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Dwyer Humidity/Temperature Sensor: 4 to 20 mA, 10K Ohm Type III Thermistor, Screw Terminals - Indoor Wall-Mount Transmitters
DwyerIndoor Wall-Mount Transmitters

Dwyer Humidity/Temperature Sensor: 4 to 20 mA, 10K Ohm Type III Thermistor, Screw Terminals

The Dwyer RHP-3N4A is an indoor wall-mount humidity and temperature transmitter with a 4 to 20 mA output. It features a 10K Ohm Type III thermistor sensing element, a temperature range of -4 °F to 140 °F, and a…

SKU 3G-OTH-179238

Brand
Dwyer
Item
Humidity/Temperature Sensor: 4 to 20 mA, 10K Ohm Type III Thermistor, Screw Terminals
Category
Indoor Wall-Mount Transmitters
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Technical Specifications

Dwyer
Manufacturer Part Number
RHP-3N4A
Type
Screw Terminals, RHP-E/N
Output
4 to 20 mA
Temperature Range
-4 °F to 140 °F
Type III Thermistor
10K Ohm
Sensing Element Type
10K Ohm Type III Thermistor
Temperature Accuracy
±0.36°F @ 77°F
View Full Spec Sheet

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

Product Description

The Dwyer RHP-3N4A is an indoor wall-mount humidity and temperature transmitter with a 4 to 20 mA output. It features a 10K Ohm Type III thermistor sensing element, a temperature range of -4 °F to 140 °F, and a temperature accuracy of ±0.36°F @ 77°F.

Frequently Asked Questions

What is the Dwyer RHP-3N4A humidity/temperature sensor used for?

The Dwyer RHP-3N4A is an indoor wall-mount transmitter used for monitoring and controlling humidity and temperature in HVAC systems, clean rooms, and environmental chambers. It provides a 4 to 20 mA output signal for integration with building automation systems.

What are the specifications of the Dwyer RHP-3N4A?

The Dwyer RHP-3N4A features a 10K Ohm Type III thermistor sensing element, a temperature range of -4 °F to 140 °F, and a temperature accuracy of ±0.36°F @ 77°F. It has a 4 to 20 mA output and screw terminals for wiring.

Where to buy the Dwyer RHP-3N4A worldwide?

You can source the Dwyer RHP-3N4A through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations, ensuring the sensor reaches your facility reliably.

How to install the Dwyer RHP-3N4A humidity/temperature sensor?

Mount the Dwyer RHP-3N4A on an indoor wall at a representative location, away from direct sunlight or drafts. Connect the 4 to 20 mA output to your controller using screw terminals. Follow Dwyer's manual for wiring and commissioning to ensure 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

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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