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Non-intrusive Clamp-on Flowmeters Non-intrusive Clamp-on Flowmeters

Whether you need temporary flow verification, a permanent non-intrusive solution, or help solving a difficult measurement challenge, our team can assess your application and recommend the right Flexim solution.

Ultrasonic clamp-on technology has advanced significantly, making it suitable for an extremely wide range of applications while delivering accurate, reliable flow data. Key advantages—such as low installation cost, simple mounting on existing piping, and the elimination of wetted parts and potential leak points—make it especially attractive for corrosive or hazardous processes. With no mechanical components exposed to the process, maintenance requirements are also greatly reduced.

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Solutions & Industries

Ground Water and Process Water Monitoring

Efficient water management is critical for mining operations, where limited visibility into water flows can increase operating costs, elevate environmental and safety risks, and disrupt production. Reliable flow data is the foundation for effective control of both ground water and process water systems.
 

Non‑Intrusive Flow Measurement Without Disrupting Operations

FLEXIM’s non‑intrusive ultrasonic flow meters provide accurate, reliable measurement without interrupting mining operations. The clamp‑on design installs directly onto existing piping with no cutting, no process shutdowns, and no heavy infrastructure or crane requirements. This makes FLEXIM solutions ideally suited for retrofits, remote sites, and locations with difficult access or strict safety constraints.
 

Reliable Performance with Minimal Maintenance

Because the sensors never contact the process, there are no wetted parts, no abrasion, and no risk of clogging. Maintenance requirements are minimal, long‑term accuracy remains high, and total cost of ownership is significantly reduced compared to intrusive flow technologies.

This non‑contact approach allows mining operations to maintain continuous flow monitoring while avoiding the risks and costs associated with inline installations.
 

Designed for Demanding Mining Environments

FLEXIM solutions are well suited for monitoring ground water extraction, dewatering systems, and critical process water circuits across mining operations. The robust clamp‑on design supports continuous operation in harsh environments while preserving pipe integrity and system reliability.

Purpose‑built solutions such as the FLUXUS® F532WD and FLUXUS® F731WD are specifically designed for water distribution applications, providing dependable flow measurement for mining water management systems.
 

Improve Water Stewardship and Operational Control

For mining operations focused on improving water stewardship, controlling operating costs, and maintaining safe, uninterrupted production, FLEXIM delivers a fast, safe, and economical solution for ground water and process water measurement.


LEARN MORE  Flexim FLUXUS F532WD Stationary Ultrasonic Water Flow Meter

LEARN MORE  Flexim FLUXUS F731 WD - Stationary Ultrasonic Water Flow Meter

Accurate, reliable flow and temperature data is essential for water and wastewater utilities facing aging infrastructure, water loss, and increasing performance expectations. FLEXIM delivers permanent, non-intrusive measurement solutions designed specifically for long-term utility operation.
 

Drift-Free Measurement for Distribution and Collection Networks

FLEXIM’s FLUXUS® WD non-intrusive ultrasonic meters provide long-term accuracy without drift. Installed on the outside of the pipe, they eliminate cutting, shutdowns, and recalibration while delivering consistent performance over the full life of the system. Factory-matched piezo transducers and advanced calibration ensure measurement stability utility operators can rely on.
 

Detect Leaks with Ultra-Low-Flow Sensitivity

With sensitivity down to 0.03 ft/s (0.01 m/s), FLUXUS® WD excels at minimum night flow monitoring, a critical technique for identifying leakage in water distribution networks. This precision allows utilities to detect losses earlier, reduce non-revenue water, and prioritize maintenance resources more effectively.
 

Integrated Temperature Measurement for Water Quality Insight

Non-intrusive temperature measurement provides additional visibility into network conditions. Elevated water temperatures, particularly in low-flow or stagnant areas, can increase the risk of bacterial growth. FLUXUS® WD enables simultaneous monitoring of flow, velocity, and temperature using a single clamp-on device, supporting both hydraulic efficiency and water quality management without introducing sensors into the process.
 

Built for Buried and Long-Term Installations

Designed for harsh utility environments, FLUXUS® WD features IP68-rated transducers, permanent maintenance-free coupling pads, and robust stainless-steel mounting hardware. Transducers can be installed in chambers or directly buried, eliminating the need for vault construction.

Compatible with virtually all pipe materials, including challenging applications such as FRP, and available for pipe sizes ranging from small distribution lines to large transmission mains, FLUXUS® WD integrates seamlessly into existing water and wastewater networks.
 

