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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-2SSAF-00 is an outdoor surface-mount temperature and humidity transmitter with a 4 to 20mA output. It features a thermistor sensing element (20K @ 25°C) and operates on a 10 to 35V DC power source. The…

SKU 3G-OTH-179169

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-2SSAF-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
±2% 10 to 90% 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-2SSAF-00 is an outdoor surface-mount temperature and humidity transmitter with a 4 to 20mA output. It features a thermistor sensing element (20K @ 25°C) and operates on a 10 to 35V DC power source. The transmitter offers humidity accuracy of ±2% from 10 to 90% RH at 25°C and temperature accuracy of ±0.36°F at 77°F, with a temperature range of -4 °F to 140 °F.

Frequently Asked Questions

What is the Dwyer RHPX-2SSAF-00 humidity transmitter used for?

The Dwyer RHPX-2SSAF-00 is an outdoor surface-mount transmitter that measures both temperature and humidity. It is used in HVAC, building automation, and environmental monitoring applications where reliable 4 to 20mA output and ±2% RH accuracy are required.

What are the specifications of the Dwyer RHPX-2SSAF-00?

The Dwyer RHPX-2SSAF-00 has a thermistor sensing element (20K @ 25°C), 4 to 20mA output, and operates on 10 to 35V DC. Humidity accuracy is ±2% from 10 to 90% RH at 25°C, temperature accuracy is ±0.36°F @ 77°F, and temperature range is -4 °F to 140 °F.

Where to buy the Dwyer RHPX-2SSAF-00 worldwide?

3G Electric supplies the Dwyer RHPX-2SSAF-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 transmitter.

How to install the Dwyer RHPX-2SSAF-00 outdoor transmitter?

Mount the Dwyer RHPX-2SSAF-00 on a flat outdoor surface using the provided screw terminals. Connect the 4 to 20mA output to your control system and supply 10 to 35V DC power. Ensure the 1/2 in NPS conduit fitting is sealed against moisture. Refer to the Dwyer manual for wiring details.

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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DWYER Humidity Transmitters: 4 to 20mA, Pt1000 RTD, Screw Terminals, 1/2 in NPS, 3 in Probe Lg, RHP (MPN RHP-2O1E). Key specifications — Brand: DWYER; Humidity Accuracy: ±2% 10 to 90% RH at 25°C; Sensing Element Type: Pt1000 RTD; Temperature Accuracy: ±0.54°F @ 32°F; Output: 4 to 20mA; Power Source: 10 to 35V DC; Temperature Range: -4 °F to 140 °F.
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DWYER Humidity Transmitters: 4 to 20mA, Thermistor (20K @ 25°C), Screw Terminals, 1/2 in NPS, RHP (MPN RHPX-3SSAF-00). Key specifications — Brand: DWYER; Humidity Accuracy: ±3% 20 to 80% RH at 25°C; Sensing Element Type: Thermistor (20K @ 25°C); Temperature Accuracy: ±0.36°F @ 77°F; Output: 4 to 20mA; Power Source: 10 to 35V DC; Temperature Range: -4 °F to 140 °F.