Chemical Flow Control and Gas Measurement to tie into SCADA or PLC

Hydro Instruments’ Remote Meter Panel with 4-20mA Output accurately measures and monitors the actual gas flow through a vacuum feed system, and provides a visual indication, as well as outputs a 4-20mA signal (proportional from zero to full scale).

Includes a magnet in the float and an array of sensors outside the flow meter tube that are used to sense the float position.

Can be used as a stand-alone component or incorporated into a wall panel.

How it works

As gas flow changes, the float inside the meter tube will go up or down based on the amount of force applied. The flow rate can then be determined based on calibrated markings on the glass meter tube. Hydro Instruments has taken this concept and incorporated magnetic fields. A magnet of appropriate size and weight is situated inside the meter tube float, and behind the meter tube itself are sensors able to detect the magnetic field. As the magnet passes these sensors, the floats physical location in the meter tube can be determined by a 4-20 mA current, generated based on its position.