A-520/523 Series

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A-520/523 Series

Air Pressure Sensors A-520/523 Series

Air Pressure Sensors


The MAMAC Systems A-520/523 Series duct and room static pressure sensors for pressure transmitters and pressure switches are used in dirty filter, duct static and room pressurization applications. The A-520 is designed to pick up static pressure in a duct, plenum, air handler or other HVAC equipment. Use the A-523 to sense pressure in rooms, laboratories, hospital operating theaters, clean rooms or any other application in which the area is under positive or negative pressure. The A-523 is designed to interface with the MAMAC PR-274/275 low pressure sensors to provide a low cost labor saving alternative to expensive field derived solutions.


(Wholesale customers, log in for your special pricing)

QtyModelDescriptionIn StockList PriceInternet Price
A-520-1-A-1 STATIC PRESSURE PROBE 4"In Stock21.1611.85
A-520-2-A-1 STATIC PRESSURE PROBE 8"In Stock21.1611.85
A-523 ROOM PRESSURE PICK-UPIn Stock20.0311.22


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  • Unique dual orifice design to eliminate air flow error (A-520)
  • Gasketed mounting flange, brass connector and mounting holes guarantee quick and easy installation (A-520)
  • Tamper proof design, sensing cavity cannot be blocked with tape or obstruction (A-523)
  • Rugged UL 94-V-O flame retardant ABS plastic material (A-523)

Operating Temperature:

A-520:482℉ (250℃) max.

A-523:32° to 158℉ (0° to 70℃)

Materials Of Construction:6061T-6 Aluminum Alloy with neoprene gasket (A-520)

Enclosure Rating: UL 94-V-0 flame retardant ABS plastic, NEMA 1, (A-523)

Port Connections:1/4″ brass hose barb

Pressure Range:

A-520: 10 psid (69 kPa)

A-523:10 psid (69 kPa)

Probe Lengths:4 in (10.2 cm) and 8 in (20.3 cm)

Approvals: CE, RoHS


A-520:1.5 lb (0.7 Kg)

A-523:0.25 lb (0.1 Kg)

Warranty: 5 year