KEYENCE 65A-80A Clamp Ultrasonic 65A/80A FD-R80 Flow Meter

( Brand: Keyence ), ( Manufacturer Part Number: 65A/80A ), ( Part Type: Clamp ), ( Flow Meter Type: Clamp-on Flow Meter ), ( Minimum Flow Rate: 24 Gpm ), ( Maximum Flow Rate: 390 Gpm )

Review KEYENCE 65a/80a Clamp on Ultrasonic Flow Meter

The **Keyence FD-R80 Clamp-On Ultrasonic Flow Meter** series, comprising the **65A** and **80A** models, represents a cutting-edge solution for precise, non-invasive flow measurement across a wide range of industrial applications. Designed with Keyence s signature blend of advanced engineering and user-centric innovation, these compact yet robust devices utilize **time-of-flight difference (ToFD) ultrasonic technology** to deliver accurate, real-time flow monitoring without the need for invasive installation or pipeline modifications. The **clamp-on design** eliminates the hassle of cutting into pipes, reducing downtime and maintenance costs while ensuring seamless integration into existing systems. Engineered for versatility, the FD-R80 series accommodates a broad spectrum of fluids, including water, wastewater, chemicals, oils, and even slurries, making it ideal for industries such as **HVAC, plumbing, chemical processing, food and beverage, and municipal water treatment**. Its **wide measurement range**, spanning from **0.01 m/s to 10 m/s**, ensures adaptability to both low-flow and high-flow applications, while the **high-frequency ultrasonic transducers** (operating at **1 MHz**) enhance signal clarity and reduce interference, even in challenging environments with turbulent flow or debris-laden fluids.

The **65A model** is optimized for **basic to intermediate applications**, offering a straightforward, user-friendly interface with a **large, backlit LCD display** that provides clear, easy-to-read data, including flow rate, totalized volume, and diagnostic information. Its **single-channel configuration** simplifies installation and setup, making it an excellent choice for single-pipe monitoring scenarios. In contrast, the **80A model** elevates functionality with **dual-channel capabilities**, enabling simultaneous measurement of flow in two separate pipes or the same pipe at different points, which is invaluable for **differential flow analysis, leak detection, or verifying flow distribution**. Both models feature **Keyence s proprietary signal processing algorithms**, which automatically compensate for temperature variations, fluid viscosity, and pipe material differences, ensuring consistent accuracy regardless of environmental conditions. The **wide-angle transducers** (measuring **80 mm in diameter**) further expand the device s flexibility, allowing it to be mounted on pipes ranging from **DN25 to DN300 (1" to 12")**, while the **adjustable mounting bracket** ensures precise alignment for optimal signal transmission.

Beyond its technical prowess, the FD-R80 series excels in **connectivity and data management**, offering **multiple communication interfaces**, including **RS-232C, USB, and Ethernet (via optional module)**, to seamlessly integrate with **SCADA systems, PLCs, or Keyence s own CX-One software** for advanced data logging, trend analysis, and remote monitoring. The **built-in memory** allows for extensive data storage, while the **optional wireless module** enables wireless connectivity, reducing wiring complexity in hard-to-reach locations. Additionally, the **Keyence Flow Meter App** provides a mobile-friendly interface for real-time monitoring and configuration, enhancing operational efficiency for field technicians. With its **IP65-rated enclosure**, the FD-R80 is built to withstand harsh industrial environments, including exposure to dust, moisture, and temperature fluctuations ranging from **-10 C to 50 C**, ensuring reliable performance in demanding settings. Whether deployed for **energy management, process optimization, or leak detection**, the Keyence FD-R80 Clamp-On Ultrasonic Flow Meter delivers unmatched precision, durability, and ease of use, making it a cornerstone of modern fluid monitoring solutions.

The Keyence FD-R80 clamp-on ultrasonic flow meter series (models 65A and 80A) is a popular choice for industrial flow measurement, but it has distinct advantages and limitations depending on the application. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

### **Pros of the Keyence FD-R80 Series**

1. **Non-Invasive Measurement**

The clamp-on design eliminates the need for pipe modifications, reducing downtime and installation costs. This is particularly useful in applications where cutting into pipelines is impractical or unsafe.

2. **High Accuracy and Repeatability**

Keyence ultrasonic flow meters are known for their precision, with typical accuracies of 1% of reading or 0.5% of full scale, depending on conditions. They maintain consistency over time, making them reliable for long-term monitoring.

3. **Versatile Pipe Material Compatibility**

The clamp-on sensors work on a wide range of materials, including steel, plastic, fiberglass, and composite pipes, without requiring direct contact with the fluid. This flexibility is valuable in industries like water treatment, HVAC, and chemical processing.

