DwyerMeasurement

Dwyer Waterproof temperature sensor O-4E

Dwyer O-4E is a waterproof RTD temperature sensor with IP66 rating for industrial process monitoring and control. Features DIN class B accuracy of ±0.3°C at 0°C and 3.5 inch 304 stainless steel probe. Suits suspended…

SKU 3G-CBM-02323

Also listed as: DWY 52010 · DWY-52010

Brand

Dwyer

Item

Waterproof temperature sensor O-4E

Local availability & support — Singapore

Local office: 20 Woodlands Link #09-05, Singapore 738733
Phone: +65 8878 8355
Delivery: Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment: Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to: Singapore

Technical Specifications

Dwyer

accuracy

DIN class B: ±0.3°C @ 0°C 

mounting

suspended or surface 

ip rating

IP66 

sensor type

RTD temperature sensor 

probe length

3.5 inches 

probe material

304 stainless steel 

probe diameter mm

5.97 

operating temperature

-40 to +125°C 

Datasheet Content

Série
     O-4             Capteurs de température étanche
                     IP66, Bloc de Jonction Amovible
                                                                                                   2X     2X .250
                                                                                                  .375               2X Ø.188


                                                                                                                              3-31/64
                                                                                                                               [88.5]
                                                                                                                           3
                                                                                                                         [76.2]      4
                                                                                               6-3/8                              [101.6]
                                                                                             [161.48]                                                         1-27/64
                                                                                                                                                              [36.12] 1-31/64
                                                                                                                                                                      [37.70]

                                                                                                               2x 5/16
                                                                                                                [7.94]
                                                                                                            2-3/4
                                                                                                           [69.85]


La Série O-4 Capteurs de Température de l’Air Extérieur est excellent pour la                       SPÉCIFICATIONS
surveillance des températures de l’air ambiante dans le cas d’applications en espace extérieur.     Précision : Capteur de température de thermistance : ±0.22°C @ 25°C ;
Les capteurs de température sont montés dans un boîtier IP66 avec des ergots de montage             RTD capteur de température : DIN classe B : ±0.3°C @ 0°C.
intégraux. Ces ergots peuvent être utilisés pour le montage en surface ou en suspension des         Température de fonctionnement : -40 à +125°C.
capteurs de température. Le bloc de jonction amovible rend l’installation plus aisée. La Série      Diamètre de la Sonde : 5.97 mm.
O-4 peut être utilisée pour mesurer les températures de l’air extérieur dans les systèmes           Longueur de la Sonde : 3.5”.
d’automation de bâtiments ou de températures de chambres au sein de demeures agricoles              Matériau de la Sonde : inox 304.
ventilées.                                                                                          Montage : En suspension ou en surface.
                                                                                                    Caractéristiques du Boîtier : IP66.
 Modèle           Type de Capteur                                                 Réf.              Poids : 85 g.
 O-4A             10KΩ Type III Thermistance                                    DWY52002
 O-4B             10KΩ Type II Thermistance                                     DWY52004
 O-4C             3KΩ Thermistance                                              DWY52006
 O-4D             Pt100Ω RTD                                                    DWY52008
 O-4E             Pt1000Ω RTD                                                   3G-CBM-02323
 O-4F             20KΩ Thermistance                                             DWY52012

Technical Documents

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Technical Document 1

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Dwyer Products

3G Electric (S) Pte. Ltd. — Singapore

Product Description

Frequently Asked Questions

What is the Dwyer O-4E waterproof temperature sensor used for?

The Dwyer O-4E is a Pt1000 RTD temperature sensor used for monitoring outdoor air, ambient air, and process temperatures in building automation, agricultural, and industrial HVAC systems. Its IP66-rated housing and 304 stainless steel probe suit harsh environments where moisture or dust is present.

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

The Dwyer O-4E is a Pt1000 RTD sensor with DIN class B accuracy of ±0.3°C at 0°C. It has a 3.5-inch 304 stainless steel probe (5.97 mm diameter), IP66 enclosure, and operates from -40 to +125°C. Mounting options are suspended or surface mount.

Where to buy the Dwyer O-4E in Singapore?

3G Electric supplies the Dwyer O-4E Pt1000 RTD temperature sensor to Singapore. We handle sourcing, logistics, customs clearance, and delivery to your facility. Contact our team for pricing and lead time on this model (SKU 3G-CBM-02323).

How to install the Dwyer O-4E temperature sensor?

The Dwyer O-4E features a removable terminal block for easier wiring. Use the integral mounting tabs for suspended or surface mounting. Ensure the IP66 cover is properly sealed after installation to maintain the weatherproof rating. Follow standard RTD wiring practices for the Pt1000 element.

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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