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Dwyer RHP-3D1B Duct-Mount Temperature & Humidity Transmitter, 4-20mA Output - Duct-Mount Temperature & Humidity Transmitters
DwyerDuct-Mount Temperature & Humidity Transmitters

Dwyer RHP-3D1B Duct-Mount Temperature & Humidity Transmitter, 4-20mA Output

The Dwyer RHP-3D1B is a duct-mount temperature and humidity transmitter with a 4 to 20mA DC output. It features a Type II Thermistor (10K @ 25°C) sensing element, humidity accuracy of 3%, and temperature accuracy of…

SKU 3G-OTH-180775

Also listed as: RHP3D1B · RHP 3D1B

Brand
Dwyer
Item
RHP-3D1B Duct-Mount Temperature & Humidity Transmitter, 4-20mA Output
Part Number
RHP-3D1B
Category
Duct-Mount Temperature & Humidity Transmitters
Available to Order
Also known as:RHP-3D1BDwyer
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Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

Dwyer
Manufacturer Part Number
RHP-3D1B
Type
Type II Thermistor (10K @ 25°C), Screw Terminals, RHP
Output
4 to 20mA DC
Power Source
10 to 35V DC
Humidity Accuracy
3%
Temperature Range
-4 °F to 140 °F
Sensing Element Type
Type II Thermistor (10K @ 25°C)
Temperature Accuracy
±0.36°F @ 77°F

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

Product Description

The Dwyer RHP-3D1B is a duct-mount temperature and humidity transmitter with a 4 to 20mA DC output. It features a Type II Thermistor (10K @ 25°C) sensing element, humidity accuracy of 3%, and temperature accuracy of ±0.36°F @ 77°F. The device operates on a 10 to 35V DC power source and measures temperatures from -4 °F to 140 °F.

Frequently Asked Questions

What is the Dwyer RHP-3D1B humidity/temp transducer used for?

The Dwyer RHP-3D1B is a duct-mount transmitter used in HVAC systems to monitor and control temperature and humidity in air handling ducts. It provides a 4 to 20mA DC output for integration with building automation systems, ensuring precise environmental regulation in commercial and industrial facilities.

What are the specifications of the Dwyer RHP-3D1B?

The Dwyer RHP-3D1B features a Type II Thermistor (10K @ 25°C) sensing element, humidity accuracy of 3%, and temperature accuracy of ±0.36°F @ 77°F. It operates on 10 to 35V DC power, measures temperatures from -4 °F to 140 °F, and outputs 4 to 20mA DC via screw terminals.

Where to buy the Dwyer RHP-3D1B worldwide?

You can source the Dwyer RHP-3D1B through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we provide competitive pricing and reliable sourcing for this Dwyer transducer.

How to install the Dwyer RHP-3D1B duct-mount transmitter?

Mount the Dwyer RHP-3D1B in a duct using the provided flange, ensuring the sensing element is exposed to airflow. Connect 10 to 35V DC power and wire the 4 to 20mA output to your controller via screw terminals. Follow Dwyer's manual for proper orientation and avoid condensation on the sensor.

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 duct-mount temperature & humidity transmitters. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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