DwyerMeasurement

Dwyer Temperature sensor sealed O-4D

Dwyer sealed O-4D temperature sensor measures outdoor air in building automation and agricultural applications. Features Pt100Ω RTD with DIN class B accuracy of ±0.3°C at 0°C, IP66 housing, and 304 stainless steel…

SKU 3G-CBM-02322

Also listed as: DWY 52008 · DWY-52008

Brand

Dwyer

Item

Temperature sensor sealed O-4D

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

mounting

Surface or suspended 

application

Outdoor air temperature in building automation or agricultural facility monitoring 

sensor type

Sealed temperature sensor, O-4D series, Pt100Ω RTD 

rtd accuracy

DIN class B: ±0.3°C @ 0°C 

housing rating

IP66 

probe material

304 stainless steel 

probe diameter mm

5.97 

temperature range

-40 to +125°C 

probe length inches

3.5

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                                                    3G-CBM-02322
 O-4E             Pt1000Ω RTD                                                   DWY52010
 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-4D temperature sensor used for?

The Dwyer O-4D sealed temperature sensor measures outdoor air temperature in building automation systems and agricultural facility monitoring. Its IP66 housing and 304 stainless steel probe make it suitable for surface or suspended mounting in exposed environments.

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

The Dwyer O-4D features a Pt100Ω RTD with DIN class B accuracy of ±0.3°C at 0°C. It has a temperature range of -40 to +125°C, a 5.97 mm diameter 304 stainless steel probe, IP66 housing, and weighs 85 g. It is designed for surface or suspended mounting.

Where to buy the Dwyer O-4D temperature sensor in Singapore?

3G Electric supplies the Dwyer O-4D temperature sensor to Singapore. We handle logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this Pt100Ω RTD sensor for building automation or agricultural applications.

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

The Dwyer O-4D can be surface or suspended mounted using its integral mounting tabs. Its removable terminal block simplifies wiring. For best accuracy, mount the sensor in a shaded, ventilated location representative of the outdoor air temperature, avoiding direct sun or heat sources.

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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