What is the Dwyer sealed temperature sensor O-4F used for?

The Dwyer O-4F is an RTD Pt100Ω temperature sensor designed for industrial process measurement in harsh environments. Its IP66 rating and stainless steel 304 construction make it suitable for food processing, chemical plants, and HVAC systems across Southeast Asia requiring reliable temperature monitoring from -40 to +125°C.

What are the specifications of the Dwyer O-4F temperature sensor?

The Dwyer O-4F features an RTD Pt100Ω element with ±0.3°C accuracy at 0°C, IP66 rating, and stainless steel 304 probe. Probe dimensions are 88.9 mm length and 5.97 mm diameter. Temperature range spans -40 to +125°C. It supports both suspension and surface mounting for flexible installation.

Where can I buy the Dwyer O-4F temperature sensor in Singapore?

3G Electric, an authorised Dwyer distributor since 1990, supplies the O-4F (SKU DWY52012) throughout Singapore and Southeast Asia. We handle full logistics, customs clearance, and delivery. Contact us for lead times and specifications tailored to your process requirements.

How do I select and install the Dwyer O-4F sensor?

Choose suspension or surface mounting based on your process layout. Verify the -40 to +125°C range matches your application. Installation requires a compatible thermowell or direct immersion point. Consult the Dwyer technical manual for wiring and calibration procedures. 3G Electric provides application support for Singapore customers.

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Dwyer Sealed temperature sensor O-4F

Dwyer sealed temperature sensor with RTD Pt100Ω element for process measurement across -40 to +125°C. Delivers ±0.3°C accuracy at 0°C with IP66 rating and stainless steel 304 construction. Supports both suspension…

SKU 3G-CBM-02324

Also listed as: DWY 52012 · DWY-52012

Brand

Dwyer

Item

Sealed temperature sensor O-4F

Technical Specifications

Dwyer

accuracy

±0.3°C @ 0°C 

mounting

Suspension or surface 

ip rating

IP66 

sensor type

RTD Pt100Ω 

probe material

Stainless Steel 304 

probe length mm

88.9 

probe diameter mm

5.97 

temperature range

-40 to +125°C 

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Dwyer Products

3G Electric (S) Pte. Ltd. — Singapore

Product Description

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 measurement. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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