LIQUI-FLOW™ Series L10/L20 are digital Liquid Flow Meters/Controllers for low flow ranges. The instruments operate on a thermal, thru-flow measuring principle. The flow meter can be connected to a control valve to form a closed control loop.

Lowest range 0,25 ... 5 g/h
Highest range 20 ... 1000 g/h for fluids with thermal properties similar to H₂O

Note:
For ultra low flow ranges, Bronkhorst High-Tech offers the µ-FLOW series.
Ranges: 1,5 ... 30 mg/h up to 0,1 ... 2 g/h IPA- or H₂O-equivalent.

Liquid flow controllers

Flow control is achieved by integrating a control valve onto the body of the Liquid Flow Meter. This control valve has a purge connection to eliminate air or gas during start-up. The electronic control function forms part of the normal circuitry in the meter. Alternatively the liquid flow can be controlled using a close-coupled pump.
For more information see Precise liquid dosage using a flow meter controlled pump.

Flow capacities (based on IPA or H2O equivalent)