A Reliable, Future-Ready Utility Solution

By minimizing installation costs, eliminating maintenance, and delivering unmatched low-flow accuracy, FLEXIM provides water and wastewater operators with a dependable, long-term solution for flow and temperature monitoring wherever accuracy matters most.

Accurate sulfuric acid flow and concentration measurement is critical in mining operations, where errors can directly impact leaching efficiency, metal recovery, reagent consumption, and overall process safety. Reliable, real‑time data is essential across sulfuric acid applications, from acid plant control to transport, distribution, and raffinate recycling.
 

Non‑Intrusive Measurement Without Process Risk

FLEXIM’s PIOX® S non‑intrusive ultrasonic technology delivers reliable sulfuric acid measurement without ever contacting the process. Mounted externally on the pipe, it measures sulfuric acid concentration and mass flow directly on live production lines with no pipe cutting, no welding, no flanges, and no exposure to hazardous media.
 

Improved Safety and Reduced Downtime

The fully clamp‑on design enhances both plant and operator safety by eliminating potential leak paths and avoiding downtime associated with intrusive installations. Without wetted parts, the measurement remains free of abrasion, corrosion, and buildup, even in aggressive acid service.
 

Reliable Performance Across Extreme Conditions

PIOX® S delivers stable, long‑term performance across a wide range of operating conditions, including elevated temperatures up to 1166 °F. This makes it well suited for demanding mining applications where traditional inline instruments struggle with material compatibility and maintenance requirements.
 

Accurate Measurement Across the Full Concentration Range

From dilute sulfuric acid solutions to oleum, FLEXIM provides a safe, accurate, and dependable solution for critical sulfuric acid flow, concentration, and density measurement in modern mining operations.

Compressed air is one of the most expensive utilities in mining, yet up to 30 percent of its useful energy can be lost due to leaks, inefficiencies, and limited system visibility. Accurate flow measurement is essential for balancing air networks, identifying losses, and improving overall energy efficiency.
 

Non‑Intrusive Measurement Without Pressure Loss or Downtime

FLEXIM’s FLUXUS® CA non‑intrusive ultrasonic flow meters provide a fast, safe, and highly accurate way to monitor compressed air without cutting pipes, shutting down processes, or introducing new leak risks. Installed on the outside of the line, they eliminate pressure drop, contamination concerns, and mechanical wear commonly associated with inline meters.
 

High Sensitivity for Leak Detection and System Optimization

FLUXUS® CA offers exceptional low‑flow sensitivity, capable of detecting flows as low as 0.03 ft/s. Compatibility with operating pressures down to 45 psi, and even atmospheric pressure on plastic pipe, allows reliable measurement across a wide range of compressed air systems.

This performance makes FLUXUS® CA well suited for identifying leaks, validating system balancing efforts, and improving compressed air efficiency across mining operations.
 

Maintenance‑Free Operation in Harsh Environments

The fully clamp‑on design features no moving parts, no mechanical wear, and no transducer greasing. With no contact with the process, FLUXUS® CA operates maintenance‑free while preserving long‑term measurement stability and system integrity.
 

Flexible Solutions for Audits and Continuous Monitoring

Available in both portable and permanent configurations, FLUXUS® CA supports energy audits, leak detection programs, consumption metering, line balancing, and compressor efficiency monitoring. All measurements are performed while keeping the pipe system fully intact and free from installation‑related downtime.
 

Reduce Energy Costs and Improve Operational Efficiency

For mining operations focused on reducing energy costs, eliminating compressed air losses, and improving system performance, FLEXIM provides a safe, accurate, and versatile solution for compressed air measurement.

Efficient thermal energy management is critical for modern buildings and industrial facilities. Rising energy costs, tightening environmental regulations, and growing sustainability goals make accurate flow and energy measurement essential across utility systems. Reliable real‑time data is the foundation for effective control, optimization, and verification.
 

Non‑Intrusive Thermal Energy Measurement Without Disruption

FLEXIM’s clamp‑on thermal energy ultrasonic meters deliver accurate flow and temperature differential measurement without interrupting operations. Installed directly on the outside of the pipe, they eliminate pipe cutting, welding, shutdowns, and pressure drop, making them ideal for both new installations and retrofit projects.

These non‑intrusive meters support a wide range of applications, including chiller and heating plants, district energy networks, HVAC systems, submetering, leak detection, and combined heat and power plants.
 

High Accuracy for Energy Control and Billing Confidence

With up to 1 percent flow accuracy and 0.03 °F temperature differential resolution, FLUXUS® meters excel in demanding energy measurement tasks. Common applications include verifying built‑in BTU meters, monitoring chilled and hot water supply, measuring domestic and condenser water, and tracking steam condensate return.

