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Dwyer Metal average flow probe MAFS-28

Dwyer MAFS-28 is a metal average flow probe designed for HVAC systems, featuring a 71 cm probe length for accurate duct airflow measurement in heating and cooling applications.

SKU 3G-CBM-02217

Also listed as: DWY 28026 · DWY-28026

Brand
Dwyer
Item
Metal average flow probe MAFS-28
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
type
Metal average flow probe
model
MAFS-28
application
HVAC
probe length cm
71

Datasheet Content

Série MAFS Sonde métallique de débit moyen Le profil fournit une performance accrue et une perturbation de débit minimale 1/2 [12.70] 1 APPROX. 4X Ø7/32 [25.40] 1/4-20 29/64 [Ø5.54] [11.41] 2 33/64 THREADED 1-11/32 [50.80] [12.95] 33/64 STUD [34.25] [12.95] 1-13/64 1-1/2 2 1-35/64 [38.10] [50.80] [39.37] [30.44] 1-3/64 [26.43] 1/4 21/64 [6.35] [8.46] 49/64 1/4 1-1/2 L [19.43] [6.35] [38.10] La Série MAFS est idéale pour une utilisation avec les Instruments Dwyer, précision de l’air, Longueur Longueur capteur de vitesse, transmetteurs et commutateurs. La Série MAFS utilise des points de mesure Modèle de Sonde Réf. Modèle de Sonde Réf. de la pression statique et totale répartis uniformément pour délivrer une mesure précise des flux (en cm) (en cm) dans la conduite. Le profil de pale fournit une performance accrue avec une perturbation du débit MAFS-04 10 DWY28002 MAFS-24 60 DWY28022 minimal dans l’afflux d’air. La sonde de mesure du débit d’air peut être complètement installée MAFS-06 15 DWY28004 MAFS-26 66 DWY28024 depuis l’extérieur de la conduite ronde, rendant l’installation très rapide. Par sa légèreté et sa construction durable, auxquelles s’ajoute sa facilité d’installation, la sonde de débit MAFS est MAFS-08 20 DWY28006 MAFS-28 71 3G-CBM-02217 parfaitement adaptée aux application dans l’industrie HVAC. MAFS-10 25 DWY28008 MAFS-30 76 DWY28028 MAFS-12 30 DWY28010 MAFS-32 81 DWY28030 SPÉCIFICATIONS MAFS-14 35 DWY28012 MAFS-34 86 DWY28032 Service : Air propre. Matériaux : Aluminium AA6063. MAFS-16 40 DWY28014 MAFS-36 91 DWY28034 Précision : de 400 à 9000 FPM (45.7 m/s); ±2% FS, ±3% FS pour 6” et 48” de longueur MAFS-18 45 DWY28016 MAFS-40 101 DWY28036 des modèles. Facteur K : de 0,81, 0,80 pour 6” et 48” de long, 4” longueur = 0,82. MAFS-20 50 DWY28018 MAFS-48 111 DWY28038 Température Max. : 204°C; Joint : -35 à +110°C. MAFS-22 55 DWY28020 Débit de Conception Minimum : 2 m/sec. Débit de Conception Maximum : 61 m/sec. Raccord : double canelés pour 3/16” ou 1/4” ID de tubage. Critères de Tuyauterie Droite : 5 fois le diamètre ou la longueur du plus grand côté.

Technical Documents

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

Product Description

Dwyer MAFS-28 is a metal average flow probe designed for HVAC systems, featuring a 71 cm probe length for accurate duct airflow measurement in heating and cooling applications.

Frequently Asked Questions

What is the Dwyer MAFS-28 metal average flow probe used for?

The Dwyer MAFS-28 is a metal average flow probe designed for HVAC systems. It measures duct airflow accurately in heating and cooling applications by using evenly spaced static and total pressure sensing points. The probe can be installed from outside the duct, making it ideal for clean air service in commercial and industrial ventilation.

What are the specifications of the Dwyer MAFS-28?

The Dwyer MAFS-28 has a 71 cm probe length and is made of aluminium AA6063. It is rated for clean air service with a maximum temperature of 204 °C. Accuracy is ±2% FS from 400 to 9000 FPM (45.7 m/s). Minimum design flow is 2 m/s and maximum is 61 m/s. Connections are dual barbed for 3/16" or 1/4" ID tubing.

Where to buy the Dwyer MAFS-28 in Singapore?

3G Electric supplies the Dwyer MAFS-28 metal average flow probe to Singapore. We handle logistics, customs clearance, and local delivery for HVAC contractors and plant engineers. Contact our team for pricing and lead time on this model. We source genuine Dwyer instruments and provide technical support for your application.

How to install the Dwyer MAFS-28 flow probe?

The Dwyer MAFS-28 can be fully installed from outside the duct, simplifying setup. Ensure at least 5 duct diameters of straight run upstream for accurate readings. Mount the probe perpendicular to airflow and connect the dual barbed fittings to 3/16" or 1/4" ID tubing. Use Dwyer instruments for velocity sensing and transmitters.

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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