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Dwyer Humidity Sensor: 4 to 20 mA, Screw Terminals, -4°F to 140°F - Indoor Wall-Mount Transmitters
DwyerIndoor Wall-Mount Transmitters

Dwyer Humidity Sensor: 4 to 20 mA, Screw Terminals, -4°F to 140°F

The Dwyer RHP-3E40 is an indoor wall-mount humidity transmitter with a 4 to 20 mA output. It operates over a temperature range of -4 °F to 140 °F and a relative humidity range of 0% to 100%.

SKU 3G-OTH-179230

Brand
Dwyer
Item
Humidity Sensor: 4 to 20 mA, Screw Terminals, -4°F to 140°F
Category
Indoor Wall-Mount Transmitters
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Technical Specifications

Dwyer
Manufacturer Part Number
RHP-3E40
Type
Screw Terminals, -4°F to 140°F
Output
4 to 20 mA
Temperature Range
-4 °F to 140 °F
Relative Humidity Range
0%to 100%
View Full Spec Sheet

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Dwyer Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Dwyer RHP-3E40 is an indoor wall-mount humidity transmitter with a 4 to 20 mA output. It operates over a temperature range of -4 °F to 140 °F and a relative humidity range of 0% to 100%.

Frequently Asked Questions

What is the Dwyer RHP-3E40 humidity sensor used for?

The Dwyer RHP-3E40 is an indoor wall-mount humidity transmitter used for monitoring and controlling relative humidity in HVAC, cleanroom, and process environments. It provides a 4 to 20 mA output signal for integration with building management systems.

What are the specifications of the Dwyer RHP-3E40?

The Dwyer RHP-3E40 has a 4 to 20 mA output, a temperature range of -4 °F to 140 °F, and a relative humidity range of 0% to 100%. It features screw terminals for wiring and is designed for indoor wall-mount installation.

Where to buy the Dwyer RHP-3E40 worldwide?

3G Electric supplies the Dwyer RHP-3E40 humidity sensor to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this Dwyer transmitter.

How to install the Dwyer RHP-3E40 humidity transmitter?

Mount the Dwyer RHP-3E40 on an interior wall away from direct heat or drafts. Connect the 4 to 20 mA output to your controller using the screw terminals. Follow Dwyer's manual for wiring polarity and avoid exceeding the rated temperature range of -4 °F to 140 °F.

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

Dwyer Products

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

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