The “H” port senses total pressure and the “L” port senses static pressure. The difference between these signals is the differential, or velocity pressure. For models PAFS-1002 to PAFS-1005, up to four sensing points and lengths of 3-5/32″ to 9-29/32″ (8.02 to 25.26 cm) to accommodate box size diameters of 4″ to 16″ (10.16 to 40.64 cm) are available. For models PAFS-1006 to PAFS -1011, up to 10 sensing points and lengths from 12-1/2″ to 23-29/32″ (31.75 to 60.72 cm) are available to accommodate appropriately sized duct dimensions.

• Zone control in HVAC systems

Specs

Service: Air and compatible gases.

Wetted Materials: ABS/polycarbonate (UL94-5V).

Temperature Limits: Operating: 40 to 120°F (4 to 49°C); Storage: -40 to 140°F (-40 to 60°C).

Process Connection: 1/4″ (6 mm) ID, 3/8″ (10 mm) OD tubing.

Mounting Orientation: Integral flange with gasket.

Weight: 1 oz (28 g).