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Dwyer Humidity/Temp Transducer: 4 to 20mA DC, Type II Thermistor (10K @ 25°C) - Duct-Mount Temperature & Humidity Transmitters
DwyerDuct-Mount Temperature & Humidity Transmitters

Dwyer Humidity/Temp Transducer: 4 to 20mA DC, Type II Thermistor (10K @ 25°C)

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
Humidity/Temp Transducer: 4 to 20mA DC, Type II Thermistor
Category
Duct-Mount Temperature & Humidity Transmitters
Available to Order
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Technical specs
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

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

Technical Documents

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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.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

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

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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