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

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

The Dwyer RHPX-3SDA0-00 is a duct-mount temperature and humidity transmitter with a 4 to 20mA DC output. It features a thermistor sensing element (20K @ 25°C) and operates on a 10 to 35V DC power source. The device…

SKU 3G-OTH-180788

Brand
Dwyer
Item
Humidity/Temp Transducer: 4 to 20mA DC, Thermistor
Category
Duct-Mount Temperature & Humidity Transmitters
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Technical Specifications

Dwyer
Manufacturer Part Number
RHPX-3SDA0-00
Type
Thermistor (20K @ 25°C), Screw Terminals
NPS
1/2 in
Output
4 to 20mA DC
Power Source
10 to 35V DC
Humidity Accuracy
2%
Temperature Range
-4 °F to 140 °F
Sensing Element Type
Thermistor (20K @ 25°C)
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 RHPX-3SDA0-00 is a duct-mount temperature and humidity transmitter with a 4 to 20mA DC output. It features a thermistor sensing element (20K @ 25°C) and operates on a 10 to 35V DC power source. The device offers a humidity accuracy of 2% and a temperature accuracy of ±0.36°F @ 77°F, with a temperature range of -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 RHPX-3SDA0-00 used for?

The Dwyer RHPX-3SDA0-00 is a duct-mount transmitter that measures both humidity and temperature in HVAC air-handling systems. It outputs a 4 to 20mA DC signal for integration with building automation controls, ensuring precise environmental monitoring in commercial or industrial ventilation ducts.

What are the specifications of the Dwyer RHPX-3SDA0-00?

The Dwyer RHPX-3SDA0-00 has a humidity accuracy of 2% and temperature accuracy of ±0.36°F @ 77°F. It uses a thermistor sensing element (20K @ 25°C), operates on 10 to 35V DC, and covers a temperature range of -4 °F to 140 °F. Output is 4 to 20mA DC via screw terminals with a 1/2 in NPS connection.

Where to buy the Dwyer RHPX-3SDA0-00 worldwide?

3G Electric supplies the Dwyer RHPX-3SDA0-00 to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this duct-mount humidity/temperature transmitter.

How to install the Dwyer RHPX-3SDA0-00?

Mount the Dwyer RHPX-3SDA0-00 in a duct using the 1/2 in NPS fitting, ensuring the sensing element is exposed to airflow. Wire the 4 to 20mA DC output to your controller via the screw terminals, and connect a 10 to 35V DC power source. Follow Dwyer's manual for proper orientation and calibration.

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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