Description
Flocorp CalFlo™ CFNF2 DC features solid-state switching and is extremely reliable even under the harshest environmental conditions. NitroFlo features a repeatable alarm, an adjustable set-point from 3 to 32 feet per second, and an 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™ CFNF2 DC Features and Benefits
- Compact flow switch with rugged Stainless Steel or plastic Ultradur construction
- High accuracy with NO moving parts
- 24 VDC power supply
- Set-point adjustable between 3 fps and 32 fps
- Temperature independent
- Easy installation with mounting flange (included)
Specifications
| Service | Compatible Gasses |
| Switching Range | 3 to 32 fps (1 to 10 mps) |
| Factory set-point | 10 fps (3 mps) |
| Pressure | CFNF2-U: 15 psi (1 bar) |
| CFNF2-S: 150 psi (10 bar) | |
| Hysteresis | ≤ 30% |
| Switching Delay | Min. 3 s/ Max. 100 s (depends on set- point adjustment) |
| Temperature Drift | < 0.5% / K |
| Supply Voltage | 24 VDC ±10% |
| Residual Ripple | 20% |
| Switching Current | 500 mA max. |
| Repeatability | < 3% |
| Consumption | Approx. 1W |
| Starting Override Time | Max. 90 s |
| Output | PNP Normally Open (closed with flow) PNP Normally Closed (open with flow) NPN Normally Open (closed with flow) NPN Normally Closed (open with flow) |
| Display | LED for ON or OFF state |
| Process Temp. | F: -4º to 160º C: -20º to 70º |
| Ambient Temp. | F: -4º to 160º C: -20º to 70º |
| Enclosure Rating | NEMA 4 (IP64) |
| Housing Material | Ultradur (PBTP) or Stainless Steel |
| Sensor Material | Ceramic with Over Glaze |
| Weight | CFNF2-U: 0.3 lbs (130 g) |
| CFNF2-S: 0.4 lbs (200 g) without nut | |
| Cable | |
| Cable Jacket Material | Oilflex |
| Cable Length | 6.5’ (2m) |
Download Datasheet: CalFlo™ CFNF2 DC Thermal Mass Air Flow Switch
Ref: Flo-corp.com
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