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Dwyer Humidity Transmitters: 4 to 20mA, Pt1000 RTD, Screw Terminals, 1/2 in NPS - Outdoor Surface-Mount Temperature & Humidity Transmitters
DwyerOutdoor Surface-Mount Temperature & Humidity Transmitters

Dwyer Humidity Transmitters: 4 to 20mA, Pt1000 RTD, Screw Terminals, 1/2 in NPS

The Dwyer RHP-3O1E is an outdoor surface-mount temperature and humidity transmitter with a 4 to 20mA output. It uses a Pt1000 RTD sensing element and operates on a 10 to 35V DC power source. The device offers…

SKU 3G-OTH-179166

Brand
Dwyer
Item
Humidity Transmitters: 4 to 20mA, Pt1000 RTD, Screw Terminals, 1/2 in NPS
Category
Outdoor Surface-Mount Temperature & Humidity Transmitters
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Technical Specifications

Dwyer
Manufacturer Part Number
RHP-3O1E
Type
Pt1000 RTD, Screw Terminals, RHP
NPS
1/2 in
Output
4 to 20mA
Probe Lg
3 in
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
Pt1000 RTD
Temperature Accuracy
±0.54°F @ 32°F
View Full Spec Sheet

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

Product Description

The Dwyer RHP-3O1E is an outdoor surface-mount temperature and humidity transmitter with a 4 to 20mA output. It uses a Pt1000 RTD sensing element and operates on a 10 to 35V DC power source. The device offers humidity accuracy of ±3% 20 to 80% RH at 25°C and temperature accuracy of ±0.54°F @ 32°F over a -4 °F to 140 °F range.

Frequently Asked Questions

What is the Dwyer RHP-3O1E humidity transmitter used for?

The Dwyer RHP-3O1E is an outdoor surface-mount transmitter that measures both humidity and temperature. It is used in HVAC, building automation, and environmental monitoring applications where reliable 4 to 20mA output and Pt1000 RTD sensing are required for control systems.

What are the specifications of the Dwyer RHP-3O1E?

The Dwyer RHP-3O1E has a 4 to 20mA output, Pt1000 RTD sensing element, and operates on 10 to 35V DC. Humidity accuracy is ±3% from 20 to 80% RH at 25°C, temperature accuracy is ±0.54°F at 32°F, and the temperature range is -4°F to 140°F. Probe length is 3 in with 1/2 in NPS connection.

Where to buy the Dwyer RHP-3O1E worldwide?

3G Electric supplies the Dwyer RHP-3O1E humidity transmitter 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 Dwyer model.

How to install the Dwyer RHP-3O1E outdoor transmitter?

Mount the Dwyer RHP-3O1E on a flat outdoor surface using the 1/2 in NPS fitting. Connect 10 to 35V DC power and wire the 4 to 20mA output to your controller via the screw terminals. Avoid direct sunlight and ensure the probe is exposed to ambient air for accurate readings.

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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