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Dwyer Temperature humidity probe WHT-311

Dwyer WHT-311 is a temperature-humidity probe for HVAC and environmental monitoring applications. It delivers 0 to 10 VDC output with 3% accuracy across -20 to 60°C, featuring IP54-rated ABS housing suitable for…

SKU 3G-CBM-02155

Also listed as: WHT 311 · WHT-311

Brand
Dwyer
Item
Temperature humidity probe WHT-311
Part Number
WHT311
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
WHT311
output
0 to 10 VDC
accuracy
3%
sensor type
thermistance (Dwyer curve A)
enclosure rating
IP54
housing material
ABS
temperature range
-20 to 60°C
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Dwyer Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

Dwyer WHT-311 is a temperature-humidity probe for HVAC and environmental monitoring applications. It delivers 0 to 10 VDC output with 3% accuracy across -20 to 60°C, featuring IP54-rated ABS housing suitable for indoor and light industrial installations.

Frequently Asked Questions

What is the Dwyer WHT-311 temperature humidity probe used for?

The Dwyer WHT-311 is a temperature-humidity probe designed for HVAC and environmental monitoring applications, such as measuring outside air conditions for air handling economizer control. It delivers a 0 to 10 VDC output signal and is housed in an IP54-rated ABS enclosure suitable for indoor and light industrial installations.

What are the specifications of the Dwyer WHT-311?

The Dwyer WHT-311 has a temperature range of -20 to 60°C, humidity range of 0 to 100% RH, and accuracy of ±3% RH from 20 to 80% RH. It outputs 0 to 10 VDC at 5 mA max, uses a thermistor temperature sensor (Dwyer curve A), and has an IP54-rated ABS enclosure. Power requirement is 15 to 35 VDC or 15 to 29 VAC.

Where to buy the Dwyer WHT-311 in Singapore?

3G Electric supplies the Dwyer WHT-311 temperature humidity probe to customers in Singapore. We handle logistics, customs clearance, and delivery to your facility. Contact our team for pricing and lead time on this item. We source and deliver industrial measurement equipment for HVAC and environmental monitoring applications.

How to install the Dwyer WHT-311 temperature humidity probe?

Mount the Dwyer WHT-311 in a location representative of the area being monitored, avoiding direct sunlight and heat sources. Use the removable screw terminal block for electrical connections, supplying 15 to 35 VDC or 15 to 29 VAC. The sintered filter protects the sensor; clean it periodically to maintain accuracy. Refer to the Dwyer manual for full wiring details.

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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