Non-Invasive Liquid Flow Meters
Description
Non-invasive liquid flow meters are devices designed to measure the flow rate of liquids without coming into direct contact with the fluid. These meters are typically mounted externally on the pipe, allowing for flow measurement without the need to cut into the pipe or disrupt the flow.
Working Principle
Non-invasive liquid flow meters often operate using ultrasonic technology, which includes both Doppler-effect meters and time-of-flight meters. These devices work by sending ultrasonic signals through the pipe and measuring the time it takes for the signals to travel through the liquid. The difference in signal travel time is used to calculate the flow rate. This method is particularly useful because it allows for accurate flow measurement without the need for direct contact with the liquid, reducing the risk of contamination and wear.
Applications
Non-invasive liquid flow meters are used in a variety of applications where it is critical to maintain the integrity of the fluid or where the pipe cannot be altered. Specific examples include monitoring the flow of corrosive chemicals in industrial processes, measuring the flow of water in large municipal pipelines, and tracking the flow of liquids in pharmaceutical manufacturing where contamination must be avoided.
Advantages over other Liquid Flow Meters
Non-invasive flow meters offer several advantages over traditional flow meters. They eliminate the need for pipe modifications, which can be costly and time-consuming. Additionally, because they do not come into contact with the fluid, they are ideal for measuring the flow of corrosive or hazardous liquids. This also reduces maintenance requirements and extends the lifespan of the meter.
Limitations
One limitation of non-invasive liquid flow meters is that they may not be suitable for all types of fluids, particularly those with low acoustic transparency or high levels of suspended solids. Additionally, the accuracy of these meters can be affected by the condition and material of the pipe, as well as the presence of air bubbles or other disturbances in the flow.
Considerations
When selecting a non-invasive liquid flow meter, it is important to consider factors such as initial costs, which can be higher than some traditional meters due to the advanced technology involved. Operating expenses are generally lower, as these meters require less maintenance and have a longer lifespan. However, accuracy can vary depending on the specific application and installation conditions, so it is crucial to ensure that the chosen meter is suitable for the intended use. Replacement and maintenance costs are typically lower, as there is no need to replace parts that come into contact with the fluid.
from Sierra Instruments, Inc.
InnovaSonic ® 210 portable ultrasonic flow meters succeeds at delivering expanded functionality and field portability when a permanent installation is not required. The 210 is a complete liquid measurement kit with portable clamp-on transducers featuring a small handheld display interface with... [See More]
- Mounting: Non-Invasive
- Process Media Type: Liquid
- Meter Technology: Ultrasonic
- Media Temperature: -40 to 176
from PCE Instruments / PCE Americas Inc.
Ultrasonic Flow Meter with 32 GB data memory / measuring range ±32 m/s / reproducibility ±0.5 % of measured value / different measuring probes / alarm limit values / 2.8 " LC display / for all media / optionally with DAkkS or ISO calibration certificateThe ultrasonic flowmeter has a measuring range... [See More]
- Mounting: Non-Invasive
- Process Media Type: Liquid
- Meter Technology: Ultrasonic
- Meter Type: Velocity Flow Meter
from Panametrics
The TransPort PT900 portable ultrasonic liquid flow meter is Panametrics ’ newest portable clamp-on flow meter. It easily attaches to the piping fixture to measure flow within the pipe. Users have no need to cut into the pipe and cause delays and downtime. The PT900 can also be used to... [See More]
- Mounting: Non-Invasive
- Process Media Type: Liquid
- Meter Technology: Ultrasonic
- Media Temperature: -328 to 752
from Sierra Instruments, Inc.
