Watson-Marlow expands chemical metering pump series
The upgrade has been facilitated by the addition of a newly designed relay PCB for the Universal + Relay (R) Model.

Watson-Marlow Fluid Technology Group (WMFTG) has added to its Qdos chemical metering pump series with four configurable outputs to help users eliminate the need for additional PLCs and provide extra flexibility when communicating with SCADA or other external monitoring systems.

All Qdos Universal + Relay pumps produced by WMFTG from March 2020 will feature four changeover relay outputs, with either 110VAC 4A or 24VDC 4A contact rating. These will sit alongside the current 4-20mA, providing a total of five outputs.

The upgrade has been facilitated by the addition of a newly designed relay PCB for the Universal + Relay (R) Model. To allow quick set-up of the four outputs, the software has been modified to allow for simple and intuitive configuration.

These new hardware and software measures have been introduced as part of WMFTG’s continuous improvement programme for the Qdos pump range. Qdos peristaltic chemical metering pumps deliver flow rates that remain constant up to 7 bar and offer long maintenance intervals, reducing the impact of process downtime and lowering the total cost of ownership.