4. **Wide Flow Range**

The FD-R80 series can measure flow rates from very low (e.g., 0.01 m /h) to extremely high (up to 10,000 m /h, depending on pipe size), making it suitable for diverse applications, from small-diameter pipes to large industrial lines.

5. **Easy Installation and Maintenance**

The clamp-on design simplifies installation, as it does not require pipe cutting, welding, or pressure testing. Maintenance is minimal, primarily involving sensor cleaning and occasional calibration checks.

6. **Multiple Output Options**

The meter supports various communication protocols (RS-485, Modbus RTU, Ethernet, and analog outputs) and can integrate with SCADA systems, PLCs, or data loggers. This makes it compatible with modern industrial automation setups.

7. **Durability and Rugged Design**

Keyence devices are built to withstand harsh environments, with IP65 or higher ratings for many models, ensuring protection against dust, water, and extreme temperatures.

8. **Multi-Frequency Technology (in some models)**

The 80A model incorporates multi-frequency ultrasonic technology, which improves accuracy in challenging conditions such as turbulent flow, varying fluid velocities, or pipes with irregular surfaces.

9. **User-Friendly Interface**

The LCD display is intuitive, and the meter includes features like data logging, alarm settings, and remote monitoring capabilities, making it accessible for operators with minimal training.

10. **Compatibility with Keyence s Ecosystem**

If you already use Keyence sensors or controllers, the FD-R80 integrates seamlessly with other Keyence devices, simplifying system expansion or upgrades.

---

### **Cons of the Keyence FD-R80 Series**

1. **Limited to External Measurement**

Since the sensor clamps onto the pipe externally, it cannot measure flow in pipes with very thin walls or those made of materials that do not transmit ultrasonic waves well (e.g., some plastics or non-metallic composites). Additionally, the presence of insulation or coatings may interfere with signal transmission.

2. **Dependence on Pipe Material and Condition**

The accuracy of clamp-on meters relies on the pipe s material properties and surface condition. Rust, corrosion, or uneven surfaces can degrade performance. For optimal results, the pipe should be clean and free of obstructions.

3. **Potential Signal Interference**

In environments with high electromagnetic interference (EMI), vibrations, or extreme noise, the ultrasonic signals may be disrupted, leading to inaccurate readings. This can be mitigated with proper sensor placement and shielding.

4. **Calibration Requirements**

While Keyence meters are generally reliable, they may require periodic calibration to maintain accuracy, especially in applications with significant temperature or pressure fluctuations. This adds to long-term operational costs.

5. **Higher Upfront Cost Compared to Some Alternatives**

The FD-R80 series is priced higher than basic clamp-on meters from other brands, particularly for high-end models like the 80A. However, the investment is often justified by its accuracy and durability.

6. **Limited Support for Very Small Pipes**

The smallest pipe sizes the FD-R80 can measure effectively are typically around 15 20 mm in diameter. For micro-piping applications, other technologies (e.g., insertable or inline meters) may be more suitable.

7. **Learning Curve for Advanced Features**

While the basic operation is straightforward, configuring advanced features like multi-frequency mode or complex alarm settings may require training, especially for users unfamiliar with ultrasonic flow measurement principles.

8. **Potential for Signal Attenuation in Large Pipes**

In very large-diameter pipes (e.g., 200 mm or larger), the ultrasonic signal may weaken over longer distances, potentially requiring additional sensors or signal amplification for consistent readings.

9. **No Built-In Temperature Compensation for Some Fluids**

While the meter can measure temperature, it may not automatically compensate for temperature-induced changes in fluid viscosity or density unless configured with additional sensors or software.

10. **Warranty and Support Dependence on Keyence**

Users must rely on Keyence s customer support for repairs or replacements, which may involve longer wait times depending on regional availability. Some competitors offer more extensive local service networks.

---

### **Conclusion**

The Keyence FD-R80 clamp-on ultrasonic flow meter series is a robust and versatile tool for industrial flow measurement, particularly in applications where non-invasive installation is critical. Its strengths lie in its accuracy, ease of use, and compatibility with a wide range of pipe materials and flow conditions. The multi-frequency capability of the 80A model further enhances its performance in challenging environments.

However, its limitations such as dependence on pipe condition, potential signal interference, and higher cost must be carefully considered. It is best suited for applications where:

- Pipe modifications are impractical or costly.

- High accuracy and reliability are prioritized.

- The pipe material and surface are suitable for ultrasonic measurement.

- Integration with existing industrial systems is required.

For applications involving very small pipes, highly corrosive or abrasive fluids, or environments with extreme interference, alternative technologies (e.g., insertable ultrasonic meters, turbine meters, or magnetic flow meters) may be more appropriate.

