The Varec Biogas 2592 Series Cover Position Indicator is designed for use with vertically-guided or spirally-guided floating digester and gas storage/holder covers. The unit incorporates the use of a gaugehead to continuously monitor the position of floating covers. Plant operators can easily monitor cover position, which provides an indication to the current status of the digester or gas storage/holder. This includes the addition of raw solids, withdrawal of liquor or digested solids, and changes in gas storage volume.
The 2592 Series provides a local readout of cover position. The gaugehead conveniently mounts to the digester wall, at eye-level. Transmitters are available to provide a remote signal in several different protocols including 4-20 mA, Modbus and Hart as examples. Limit switches can be added to control alarms or other equipment.
Cover position indicators for spirally guided gas storage/holder covers require a Current Output Transmitter and a local display for proper cover position indication. Refer to Model 8200 literature for\ additional information.