W A L C
H E
M
Member of the Walchem Group
Five Boynton Road Hopping Brook Park Holliston, MA 01746 USA TEL 508-429-1110 FAX 508-429-7433
WEBSITE: www.walchem.com
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Sensor
Instruction Manual
Read this manual before using product.
PRODUCT DESCRIPTION
The
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Sensor will verify that your
metering pump is truly moving liquid into the
system and has not lost prime. Utilizing
proprietary circuitry coupled with advanced
pressure sensing technology, the
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Sensor provides the most accurate and non-
intrusive flow verification device to date.
Without any moving parts in the sensor, the
standard flow path of the pump is preserved
and the liquid does not move through any gears
or lift a magnet to actuate a pulse in the sensor.
This eliminates any concern of plugging,
leaking or jamming of the flow path or sensing
mechanism.
The output signal of the
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Sensor is
an open-collector contact closure
corresponding with each flow pulse.
Additionally, a visual green LED is mounted
on the topside of the sensor. This is always
ON to indicate power and will briefly flash
OFF in sync with each output signal.
The
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will send out a signal with every stroke as long as there is liquid pumping against
pressure. If the pump becomes either air-locked or in a dead head condition, the sensor will no longer
output a signal. And unlike the competition, if the discharge line breaks or becomes disconnected,
pressure will be lost and the
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sensor will stop signaling flow.