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Dwyer Temperature humidity probe WHT-330

The Dwyer WHT-330 is a temperature-humidity probe for HVAC and environmental monitoring applications, delivering 3% accuracy with thermistor sensing and 0–10 VDC or 4–20 mA output signals. IP54-rated for indoor and…

SKU 3G-CBM-02158

Also listed as: WHT 330 · WHT-330

Brand
Dwyer
Item
Temperature humidity probe WHT-330
Part Number
WHT330
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
WHT330
accuracy
3%
sensor type
thermistance
output signal
0 to 10 VDC or 4 to 20 mA
protection rating
IP54
temperature range
-20 to 60°C
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Dwyer Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Dwyer WHT-330 is a temperature-humidity probe for HVAC and environmental monitoring applications, delivering 3% accuracy with thermistor sensing and 0–10 VDC or 4–20 mA output signals. IP54-rated for indoor and light outdoor deployment across −20 to 60°C operating range.

Frequently Asked Questions

What is the Dwyer WHT-330 temperature humidity probe used for?

The Dwyer WHT-330 is used for HVAC and environmental monitoring, particularly measuring outside air temperature and humidity for air handling economizer applications. It is suitable for indoor and light outdoor deployment thanks to its IP54-rated enclosure.

What are the specifications of the Dwyer WHT-330?

The Dwyer WHT-330 has a relative humidity range of 0 to 100% RH with ±3% accuracy from 20 to 80% RH. It uses a thermistor temperature sensor and outputs 0 to 5 VDC. Operating temperature range is -40 to 140°F (-40 to 60°C). The enclosure is rated IP54.

Where to buy the Dwyer WHT-330 in Singapore?

You can source the Dwyer WHT-330 from 3G Electric in Singapore. We handle logistics, customs clearance, and delivery to your facility. Contact us for availability and lead time on this temperature humidity probe.

How to install the Dwyer WHT-330 temperature humidity probe?

Mount the Dwyer WHT-330 in a location representative of the area being monitored, avoiding direct sunlight and heat sources. Connect the 0 to 5 VDC output to your control system using the removable screw terminal block. Ensure 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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