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Dwyer Humidity Transmitters: 4 to 20mA, Thermistor (20K @ 25°C), Screw Terminals - Outdoor Surface-Mount Temperature & Humidity Transmitters
DwyerOutdoor Surface-Mount Temperature & Humidity Transmitters

Dwyer Humidity Transmitters: 4 to 20mA, Thermistor (20K @ 25°C), Screw Terminals

The Dwyer RHPX-3SSAF-00 is an outdoor surface-mount temperature and humidity transmitter with a 4 to 20mA output. It uses a thermistor sensing element (20K @ 25°C) and operates on 10 to 35V DC power. Humidity…

SKU 3G-OTH-179170

Brand
Dwyer
Item
Humidity Transmitters: 4 to 20mA, Thermistor
Category
Outdoor Surface-Mount Temperature & Humidity Transmitters
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Technical Specifications

Dwyer
Manufacturer Part Number
RHPX-3SSAF-00
Type
Thermistor (20K @ 25°C), Screw Terminals, RHP
NPS
1/2 in
Output
4 to 20mA
Power Source
10 to 35V DC
Humidity Accuracy
±3% 20 to 80% RH at 25°C
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-3SSAF-00 is an outdoor surface-mount temperature and humidity transmitter with a 4 to 20mA output. It uses a thermistor sensing element (20K @ 25°C) and operates on 10 to 35V DC power. Humidity accuracy is ±3% from 20 to 80% RH at 25°C, temperature accuracy is ±0.36°F at 77°F, and the temperature range is -4°F to 140°F.

Frequently Asked Questions

What is the Dwyer RHPX-3SSAF-00 humidity transmitter used for?

The Dwyer RHPX-3SSAF-00 is an outdoor surface-mount transmitter that measures both humidity and temperature. It is commonly used in HVAC, building automation, and environmental monitoring applications where reliable 4 to 20mA output and a thermistor sensing element are required.

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

The Dwyer RHPX-3SSAF-00 has a humidity accuracy of ±3% from 20 to 80% RH at 25°C, temperature accuracy of ±0.36°F at 77°F, and operates on 10 to 35V DC power. It features a thermistor sensing element (20K @ 25°C), 4 to 20mA output, and 1/2 in NPS connection.

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

3G Electric supplies the Dwyer RHPX-3SSAF-00 humidity transmitter to customers worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to install the Dwyer RHPX-3SSAF-00 humidity transmitter?

Mount the Dwyer RHPX-3SSAF-00 on a flat outdoor surface using the provided bracket. Connect the 4 to 20mA output and thermistor leads to screw terminals, and supply 10 to 35V DC power. Ensure the sensing element is exposed to ambient air and avoid direct sunlight or moisture ingress.

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 outdoor surface-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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