Is the Dwyer Sealed temperature sensor O-4A available from 3G Electric?

Yes — 3G Electric supplies genuine Dwyer products with in-stock availability on common SKUs and worldwide shipping.

How do I get a quote for the Dwyer Sealed temperature sensor O-4A?

Click "Request a Quote" on this page or add the product to your RFQ cart. Our engineers will respond within 24 hours with pricing, lead times, and technical recommendations.

Does 3G Electric provide technical support for measurement?

Yes, our team of experienced engineers provides full technical support including product selection, installation guidance, commissioning, and after-sales service for all measurement we distribute.

Image not available

DwyerMeasurement

Dwyer Sealed temperature sensor O-4A

SKU 3G-CBM-02319

Also listed as: DWY 52002 · DWY-52002

Brand

Dwyer

Item

Sealed temperature sensor O-4A

Technical Specifications

Dwyer

type

Sealed temperature sensor 

accuracy

DIN class B ±0.3°C @ 0°C (for RTD models) 

mounting

Suspension or surface 

sensor type

10kΩ Type III Thermistor 

probe material

304 stainless steel 

protection class

IP66 

probe diameter mm

5.97 

probe length inches

3.5

operating temperature

-40 to +125°C 

View Full Spec Sheet

Technical Documents

(1)

Technical Document 1

PDF Document

Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.

Talk to an engineer

Ask a question

Dwyer Products

3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Dwyer O-4A is a sealed temperature sensor featuring a 10kΩ Type III Thermistor with 304 stainless steel construction and IP66 protection for industrial process monitoring. Operating range spans -40 to +125°C with a 5.97 mm probe diameter and 3.5 inch length, suitable for suspension or surface mounting applications.

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.

Browse all Dwyer products →Contact our engineers →