InnovaSonic 203 ultrasonic water flow meters are optimized for customers still looking for high performance, but needing a lower-cost, less feature-rich option for dedicated clamp-on ultrasonic metering. The 203 ultrasonic water flow meter is a digital liquid flow meter optimizes the measurement of... [See More]
- Mounting: Non-Invasive
- Process Media Type: Liquid
- Meter Technology: Ultrasonic
- Media Temperature: 32 to 140
from Panametrics
The Panametrics AquaTrans AT600 clamp-on ultrasonic flow meter is a liquid clamp-on flow meter designed to be accurate, durable and cost-effective. Rugged and reliable, this meter will remain fixed to your pipe for years to come. Features and Benefits. Economical non-intrusive flow measurement. [See More]
- Mounting: Non-Invasive
- Process Media Type: Liquid
- Meter Technology: Ultrasonic
- Media Temperature: -328 to 752
from Panametrics
The Panametrics AquaTrans AT868 ultrasonic liquid flowmeter is rugged, cost-efficient, low-cost and low maintenance transmitter package ideal for water applications. This convenient, low-maintenance meter can be installed without shutting down your process, making this meter the perfect choice for... [See More]
- Mounting: Non-Invasive
- Process Media Type: Liquid
- Meter Technology: Ultrasonic
- Operating Pressure: 0.0 to 3000
from Spire Metering Technology
Our innovation never stops! This Handheld Ultrasonic flow and BTU meter, RH40, is a revolutionary portable meter with numerous features and powerful functions. It is the most compact and mobile portable flow/BTU meter on the market. The meter is completely portable and relies on clamp-on sensors to... [See More]
- Mounting: Non-Invasive
- Process Media Type: Liquid
- Meter Technology: Ultrasonic
- Media Temperature: 32 to 312
from Litre Meter Limited
Ultrasonic flowmeter system incorporating digital signal processing. Innova-Sonic offers a low power consumption, clear display and user friendly menu selection. [See More]
- Mounting: Non-Invasive
- Process Media Type: Liquid; Gas
- Meter Technology: Ultrasonic; Thermal
- Operating Pressure: 1450
from Flow Technology, Inc.
Low Flow Ultrasonic Flow Meters – SLF-100. The Model SLF-100 Ultrasonic Liquid Flow Meter is an accurate, reliable and cost-effective clamp-on ultrasonic instrument capable of measuring low flow rates through small diameter PFA tube without altering the piping. Typical applications are DI... [See More]
- Mounting: Non-Invasive
- Process Media Type: Liquid
- Meter Technology: Ultrasonic
- Media Temperature: 50 to 140
from GF Piping Systems
Ultraflow brings simplicity to the non-invasive measurement of liquid flow, offering the user quick and accurate flow measurement. Dry servicing, providing minimum downtime and maximum availability, even in a continuously running system. Compact, rugged and reliable, the Ultraflo has been designed... [See More]
- Mounting: Non-Invasive
- Process Media Type: Liquid
- Meter Technology: Ultrasonic
- Pipe Diameter: 0.50 to 78.00
from SONOTEC Ultraschallsensorik Halle GmbH
The SONOCHECK air-bubble detectors of type ABD05 detect air and gas bubbles in fluid-filled tubes and measurement chambers. These intelligent sensors can be used for the monitoring of fluids as well as for wet/dry alarm notifications. The ABD05 has been specifically developed for medical use. The... [See More]
- Mounting: Non-Invasive
- Process Media Type: Liquid
- Meter Technology: Ultrasonic
- Operating Pressure: 0.0 to 30
from OMEGA Engineering, Inc.
FDT-40E Series ultrasonic flow and energy meters clamp on to the outside of pipes and do not come in contact with the internal liquid. The technology has inherent advantages over alternate devices including: low-cost installation, no pressure head loss, no moving parts to maintain or replace, no... [See More]
- Mounting: Non-Invasive
- Process Media Type: Liquid
- Meter Technology: Ultrasonic
- Meter Type: Volumetric Flow Meter
from Micronics, Ltd.
Features. Monitor flows through partially full pipes or open channels. Eliminates the need for flumes or weirs. Automatic temperature compensation. Barriers for I S operation. 2 million point data logger. Logger software included. Irregular channel shapes. [See More]
- Mounting: Non-Invasive
- Process Media Type: Liquid
- Meter Technology: Ultrasonic
- Operating Pressure: 10
from Spirax-Sarco
UTM10 ultrasonic flow and energy meters clamp onto the outside of pipes and do not make contact with the internal liquid. The technology has inherent advantages over alternate devices including: low-cost installation, no pressure head loss, no moving parts to maintain or replace, no fluid... [See More]
- Mounting: Non-Invasive
- Process Media Type: Liquid
- Meter Technology: Ultrasonic
- Media Temperature: -40 to 351
from KOBOLD Instruments, Inc.
