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Keyence FD-R50 Flow Sensor, Sensor 40A/50A Type, Clamp-on Meter
The Keyence FD-R50 is a flow monitoring component. Keyence catalogs the FD-R50 as a main unit. Flow sensing confirms that coolant, water, or air is actually moving, which pressure alone cannot verify. Clamp-on and inline styles cover both retrofit monitoring and new pipework. It is used on coolant circuits, cooling water lines, and compressed air systems. Check fittings and straight-pipe requirements for accurate readings.
Specifications
| Product Code | FD-R50 |
| Brand | Keyence |
| Product Category | Automation and Controls Sensors Flow Sensors |
| Supply Voltage | 20 to 30 VDC including 10% ripple (P-P), Class 2 / 100 to 240 VAC - 15% or + 10% (50 / 60 Hz) |
| Current Consumption | When using a DC power supply: 200 mA or less (load current excluded), 400 mA or less (load current included) When using an AC power supply: 15 VA or less |
| Response Time | 0.5 s / 1.0 s / 2.5 s / 5.0 s / 10.0 s / 30.0 s / 60.0 s / 120.0 s / 200.0 s (variable) |
| Display Resolution | 0.1 / 1 (L / min) |
| Measurement Accuracy | Between 20 and 100% of F.S. : ±2.0% of RD *4 *5 Between 6 and 20% of F.S. : ±0.4% of F.S. *4 *5 |
| Pipe Temperature Measurement Accuracy | ±3°C ±5.4°F (liquid temperature of - 20 to + 50°C, - 4 to + 122°F ) ±5°C ±9°F (liquid temperature of 50 to + 120°C, 122 to 248°F ) (ambient operating temperature of 25°C 77°F ) *4 |
| Weight | Main unit: Approx. 1.0 kg Upper/lower bracket: Approx.1.5 kg (including sub unit) |
| Dimensions | Main unit size: 218.5 mm × 66.9 mm × 70.7 mm 8.60" × 2.63" × 2.78" |
| Supported Pipe Diameter | 1 1/2" (40 A), ø44 to ø55 1.73" to 2.17" 2" (50 A), ø55 to ø64 2.17" to 2.52" |
| Supported Pipe Materials | Metal / resin *1 |
| Ambient Temperature | - 20 to + 60°C - 4.0 to 140 °F (no freezing) *2 |
- Brand: Keyence
Mfr # FD-R50
$2,754.35
Delivery by Thu, Oct 29
Availability: In Stock
- 12-month warranty
- 30-day returns
- Free shipping: $50+ US · $350+ International
- Sourced & inspected
