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Dwyer Metal average flow rate probe MAFS-18

The Dwyer MAFS-18 is a metal average flow rate probe designed for HVAC air velocity measurement applications. It features a 1/4-20 threaded stud connection and 46 cm probe length, providing reliable airflow data for…

SKU 3G-CBM-02212

Also listed as: MAFS 18 · MAFS-18

Brand
Dwyer
Item
Metal average flow rate probe MAFS-18
Part Number
MAFS18
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
MAFS18
model
MAFS-18
connection
1/4-20 threaded stud
application
HVAC air velocity measurement
probe length cm
46

Technical Documents

(1)
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Dwyer Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Dwyer MAFS-18 is a metal average flow rate probe designed for HVAC air velocity measurement applications. It features a 1/4-20 threaded stud connection and 46 cm probe length, providing reliable airflow data for heating and ventilation system monitoring and control.

Frequently Asked Questions

What is the Dwyer MAFS-18 used for?

The Dwyer MAFS-18 is a metal average flow rate probe used for HVAC air velocity measurement. It provides accurate airflow data for heating and ventilation system monitoring and control. The probe features a 1/4-20 threaded stud connection and a 46 cm probe length, making it suitable for duct installation.

What are the specifications of the Dwyer MAFS-18?

The Dwyer MAFS-18 has a 46 cm probe length and a 1/4-20 threaded stud connection. It is designed for clean air service, with an accuracy of ±2% FS from 400 to 9000 FPM (45.7 m/s). Maximum temperature is 204°C. The K factor is 0.81. Minimum design flow is 2 m/sec; maximum is 61 m/sec.

Where to buy the Dwyer MAFS-18 in Singapore?

You can source the Dwyer MAFS-18 from 3G Electric in Singapore. We supply this metal average flow rate probe and handle logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on availability.

How to install the Dwyer MAFS-18?

The Dwyer MAFS-18 can be installed from outside the duct using its 1/4-20 threaded stud. Ensure at least 5 duct diameters of straight pipe upstream for accurate readings. Connect the dual barbed fittings to 3/16" or 1/4" ID tubing. The probe is lightweight and durable for quick HVAC 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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