Their ability to measure extremely low flow rates, often encountered during off‑peak operation, helps prevent lost revenue, ensures accurate energy allocation, and supports robust measurement and verification programs.
 

Maintenance‑Free Performance with Long‑Term Stability

Because sensors never contact the process, FLEXIM meters are completely maintenance‑free. The patented permanent coupling pad eliminates grease associated with traditional clamp‑on technologies, while embedded RTDs and advanced signal processing maintain long‑term zero stability without drift or recalibration.

Thousands of installations worldwide continue operating reliably for years without service.
 

Support for a Full Range of Energy Initiatives

FLEXIM solutions support a wide spectrum of thermal energy and utility monitoring programs, including:

  • Energy audits and optimization
  • Billing and cost allocation
  • Verification of existing metering
  • Demand response and load management
  • Retrofits and system balancing
  • Compliance with standards such as EN 1434
  • Sustainability initiatives including LEED, Energy Star, AASHE STARS, and Local Law 87
 

A Modern Platform for Energy Efficiency and Sustainability

For organizations focused on improving energy efficiency, reducing operating costs, and meeting sustainability objectives, FLEXIM’s FLUXUS® Energy platform provides a powerful, accurate, and non‑intrusive solution for thermal energy and utilities monitoring.

Non-Intrusive, Clamp-on Ultrasonic Technologies

Emerson’s Flexim Non-Intrusive Ultrasonic flow measurement technologies measure virtually anything that flows, liquids as well as gases. Our proprietary clamp-on ultrasonic flow meters enable operators to simply attach the transducer to the outside of the pipe – without any interruption to operations or any risk of leakage. 

FLUXUS® clamp-on ultrasonic systems determine the volume flow according to the transit-time difference method. Since the ultrasonic signal that is irradiated into the pipe is carried by the medium flowing inside, a time delay occurs between the acoustic transit time both with and against the flow of direction. This time delay can be measured very accurately. The measuring transmitter calculates the volume flowrate based on the parameters input for the pipe geometry and the physical properties of the medium stored in the internal database.



 

The reliability and accuracy of measuring systems depend on the quality of their manufacturing and calibration. Consistent quality management according to DIN ISO 9001 is essential for Flexim, which has a calibration laboratory certified to ISO/IEC 17025:2018. Calibration is carried out on individual calibration equipment according to national standards. Flexim calibrates pairs of transducers and measuring transmitters independently of one another so that the narrowly defined measurement uncertainties are always observed, regardless of which transducers are used.

The Flexim FLUXUS® Non-Intrusive Ultrasonic Flow Meters are used wherever something flows. Clamp-on technology opens up an unrivaled wide range of applications as the FLUXUS device reliably measures the flow of virtually any medium, be it liquid or gas, regardless of the flow direction (bidirectional) and over an extremely wide measuring range. Due to its practical advantages, external flow measurement with clamp-on ultrasonic transducers has become a standard measuring technique in a broad range of industries and applications.

Advanced Meter Verification (AMV) allows you to check the health of your Flexim flow measurement device directly onsite without the need of process interruption. This flow meter verification solution saves cost while ensuring the performance of your non-invasive flow measurement. The continuous acquisition and permanent storage of diagnostic values by the transmitter enables regular verification. Based on this data, maintenance can be planned, and unexpected failures can be avoided. Operators can automatically generate a flow meter verification report provides the documentation required for your quality management system.

Flexim Rental Program Flexim Rental Program
FLEXIM is considered the most advanced, reliable and accurate ultrasonic flow meters in the world.

Discover the Difference –Risk Free! This allows you to test the meter in your application to prove performance before you invest in the technology. The rental unit can also be used as a check meter to validate any other measurement points in your process.
 

Rental Package

The rental package comes with everything you need!

  • 600 series portable flowmeter
  • Transducer set and mounting hardware sized for your application [additional transducers available for an additional fee]
  • Coupling gel
  • Power cable / charger
  • Quick start guide
     
    Both General Purpose and Hazardous Location options available
 

Installation and Service

An experienced Field Service Engineer can be sent to your facility to install and configure rented equipment. Upon the end of the rental period, our technician will return to decommission the equipment and provide a data log report.

FLEXIM RENTAL FORM

Vidoes

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Standard setting clamp-on flow measurement: FLUXUS F/G721
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FLUXUS F/G831 - Specifically Designed for Hazardous Process Control Applications

Contact Us

Whether you need temporary flow verification, a permanent non-intrusive solution, or help solving a difficult measurement challenge, our team can assess your application and recommend the right Flexim solution.
Talk to a Flexim Flow Measurement Expert
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