Dwyer Series WHT Weather-Resistant Humidity/Temperature Transmitter

Product Description

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.

Models

Specifications

Relative Humidity Range:

0 to 100% RH.

Temperature Range:

-40 to 140°F (-40 to 60°C).

Accuracy, RH:

±3% 20-80% RH, ±4% @ 10-20%, 80-90%.

Accuracy, 4-20 mA Temp. Output Models:

±0.9°F @ 72°F (±0.3°C @ 25°C).

Accuracy, Passive Thermistor Temp. Sensor Models:

±0.4°F @ 77°F (±0.22°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).

4-20 mA Loop Powered Models:

Power Requirements: 10-35 VDC; Output Signal: 4-20 mA.

0-10 V Output Models:

Power Requirements: 15-35 VDC or 15 –29 VAC; Output Signal: 0-10 V @ 5 mA max.

0-5 V Output Models:

Power Requirements: 10-35 VDC or 10–29 VAC; Output Signal: 0-5 V @ 5 mA max.

Response Time:

15 seconds.

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).

Agency Approvals:

CE.

Literature

Manuals

WHT

Catalog Pages

Series WHT Catalog Page

Drawings

• dwg
• pdf
• 3D Drawing

Model Chart

FAQ

Question

How many wires do the RTD versions of the TE Series Temperature Sensors have?

Answer

The TE Series Temperature Sensors are all two-wire sensors for both the thermistors and RTD’s.

Related

Series TE

Series TE-A

Series TE-OND/TE-RND/TE-OSA

Series WHT

Series TE-W & TE-WSS

Question

I’m looking for a dual temp. and humidity gauge for an 8″ duct. I’m wanting to remote read the temp and humidity on the incoming and outgoing air to an ERV unit. The RHP-3M11-LCD was recommended to me, however, it is a direct read. What would be the correct instrument to remote read the temperature and humidity from a distance of 8 feet. The 8″ duct is in the attic and I want to read the result in the down-stair hall. I don’t want to record nor program the unit, just read the performance.

Answer

The sensor recommended would be the best option we have for sensing temperature and relative humidity for your application. We do not have any options with a remote display that could stretch as far as you are asking, nor are there any on the market to my knowledge. In every case, you would need to utilize a process output, in this case 4-20 mA, to transmit the readings to a remote display(s) which would accept the process signal(s). If you are just looking for a remote readout to go with the RHP sensor with no control functionality, then you could look at one of our panel meters, possibly the SPPM, DPMA, DPMW, or DPMP & DPML series panel meters. For assistance selecting an appropriate panel meter, please contact our technical support group at 219-879-8000.

Related

Series RH-R

Series WHT

Series RHP

Model 657-1

Series RHP-E/N

Series HHT

Model 657C-1