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Dwyer Average flow probe AFG-2 - Measurement
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Dwyer Average flow probe AFG-2

Dwyer AFG-2 is an average flow probe for HVAC and ductwork applications, measuring air velocity from 1.5 to 30 m/sec with ±5% accuracy. It connects via 5/16" threads and accommodates 8 mm or 16 mm tube diameters…

SKU 3G-CBM-02151

Also listed as: AFG 2 · AFG-2

Brand
Dwyer
Item
Average flow probe AFG-2
Part Number
AFG2
Category
Measurement
UNSPSC
41112412 — Pressure gauge
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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
Manufacturer Part Number
AFG2
accuracy
±5%
connection
5/16" threaded
tube diameters
8 mm or 16 mm
velocity range
1.5 to 30 m/sec
max temperature
80°C
max duct diagonal
153.4 cm
max duct diameter
150.9 cm

Technical Documents

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

Product Description

Dwyer AFG-2 is an average flow probe for HVAC and ductwork applications, measuring air velocity from 1.5 to 30 m/sec with ±5% accuracy. It connects via 5/16" threads and accommodates 8 mm or 16 mm tube diameters, operating to 80°C in ducts up to 150.9 cm diameter.

Frequently Asked Questions

What is the Dwyer AFG-2 average flow probe used for?

The Dwyer AFG-2 average flow probe is used for HVAC and ductwork applications to measure air velocity from 1.5 to 30 m/sec with ±5% accuracy. It provides a differential pressure signal for determining air speed and volume flow in rectangular or circular ducts up to 150.9 cm diameter.

What are the specifications of the Dwyer AFG-2?

The Dwyer AFG-2 has a velocity range of 1.5 to 30 m/sec, accuracy of ±5%, maximum temperature of 80°C, and a 5/16" threaded connection. It accommodates 8 mm or 16 mm tube diameters and fits ducts up to 150.9 cm diameter or 153.4 cm diagonal. Weight is 1361 g.

Where to buy the Dwyer AFG-2 in Singapore?

You can source the Dwyer AFG-2 average flow probe through 3G Electric in Singapore. We handle logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this HVAC measurement instrument.

How to install the Dwyer AFG-2 average flow probe?

Install the Dwyer AFG-2 by mounting the two tubes diagonally across a rectangular duct or diametrically across a round duct. The probe comes as a kit for workshop or on-site assembly. Connect the 5/16" threaded ports to a manometer or pressure transducer for differential pressure readings.

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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