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Dwyer Temperature humidity probe WHT-322

The Dwyer WHT-322 is a temperature-humidity probe delivering 0 to 10 VDC output for HVAC and environmental monitoring applications. It features 3% humidity accuracy and operates across -20 to 60°C with NEMA 3S (IP54)…

SKU 3G-CBM-02157

Also listed as: WHT 322 · WHT-322

Brand
Dwyer
Item
Temperature humidity probe WHT-322
Part Number
WHT322
Category
Measurement
UNSPSC
41112412 — Pressure gauge
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

Dwyer
Manufacturer Part Number
WHT322
sensor type
10K Thermistor (Dwyer Curve A)
output signal
0 to 10 VDC
enclosure rating
NEMA 3S (IP54)
housing material
ABS
humidity accuracy
3%
temperature range
-4 to 140°F (-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-322 is a temperature-humidity probe delivering 0 to 10 VDC output for HVAC and environmental monitoring applications. It features 3% humidity accuracy and operates across -20 to 60°C with NEMA 3S (IP54) protection, fitting industrial control and building management systems.

Frequently Asked Questions

What is the Dwyer WHT-322 temperature humidity probe used for?

The Dwyer WHT-322 is used for measuring outside air temperature and humidity in HVAC economizer applications and building management systems. It is designed to withstand outdoor elements with a NEMA 3S (IP54) enclosure, making it suitable for environmental monitoring in industrial control and air handling systems.

What are the specifications of the Dwyer WHT-322?

The Dwyer WHT-322 outputs 0 to 10 VDC for both temperature and humidity. It has a humidity accuracy of ±3% from 20 to 80% RH, operates from -20 to 60°C, and uses a 10K thermistor (Dwyer Curve A) for temperature sensing. Power requirement is 10 to 35 VDC, and the enclosure is rated NEMA 3S (IP54).

Where to buy the Dwyer WHT-322 in Singapore?

You can source the Dwyer WHT-322 temperature humidity probe through 3G Electric in Singapore. We handle logistics, customs clearance, and delivery to your facility. Contact our team for pricing and lead time on this Dwyer model for your HVAC or environmental monitoring project.

How to install the Dwyer WHT-322 temperature humidity probe?

Mount the Dwyer WHT-322 in a location representative of the area being monitored, avoiding direct sunlight or heat sources. Connect the 0 to 10 VDC output to your control system using the removable screw terminal block. Ensure power supply is 10 to 35 VDC and the sintered filter remains clean for accurate readings.

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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