FLocorp CalFlo™ CFNF1 AC Thermal Mass Air Flow Switch - Flow Meter Indonesia - Flow meter air, flowmeter solar, gas, Ultrasonic, Vortex, Electromagnetic


Kamis, 17 Februari 2022

FLocorp CalFlo™ CFNF1 AC Thermal Mass Air Flow Switch


FLocorp CalFlo™ CFNF1 AC Thermal Mass Air Flow Switch features solid-state switching and is extremely reliable even under the harshest environmental conditions. The CFNF1 features a repeatable alarm, an adjustable set-point from 3 to 32 feet per second, and LED indication of flow.

The short housing is intended for use in pipe sizes ½” to 1 ½” in diameter and the long housing is recommended for pipe sizes 2” and up. Typical applications include air conditioning, ventilation, air filter monitoring, extraction fans, blowers, damper regulators and energy conservation systems.

FLocorp CalFlo™ CFNF1 AC Features and Benefits

  • Compact air flow switch with rugged Stainless Steel or plastic Ultradur construction
  • High accuracy with NO moving parts
  • Available in 110 VAC or 220 VAC power supply
  • Set-point adjustable between 3 fps and 32 fps
  • Temperature independent
  • Easy installation with mounting flange (included)

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ServiceCompatible Gasses
Switching Range3 to 32 fps (1 to 10 mps)
Factory set-point10 fps (3 mps)

CFNF1-_-U: 15 psi (1 bar)

CFNF1-_-S: 150 psi (10 bar)

Hysteresis≤ 30%
 Switching Delay

Min. 3 s/ Max. 100 s (depends on set-point


Temperature Drift< 0.5% / K
 Supply Voltage

CFNF1-1: 110 VAC

CFNF1-2: 220 VAC

Voltage Tolerance± 10%
Switching Current200 mA max.
Repeatability< 3%
ConsumptionApprox. 1W
Starting Override Time Max. 90 s



Thyristor Normally Open (closed with flow), Thyristor Normally Closed (open with flow)
DisplayLED for ON or OFF state
Process TemperatureF: -4º to 160º C: -20º to 70º
Ambient TemperatureF: -4º to 160º C: -20º to 70º
Enclosure RatingNEMA 4 (IP64)
Housing MaterialUltradur (PBTP) or Stainless Steel
Sensor MaterialCeramic with Over Glaze

CFNF1-_-U: 0.3 lbs (130 g)

CFNF1-_-S: 0.4 lbs (200 g) without nut

Cable Jacket Material Oilflex
Cable Length6.5’ (2m)

Download Datasheet: CalFlo™ CFNF1 AC Thermal Mass Air Flow Switch

Ref: Flo-corp.com