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Flow Meters

Flow meters for water and process liquids: Icon Process Controls paddle wheel, ultrasonic, magnetic, turbine, oval gear and variable-area meters and flow switches, plus Swoffer current meters for open channels. Tell us the liquid, the pipe size and the flow range.

3 specialists online · Mon–Fri 8:00–4:30 ET
50 products

ERE carries flow meters for pipes and open channels. In pipes, Icon Process Controls offers in-line and insertion paddle wheel meters (1 to 33 ft/s, ±0.5% FS, pipes from 1/2 to 24 in.), the MF1000 magnetic flow meter (±0.5% of rate, full port), the UltraFlo 500 clamp-on ultrasonic meter that reads from outside the pipe, UltraFlo ultrasonic meters for low-flow dosing, the UltraFlo OGF oval gear meter for oils and other viscous liquids, a ProPulse 2 mini turbine and the RotaFlo rotameter, plus paddle and plastic flow switches. For rivers and open channels there are Swoffer 2100 and 3000 current velocity meters (0.1 to 25 ft/s).

Tell us the liquid, the pipe size, the flow range and the output you need, and we will recommend a meter.

Flow meter FAQ

Paddle wheel, magnetic or ultrasonic?

Paddle wheel meters come in-line or as insertion sensors for pipes up to 24 in., at ±0.5% FS. Magnetic meters such as the MF1000 measure conductive liquids with a full-port design and no moving parts in the flow, at ±0.5% of rate. Clamp-on ultrasonic meters read through the pipe wall, so the line does not have to be cut; small-bore ultrasonic meters handle low-flow dosing and pulsating flows.

Which meter for oil or viscous liquids?

A positive-displacement meter. The Icon UltraFlo OGF oval gear meter is made for accurate, repeatable measurement of viscous liquids such as oils and syrups, from 0.16 to 12.8 GPM on 1/4 to 1/2 in. lines.

What outputs are available?

Depending on the model: 4-20 mA, pulse, RS485 and HART on the MF1000; 4-20 mA plus pulse, relay or RS485 on the paddle wheel meters; and battery-powered versions with a local display of flow rate and total, where no power is available.

How do I measure flow in a stream or open channel?

With a current velocity meter and the velocity-area method: measure the velocity at stations across the channel with a Swoffer meter on a wading rod, and multiply by the section area. Our velocity-area method guide walks through it.