An ultrasonic flowmeter measures liquid flow using ultrasonic signals. Many models can be installed on the outside of the pipe (clamp-on), so the pipe does not need to be cut and there is no pressure loss. Asmik ultrasonic flowmeters are used in petroleum, chemical, power generation and food processing industries.

• Transit-time method: ultrasonic signals are sent alternately upstream and downstream between two transducers. The difference in travel time is proportional to the flow velocity. This method is suited to clean, homogeneous liquids.
• Doppler method: an ultrasonic signal is reflected by particles or bubbles in the liquid, and the frequency shift of the reflected signal is proportional to the flow velocity. This method is suited to water in natural waters, channels and pipelines.

Transit-time ultrasonic flowmeters are designed for continuous measurement of most homogeneous liquids in industrial environments, such as water, and many other clean process liquids. Unlike electromagnetic flowmeters, they do not require the liquid to be conductive. Please send us your liquid details for confirmation.

A clamp-on flowmeter has transducers mounted on the outside of the pipe. No pipe cutting or process shutdown is needed for installation, and nothing is inserted into the flow, so there is no pressure loss. This makes clamp-on meters convenient for retrofits and large pipes.

Yes. The MIK-FSC400 offers both clamp-on and insertion installation options, allowing flexible installation for different pipe conditions.

• MIK-2100H Handheld ultrasonic flowmeter: portable meter for on-site measurement
• MIK-1158S Wall mounted ultrasonic flowmeter: fixed clamp-on installation
• MIK-FSC400 Wall-mounted ultrasonic flow meter: clamp-on or insertion installation for clean liquids, with heat measurement support
• MIK-FSD300 Ultrasonic Doppler flow meter: flow rate and flow of water in natural waters, channels and pipelines

If you are unsure, send us your application details and our engineers will recommend a model.

A handheld meter such as the MIK-2100H is typically used for temporary or periodic measurements, such as checking existing flowmeters, surveying flow at different points, or troubleshooting, without installing a permanent meter.

Yes. The MIK-FSC400 supports heat measurement through an integrated temperature sensor, which is useful for heating and cooling energy monitoring.

Yes. The MIK-FSD300 Ultrasonic Doppler flow meter is designed to measure the flow rate and flow of water in natural waters, channels and pipelines.

Clamp-on meters measure through the pipe wall, so the pipe material, wall thickness and lining must be entered for correct measurement. The MIK-FSC400 provides accurate, reliable measurement unaffected by pipe materials. Please tell us your pipe details when ordering.

The ultrasonic flowmeters in this category are designed for liquid measurement. For gas, consider our vortex flowmeters or MIK-MF thermal mass flowmeter.

Transit-time meters work best with clean, homogeneous liquids; large amounts of particles or bubbles can weaken the signal. Doppler meters, on the other hand, rely on particles or bubbles to reflect the signal. Please describe your liquid so we can recommend the right measuring method.

Accuracy class is up to 1.0, depending on the model, installation and application. Please check the product page of each model for its specification.

A wide operating temperature range of -30 °C to 90 °C is supported. The exact range depends on the model and transducer type; please check the product page or tell us your conditions.

Asmik ultrasonic flowmeters offer multiple output and power options for high compatibility with control and monitoring systems. Available options vary by model; please check the product page or tell us your requirements.

• Choose a location with sufficient straight pipe upstream and downstream.
• Make sure the pipe is always full of liquid at the measuring point.
• Clean the pipe surface and use coupling compound between the transducers and the pipe.
• Avoid mounting transducers at the top of horizontal pipes, where air can collect, or at the bottom, where sediment may settle.
• Enter the correct pipe outer diameter, wall thickness, material and lining in the meter.

Please follow the installation manual of the selected model.

• Ultrasonic (clamp-on): no pipe cutting and no pressure loss; measures conductive and non-conductive liquids; best with clean liquids for transit-time models.
• Electromagnetic: installed in-line; measures conductive liquids, including dirty water and slurries; generally offers higher accuracy.

They are used in petroleum, chemical, power generation, food processing, water supply and HVAC applications, especially where non-intrusive installation is preferred.

To help us select the correct model, please provide:

• Liquid name and whether it contains particles or bubbles
• Pipe outer diameter, wall thickness, material and lining
• Flow range (min / normal / max)
• Liquid temperature
• Installation type (handheld, fixed clamp-on, insertion or open channel)
• Whether heat measurement is required
• Output signal and power supply requirements
• Quantity

Send your requirements to info@asmik.com or contact us via WhatsApp at +86 13325716921.