Product Features. Optimal Temperature Compensation. Simultaneous Monitoring of Temperature and Flow. Remote Probe Allows Installation with Minimal Clearance. Can be Used with Extremely Low Velocities. No Moving Parts. Extremely Low Pressure Loss. Easy to Operate. Insensitive to Dirt. The KAL... [See More]
- Mounting: Non-Invasive
- Process Media Type: Liquid
- Meter Technology: Thermal
- Operating Pressure: 1450
from Gemu Valves
The flowmeter operates according to the variable area principle. Metering tubes are available in Trogamid-T, suitable for inert media, and polysulfone, suitable for corrosive media (PVC and PVDF tubes on request). Male threads moulded onto the ends of the metering tube allow for easy mounting of... [See More]
- Mounting: Non-Invasive
- Process Media Type: Liquid
- Meter Technology: Rotameter; Variable Area
- Operating Pressure: 17.4 to 218
from FLEXIM AMERICAS Corp.
Designed for the needs of the Water and Wastewater Industry. The flow meter's transducers are small and practical, watertight and equipped with rugged integrated cables. Thanks to the clamp-on technology, no cutting or welding work is needed to mount the transducers on the pipe. Thus, they are... [See More]
- Mounting: Non-Invasive
- Process Media Type: Liquid
- Meter Technology: Ultrasonic
- Media Temperature: -40 to 210
from Malema Sensors
The M-1500P Series with DSP Technology consists of an inline primary flow sensor and externally mounted controller unit. The flow sensor is a straight - through flow tube that uses ultrasonic sensing technology to measure the flow rate. The Controller Electronics receives the raw flow rate signal... [See More]
- Mounting: Non-Invasive
- Process Media Type: Liquid
- Meter Technology: Ultrasonic
- Operating Pressure: 70
from Sensirion
With a tiny footprint of only 10x10 mm2, Sensirion ’s LPG10 liquid flow sensor series provides outstanding performance and speed in measuring liquid flow in a planar microfluidic glass substrate with down-mount fluidic ports for a highly compact integration into any fluidic manifold system. It... [See More]
- Mounting: Non-Invasive
- Process Media Type: Liquid
- Meter Technology: Thermal
- Operating Pressure: 43.51
from Spire Metering Technology
Like other members of the Enduro series ultrasonic flowmeters, EF10 is designed for fixed installation. Its electronic enclosure is rated for IP65 (NEMA 4X) or IP67, thus, it can be installed for both indoor and outdoor. Model EF10 Clamp-On Flowmeter. Advanced high-accuracy wall-mount ultrasonic... [See More]
- Mounting: Non-Invasive
- Process Media Type: Liquid
- Meter Technology: Ultrasonic
- Meter Type: Velocity Flow Meter
from Flow Technology, Inc.
Ultrasonic Clamp-on Flowmeters – SLF-200. The Model SLF-200 Ultrasonic Liquid Flowmeter is an accurate, reliable and cost-effective clamp-on ultrasonic instrument capable of measuring flow through metal, plastic and various other pipe material without altering the piping. Ideal installation... [See More]
- Mounting: Non-Invasive
- Process Media Type: Liquid
- Meter Technology: Ultrasonic
- Media Temperature: -4 to 140
from SONOTEC Ultraschallsensorik Halle GmbH
The SONOCHECK air-bubble detectors of type ABD06 detect air and gas bubbles in fluid-filled tubes and measurement chambers. These intelligent sensors can be used for the monitoring of fluids as well as for wet/dry alarm notifications. The ABD06 has been specifically developed for industrial use. The... [See More]
- Mounting: Non-Invasive
- Process Media Type: Liquid
- Meter Technology: Ultrasonic
- Media Temperature: 40 to 140
from OMEGA Engineering, Inc.
FDT-40 Series ultrasonic flow and energy meters clamp on to the outside of pipes and do not come in contact with the internal liquid. The technology has inherent advantages over alternate devices including: low-cost installation, no pressure head loss, no moving parts to maintain or replace, no... [See More]
- Mounting: Non-Invasive
- Process Media Type: Liquid
- Meter Technology: Ultrasonic
- Meter Type: Velocity Flow Meter
from Micronics, Ltd.
