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Brand:   Keyence  |  SKU: FD-R50

Keyence Clamp-On Flow Meter (FD-R Series)

(FOR STOCK AVAILABILITY OR LEAD TIME, PLEASE CALL +1 (800) 419-5707)

Keyence FD-R Series digital flow meters clamp-on to pipes up to 8-inch in diameter, without the need for pipe modifications, ensuring quick installation with zero downtime. These flow meters offer a seamless, non-invasive way to monitor flow and temperature in a wide range of applications. Compatible with various materials—including stainless steel, iron, copper, PVC, and resin—it provides accurate, real-time monitoring for water, oils, chemicals, and other high-pressure liquids. Its rugged IP69K-rated construction ensures long-term durability, even in harsh environments.

Model

$2,344.57

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Delivery and Shipping

Orders with a total value of $100 or more qualify for free shipping. For additional information, please refer to our Shipping Policy.

Features

  • Hassle-Free Installation

    No pipe modifications or cuts needed
    Secure with a few screws & bracket
    Mounts to many types of pipes

  • Precision Monitoring

    Flow measurement with ±2.0% accuracy
    Real-time flow & temperature monitoring
    Compatible with AC & DC power

  • Maintenance Savings

    No risk of leaks, contamination or pressure loss
    No downtime during installation
    Built-in predictive maintenance

Specifications

FD-R50
FD-R80
FD-R125
FD-R1200
Maximum Rated Flow
Maximum Rated Flow
Rated flow velocity range: 5.0 m/s, Flow rate range (Typical): 1 1/2" (40 A) : 400 L/min 24 m3/h or 2" (50 A) : 600 L/min 36 m3/h
Rated flow velocity range: 5.0 m/s, Flow rate range (Typical): 2 1/2" (65 A) : 1000 L/min 60 m3/h or 3" (80 A) : 1500 L/min 90 m3/h
Rated flow velocity range: 5.0 m/s, Flow rate range (Typical): 4" (100 A) : 2500 L/min 150 m3/h or 5" (125 A) : 3700 L/min 220 m3/h
Rated flow velocity range: 5.0 m/s, Flow rate range (Typical): 6" (150 A) : 5500 L/min 330 m3/h or 8" (200 A) : 9500 L/min 570 m3/h
Supported Pipe Diameter
Supported Pipe Diameter
1 1/2" (40 A), ø 44 to ø 55 or 2" (50 A), ø 55 to ø 64
2 1/2" (65 A), ø 64 to ø 83 or 3" (80 A), ø 83 to ø 100
4" (100 A), ø 100 to ø 127 or 5" (125 A), ø 127 to ø 152
6" (150 A), ø 152 to ø 191 or 8" (200 A), ø 191 to ø 220
Supported Pipe Materials
Supported Pipe Materials
Metal/resin
Metal/resin
Metal/resin
Metal/resin
Zero Cut Flow Rate
Zero Cut Flow Rate
Zero cut: 0.3 m/s (default), Flow rate (Typical): 36 L/min 2.4 m3/h
Zero cut: 0.3 m/s (default), Flow rate (Typical): 90 L/min 5.4 m3/h
Zero cut: 0.3 m/s (default), Flow rate (Typical): 220 L/min 12 m3/h
Zero cut: 0.3 m/s (default), Flow rate (Typical): 570 L/min 36 m3/h
Weight
Weight
Main unit: Approx. 1.0 kg, Upper/lower bracket: Approx. 1.5 kg (including sub unit)
Main unit: Approx. 1.0 kg, Upper/lower bracket: Approx. 2.0 kg (including sub unit)
Main unit: Approx. 1.0 kg, Upper/lower bracket: Approx. 2.3 kg (including sub unit)
Main unit: Approx. 1.0 kg, Upper/lower bracket: Approx. 2.5 kg (including sub unit)

Support Materials

FD-R Series Clamp On Flow Meter Brochure
FD-R50 Datasheet
FD-R80 Datasheet
FD-R125 Datasheet
FD-R200 Datasheet

Have Questions?

Speak with one of our specialists to get the answers you need.

Contact US 1-800-419-5707
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Frequently Asked Questions

What countries do you ship to?

We currently ship to the United States, Canada, Australia and the UK. To enquire about shipping to a different destination, please contact us.

How long will it take to receive my order?

Standard shipping normally takes 3-5 days. Next day shipping is available on all domestic orders (for an additional charge). International shipping times depend on the products and destination (estimated at checkout).

Returns and Refunds

How do I return a product?

Items must be returned within 30 days after receiving your order. Items must be returned in the same condition in which they were received, be unworn/unused, have any tags still attached, and include all the original packaging.

How long will it take to receive my refund?

Refunds are processed within 7 days from when we receive the item(s).