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Dwyer Temperature humidity probe WHT-31A - Measurement
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Dwyer Temperature humidity probe WHT-31A

The Dwyer WHT-31A is a temperature and humidity probe for HVAC and environmental monitoring applications, delivering 3% accuracy with 4 to 20 mA output. Rated NEMA 3S (IP54) and operating from -20 to 60°C, it…

SKU 3G-CBM-02160

Brand
Dwyer
Item
Temperature humidity probe WHT-31A
Part Number
WHT31A
Category
Measurement
UNSPSC
41112412 — Pressure gauge
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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
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Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

Dwyer
Manufacturer Part Number
WHT31A
accuracy
3%
output signal
4 to 20 mA
enclosure rating
NEMA 3S (IP54)
temperature range
-20 to 60°C
power requirements
10 to 35 VDC
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Dwyer Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Dwyer WHT-31A is a temperature and humidity probe for HVAC and environmental monitoring applications, delivering 3% accuracy with 4 to 20 mA output. Rated NEMA 3S (IP54) and operating from -20 to 60°C, it integrates into building automation and industrial control systems.

Frequently Asked Questions

Where can I buy the Dwyer WHT-31A temperature humidity probe?

Source the Dwyer WHT-31A directly from 3G Electric, an authorized distributor. We handle worldwide delivery, customs clearance, and logistics. Lead time and availability on request.

What is the output signal and accuracy of the WHT-31A?

The Dwyer WHT-31A delivers 4 to 20 mA analog output with 3% accuracy across its operating range. It operates from 10 to 35 VDC power supply, suitable for direct integration into HVAC controls and building automation systems.

What temperature and humidity range does the WHT-31A support?

The WHT-31A operates from -20 to 60°C and is rated NEMA 3S (IP54) for outdoor and harsh indoor environments. Ideal for HVAC monitoring, environmental control rooms, and industrial process automation applications.

Used in

Common applications for Dwyer
Combustion air-filter monitoring — Magnehelic Series 2000 on burner air-intake filter banks
Clean-room and pharmaceutical pressurisation — Magnehelic / Capsuhelic differential-pressure gauges
HVAC fan-discharge static pressure — Mark II inclined-vertical manometers on AHU test points
Filter-blockage alarms — Photohelic Series 3000 combined gauge/switch on air-handling units
BMS-integrated pressure monitoring — Digihelic DH3 with 4–20 mA output for building management
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Dwyer Products

3G Electric supplies Dwyer measurement. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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