Series PAFS-1000 Averaging Flow Sensor

Ideal for Sensing Fan Flow Rates

The Series PAFS-1000 Averaging Flow Sensor is ideal for sensing differential pressure in the inlet section of variable air volume terminal units and fan terminal units. Units can also be used to sense differential pressure at other locations in the main or branch duct systems.

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.

Product Applications

  • Zone control in HVAC systems

Models & Ordering

Model Description Usually Ships Price Order
PAFS-1002
Ships: Same Day
Price: $7.25
Averaging flow sensor, 3-5/32" (8.02 cm) insertion length. Same Day $7.25 Order
PAFS-1003
Ships: Same Day
Price: $8.50
Averaging flow sensor, 5-13/32" (13.73 cm) insertion length. Same Day $8.50 Order
PAFS-1004
Ships: Same Day
Price: $10.50
Averaging flow sensor, 7-21/32" (19.55 cm) insertion length. Same Day $10.50 Order
PAFS-1005
Ships: Same Day
Price: $13.50
Averaging flow sensor, 9-29/32" (25.26 cm) insertion length. Same Day $13.50 Order
PAFS-1006
Ships: 1-2 Weeks
Price: $29.00
Averaging flow sensor, 12-1/2" (31.75 cm) insertion length. 1-2 Weeks $29.00 Order
PAFS-1007
Ships: 1-2 Weeks
Price: $34.00
Averaging flow sensor, 14-3/4" (37.47 cm) insertion length. 1-2 Weeks $34.00 Order
PAFS-1008
Ships: 1-2 Weeks
Price: $34.00
Averaging flow sensor, 17-1/8" (43.50 cm) insertion length. 1-2 Weeks $34.00 Order
PAFS-1009
Ships: 1-2 Weeks
Price: $43.00
Averaging flow sensor, 19-13/32" (49.29 cm) insertion length. 1-2 Weeks $43.00 Order
PAFS-1010
Ships: 1-2 Weeks
Price: $47.00
Averaging flow sensor, 21-21/32" (55.01 cm) insertion length. 1-2 Weeks $47.00 Order
PAFS-1011
Ships: 1-2 Weeks
Price: $52.00
Averaging flow sensor, 23-29/32" (60.72 cm) insertion length. 1-2 Weeks $52.00 Order

Specifications

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).
Agency Approvals:
Meets the technical requirements of EU Directive 2011/65/EU (RoHS II).

Product Literature

Manuals

Catalog Pages

Approvals

Drawings

Questions

Question
My quesiton is regarding PAFS-1000 series averaging flow sensor. Is the K factor provided in the instruction manual a direct multiplier to the velocity measured? i.e. v_actual = v_measured * K.
Answer
You are correct. V_actual = V_measured * K.

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