IP54
- NEMA 3S
Humidity
- 0 to 100 % RH
Hysteresis
- RH: ± 1 %
Output
- 0-10 V at 5 mA
- 0-5 V at 5 mA
- 4-20 mA
Power Requirement
- 10 to 29 Vac - (0 to 5 V Output Models)
- 10 to 35 Vdc - (0 to 5 V Output Models, 4-20 mA Loop-Powered Models)
- 15 to 29 Vac (0-10 V Output Models)
- 15 to 35 Vdc - (0-10 V Output Models)
Repeatability
- RH: ± 0.1 % Typical
Response Time
- 15 seconds
Sensor / Probe Material
- Capacitance Polymer
Sensor / Probe Type
- RH
- Thermistor - 10 kΩ (Typical III)
Storage Temperature
- -40° to 80° C (-40° to 176° F)
Temperature Range
- -40° to 60° C (-40° to 140° F)
- Air Handling Economizers
- Air Environment Monitoring in Agriculture or Livestock Cultivation Houses