---

### **Recommendation**

- You need a **high-accuracy, non-invasive flow meter** for industrial or commercial applications.

- Your pipes are **metallic or have a suitable surface** for ultrasonic transmission.

- You require **easy installation and minimal maintenance**.

- You are already using **Keyence equipment**, ensuring seamless integration.

- Your budget allows for a **premium, reliable solution** with long-term cost savings from reduced downtime and calibration needs.

- Your pipes are **very small (below 15 mm) or made of non-metallic materials** that poorly transmit ultrasonic waves.

- The environment has **extreme electromagnetic interference, vibrations, or signal attenuation issues**.

- You require **built-in temperature compensation** for highly viscous or temperature-sensitive fluids.

- Cost is a major constraint, and a **lower-cost clamp-on meter** from another brand (e.g., Badger, Flowtech) would suffice for your accuracy needs.

For most **mid-to-large industrial applications** where accuracy and ease of installation are paramount, the Keyence FD-R80 is an excellent choice. Always conduct a site-specific evaluation to ensure the meter s compatibility with your pipe material, flow conditions, and environmental factors.

Details:

FD-R80 ultrasonic flow meter fits 2.5 to 3 pipes.

part #: 65a80a prices

• $1500.00-$2789.00

specifications pneumativalv:

• brand: Keyence
• mpn: 65a/80a
• part type: Clamp
• flow meter type: Clamp-on Flow Meter
• minimum flow rate: 24 Gpm
• maximum flow rate: 390 Gpm

shipping pneumativalv:

• type: Calculated
• carrier: USPS, UPS, FedEx
• cost: $23.15
• class: Standard
• transit: 4-9 Days
• service: USPS Ground Advantage, UPS Ground, FedEx Ground / FedEx Home Delivery

offer pneumativalv:

• quantity: 1
• sold: 0
• options: Ship-to-home
• started: April 14, 2026
• availability: In Stock

returns pneumativalv:

• policy: No Returns

general pneumativalv:

• condition: Used
• Pump Flow Controllers > Flow Controllers Meters > Flow Meters

seller pneumativalv:

• city: Portage, Michigan
• # reviews: 957
• rating: 100.0%

payments pneumativalv:

• wallet: Paypal
• credit card: Visa
• other

Keyence 65A-80A Is Similar To:

• Keyence Fd-q10c Fd-q Series Digital Clamp-on Flow Sensor Meter System (55.7% similar) Used equipment were working when taken off only reason why they were was due to going another route with the system. Have not tested them since they are in storage...(August 8th, 2024)
• Keyence Fd-xs8e Clamp-on Microflow Sensor (63.8% similar) This item has not been tested but includes a 30-DAY warranty. Shipping services. 8-16D5-87828-CM-ZH. Keyence FD-XS8E clamp-on micro flow sensor...(August 27th, 2024)
• Keyence Fd-xa1 Clamp-on Flow Sensor 20-30vdc 195ma 4-20ma 210 Inch Wires Used (43.1% similar) Keyence FD-XA1 clamp-on flow sensor 20-30VDC 195MA 4-20MA 210 wires used, fella 1470, this item is used and in working condition...(January 13th, 2025)
• Keyence Fd-g25 Clamp-on Gas Flowmeter Operation Confirmed Working (54.2% similar) Keyence FD-G25 gas flow meter, made in japan, is a clamp-on model suitable for industrial applications. The unit has been tested and confirmed to be in working condition...(February 18th, 2025)
• Keyence Fd-r200 Clamp On Flow Meter Used (68.8% similar) Selling both for $4500 or a single one $2750 for sale: used FD-R200 clamp-on flow meters both used are in excellent condition and being sold as is...(August 28th, 2025)
• Keyence Fd-h32k Parts Clamp-on Flow Sensor High Temp Cracked Display (47.9% similar) Versatile compatibility: designed for 1/2 5a and 1/4 32A metal hard plastic pipes. Title: parts Keyence FD-H32K clamp-on flow sensor high temp cracked display, model: FD-H32K, brand: Keyence, mpn. Advanced detection: uses delta toff and pulse Doppler principles for accurate flow sensing. Items are ...(September 23rd, 2025)
• Keyence Fd-xa2 Clamp-on Micro Flow Sensor Controller Din Rail Expansion Unit (51.2% similar) Sam EU: L1UUS9LTYXG7, cage Cage: 9KWG6, section 889 compliant. This includes automation, building controls, electrical, hvac, plumbing, and industrial materials. Keyence FD-XA2 clamp-on micro flow sensor, controller, din rail, expansion unit. D-u-n-s: 01-246-1875, expiring bin: 961642662, lei: ...(October 29th, 2025)