Case-Drain Monitoring
Direct-reading flowmeters monitor changes in the efficiency of pump case drains by keeping tabs on any increase in case-drain flow.
Direct-reading flowmeters monitor
changes in
the efficiency of
pump case
drains by
keeping tabs on any increase in
case-drain flow. Excessive casedrain flow indicates that a pump is
beginning to fail.
The Variable Area meter has a 1 to
5-psig pressure drop with an accuracy of 2% of full scale. The device can be installed in any position with no special piping or flow
straighteners. The EZ-View polysulfone Variable Area meter provides
5% full-scale accuracy. The Flow
Alert reed switch and MR Flow
Transmitter are higher-end casedrain monitoring systems. The reed
switch automatically signals an
alarm if case-drain flow increases
beyond a predetermined limit. The
switch can automatically open or
close electrical circuits, or activate
warning lights and audible alarms
by connecting to a PLC. MR Flow
Transmitters have an onboard digital display and electronic output
signal with 4-to-20-mA, and 0-to-5
or 0-to-10-Vdc analog outputs.
Hedland, 8635 Washington Ave.,
Racine, WI 53406, (800) 433-5263, hedland.com