Features. Factory configured for pipe size - minimal site configuration. Simplified guide rail & sensor assembly - simple installation. Clamp-on non-invasive & low install cost. LCD with backlight - install & service information. Integrated pulse and optional 4-20mA output - aM &T... [See More]
- Mounting: Non-Invasive
- Process Media Type: Liquid
- Meter Technology: Ultrasonic
- Media Temperature: 32 to 185
from Gemu Valves
The flowmeter operates according to the variable area principle. Metering tubes are available in Trogamid-T, suitable for inert media, and Polysulfone, suitable for corrosive media (PVC and PVDF tubes on request).Male threads moulded onto the ends of the metering tube allow for easy mounting of... [See More]
- Mounting: Non-Invasive
- Process Media Type: Liquid
- Meter Technology: Rotameter; Variable Area
- Operating Pressure: 11.6 to 218
from FLEXIM AMERICAS Corp.
The ultrasonic flow meter FLUXUS ® ADM 8127 has been specifically designed for Offshore and Mining applications. The ADM 8127 flow meter's housing is made entirely of Stainless Steel. It is permanently seawater and seaspray-proof and ATEX approved for use in explosive hazard zones 1 and 2. All... [See More]
- Mounting: Non-Invasive
- Process Media Type: Liquid
- Meter Technology: Ultrasonic
- Media Temperature: -40 to 750
from Spire Metering Technology
Like other members of the EnduroFlow series ultrasonic flowmeters, the EF40 is designed for fixed installations. The electronic enclosure is rated for IP65 (NEMA 4X) or IP67, thus it can be installed for both indoor and outdoor applications. Model EF40 Clamp-On Flowmeter. Advanced high-accuracy... [See More]
- Mounting: Non-Invasive
- Process Media Type: Liquid
- Meter Technology: Ultrasonic
- Meter Type: Velocity Flow Meter
from Flow Technology, Inc.
Larger industrial piping up to 12 inches. The Model SLF-500 Ultrasonic Liquid Flowmeter is an accurate, reliable and cost-effective clamp-on ultrasonic instrument capable of measuring bidirectional flow through metal, plastic and even lined pipes without altering the piping. Ideal meter for... [See More]
- Mounting: Non-Invasive
- Process Media Type: Liquid
- Meter Technology: Ultrasonic
- Media Temperature: -4 to 140
from SONOTEC Ultraschallsensorik Halle GmbH
Combi-Sensor for Contactless Flow Metering and Air Bubble Detection on Thin Tubes. The ultrasonic compact sensor SONOFLOW CO.56 measures the flow of liquids in tubes and detects air bubbles simultaneously. Therefore the sensor unites two measuring techniques in one device: the flow metering and the... [See More]
- Mounting: Non-Invasive
- Process Media Type: Liquid
- Meter Technology: Ultrasonic
- Media Temperature: 50 to 122
from OMEGA Engineering, Inc.
FDT-21 ultrasonic flowmeter is designed to measure the fluid velocity of liquid in a full/closed pipe. It is a handheld measurement system which is both easy to install and use. The FDT-21 operates according to the difference in the transit time of flight measured, and determines the flow velocity... [See More]
- Mounting: Non-Invasive
- Process Media Type: Liquid
- Meter Technology: Ultrasonic
- Meter Type: Velocity Flow Meter
from Micronics, Ltd.
The new heat/energy metering solution from Micronics. Simple, low cost, hot or chilled water energy measurement from outside the pipe. A smarter solution than in-line meters!. The U1000 HM is an ultrasonic clamp-on heat/energy meter that uses ultrasound to measure flow rate and PT100 temperature... [See More]
- Mounting: Non-Invasive
- Process Media Type: Liquid
- Meter Technology: Ultrasonic
- Media Temperature: 32 to 185
from FLEXIM AMERICAS Corp.
The new FLUXUS F608 is based on the widely used, highly reliable and versatile F601, but has been specifically engineered for its use within hazardous areas and is covered by an ATEX certification. Thus, users are not anymore obliged to obtain a Hot Work Permit, making the access to ATEX Zones much... [See More]
- Mounting: Non-Invasive
- Process Media Type: Liquid
- Meter Technology: Ultrasonic
- Media Temperature: -40 to 392