Flow

A MEDACS with TFML module can combine the sensors inputs to provide flow linearisation, giving a (4 to 20) mA output proportional to flow, as well as pulsing a relay in multiples of flow rate to an external totaliser.

Flow

A two channel MEDACS can take the inputs from two correctly sized flowmeters, and by using a TFML function can select the most appropriate instrument for the conditions, signalling a changeover valve to divert flow to the selected instrument. A continuous (4 to 20) mA output proportional to flow is maintained by the MEDACS.

Flow

A two channel MEDACS with a TFML module can control the valve using "look-see-do" The target flow and the actual flow can be viewed by toggling the display.

Flow

"No Flow" alarm. A single channel MEDACS with analogue and relay outputs is used with an OEM acoustic solids flow sensor.

Flow

Standard software allows power 3/2 and 5/2 flow linearisation, giving a (4 to 20) mA output proportional to flow, a simple TFML function would facilitate pulsing a relay in multiples of flow rate to an external totaliser. The optional M-scada package can provide historic and real time trending.

Flow

In this common application in rivers and waterways, two level sensors measure level up and down stream of a weed screen. Rising up upstream differential indicates screen blockage, whereby a relay contact closure initiates a weed screen rake to activate, clearing the screen. Rake is deactivated on regaining zero differential.

Flow & Level

A level controller provides (4 to 20) mA proportional to level, which is then spilt into two (4 to 20) mA spans, one proportional to level, the second proportional to head at the overflow point. Should the pumps be unable to clear the level, it overflows to storm via a V notch weir, whereby the flow is monitored by span 2 and converted to flow by the onboard flow law. This data can then be recorded.