Flow monitoring system overcomes wiring problems

The Maxiflex Digital Flow Rate System not only saves expensive cabling from source to dcS, but also enable projects to be implemented that would otherwise be economically prohibitive.

Omniflex has created a flow monitoring solution using Maxiflex, to overcome existing poor quality cabling which prohibits the measurement of four-20mA signals over long distances, as well as the problem of the availability of only digital inputs in the dcS.

The Maxiflex Solution uses a local node near the dcS and remote node near the flow transmitters, linked via Conet, which can be up to 10km long, and capable of transmitting data over poor quality links.

The remote node converts the analogue inputs into flow counts and totals them for each of the channels that it monitors.

These counts are then transmitted across the Conet LAN and stored in the local node several times per second.

The local node calculates the total flow between updates and outputs a digital bit stream from the digital output card, which is input to the dcS and then read as a weighted flow pulse.

Because Conet is an ultra-long distance network, the flow readings can now be taken from the remotest transmitters and read in the control room with very high accuracy.

The Maxiflex Digital Flow Rate System not only saves expensive cabling from source to dcS, but also enable projects to be implemented that would otherwise be economically prohibitive.

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