Conventional electromagnetic metering pumps generally suffer from low resistance
to exposure of external liquids. With improved sealing of not only the control
unit but also the pump unit, a remarkable improvement to this exposure has
been achieved in the EW series. With its tough construction and high tolerance
to external liquids, the EW series can be widely used in applications ranging
from incorporation into various devices to utilization as standard equipment in
water treatment facilities.
Waterproof structure (IP65)
With the aim of improving resistance
to exposure to liquid, the controller
unit is installed on the back of the
pump and membrane switches have
been adopted for the control panel
protected with a cover as standard
equipment. A rubber gasket is provided
between the pump head and
the bracket to prevent water from
entering from the periphery of the
pump head.
High resolution
For discharge flow adjustment, a dual
control system which controls the
length of stroke and the number of
strokes employed. Since stroke by
stroke adjustment is possible, the discharge
rate can be controlled in a
wide range from a minimal flow rate to
its maximum discharge.
Multifunctional controller
The controller includes a CPU and is
equipped with double-level stop function
and external control function.
The display for the number of strokes
utilizes a high temperature type LCD
which provides extra resistance to the
direct rays of the sun.
High compression ratio
The compression rate is raised by
reducing the dead volume of the
pump head and increasing the length
of stroke, aiming at higher self-priming
capability and more effective
venting.
