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

Delivery: Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment: Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

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

(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

Frequently Asked Questions

Where can I source the Dwyer DWY52008 O-4D temperature sensor worldwide?

3G Electric is an authorised distributor of Dwyer sensors. We source the DWY52008 O-4D and handle worldwide delivery, customs clearance, and logistics. Lead time on request—contact our team for availability.

What is the accuracy and temperature range of this Dwyer sensor?

The DWY52008 features a Pt100Ω RTD with DIN class B accuracy of ±0.3°C at 0°C. Operating range is -40 to +125°C. Housing is IP66 rated with 304 stainless steel construction for durability.

Is the Dwyer O-4D suitable for outdoor building automation applications?

Yes. The sealed O-4D with IP66 housing and stainless steel probe is designed for outdoor air temperature measurement in building automation and agricultural facility monitoring. Mounting options include surface or suspended installation.

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 →