Velocity meters operate linearly with respect to the volume flow rate. Because there is no square-root relationship (as with differential pressure devices), their range ability is greater. Examples of velocity meters include turbine meters, electromagnetic meters, vortex meters, and ultrasonic meters.


Products & Services
Volumetric Gas Flow Switches
Volumetric gas flow switches are devices with a switch output used for measuring the flow or quantity of a moving gas in terms of a unit of volume per unit time, such as cubic feet per minute.
Volumetric Liquid Flow Switches
Volumetric liquid flow switches measure the flow or quantity of a moving fluid in terms of a unit of volume per time, such as liters per minute. These flow sensing devices have a switch output.
Velocity Flow Switches
Gas flow switches and liquid flow switches, velocity, are used to measure the flow or quantity of a moving fluid in terms of velocity, such as feet per minute.
Mass Flow Switches
Mass liquid flow switches and mass gas flow switches are devices used for measuring the flow or quantity of a moving liquid or gas in terms of a unit of mass per unit time, such as pounds per minute. These devices may be sensors with electrical output or may be stand-alone instruments with local displays and controls.

Product Announcements
Liquid Controls Group; a Unit of IDEX Corporation - LCMag™ Electromagnetic Flow Meters
The LCMag family of electromagnetic flow meters offers the best solution for measuring the flow of electrically conductive liquids (5µS/cm minimum). A production sensor consists of a stainless steel... (read more)
Liquid Controls Group; a Unit of IDEX Corporation - Sponsler flowmeters for Liquid or Gas Measurement
High Resolution Simple Installation Compact Design Low Pressure Drop Variety of End Fittings Wide Flow Range Low Maintenance Cost Available with a wide variety of outputs... (read more)
Nice Instrumentation, Inc. - New Technology- Vortex
Nice Instrumentation ’s MASS Vortex Flowmeter line for steam, gases, and liquids that includes one of the first low-powered, two-wire, mass flow computers. (read more)
Liquid Controls Group; a Unit of IDEX Corporation - An Economical Solution for Flow Measurement
The new CIM100 offers an economical solution for your flow measurement requirements. Liquid Controls' CIM100 is an all-in-one metering device that provides high accuracy at a low cost. The compact... (read more)
Liquid Controls Group; a Unit of IDEX Corporation - Performs well in high pressure applications!
Wide range of materials of construction available Interfaces with electrical, electro-mechanical, or completely automated systems Manufactured in the USA Custom design and system engineering... (read more)
Liquid Controls Group; a Unit of IDEX Corporation - Liquid Controls Helps You To Gain Efficiencies
Liquid Controls provides Positive Displacement, Turbine, Electromagnetic and Coriolis Mass meters specifically designed to fit these applications. (read more)
Liquid Controls Group; a Unit of IDEX Corporation - Premier Electromagnetic Flow Measuring
Liquid Controls offers a broad selection of electromagnetic (Mag) flow meters for industrial, water, and waste water flow measurement applications worldwide. (read more)
Liquid Controls Group; a Unit of IDEX Corporation -  Accuracy is not affected by fluid characteristics
Accuracy is not affected by fluid characteristics such as viscosity, density, temperature, or suspended solids... (read more)

Topics of Interest

Gas flow meters can be roughly divided into volume flow meters and mass flow meters. Volume flow meters include area flow meters, positive displacement flow meters, and differential pressure flow...

Recent advances in flow sensing have resulted in more accurate, durable, and economical meters. Increasingly important is the ability to interface meters with a computer for instantaneous flow readout...

Most flow measurements are made by meters that are installed in-line such that all of the fluid passes through the meter body. Insertion (sampling) flow measurement is a different technique because...

Differential pressure meters (DP) include orifice plates, venturi tubes, flow nozzles, cone types, Pitot tubes, target meters, elbow tap meters and rotameters. The basic operating principle of...

Ultrasonic meters include Doppler Effect meters and time of flight meters. Doppler meters measure the frequency shifts caused by liquid flow. The frequency shift is proportional to the liquid's...