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3G Electric
Dwyer Temperature sensor sealed O-4D - Measurement
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

Brand
Dwyer
Item
Temperature sensor sealed O-4D
Category
Measurement
UNSPSC
41112412 — Pressure gauge
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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

Technical Documents

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Dwyer Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

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 construction rated -40 to +125°C. Ideal for surface or suspended mounting.

Frequently Asked Questions

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

The 3G-CBM-02322 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
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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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