Owner manual

1
Automation Products Group, Inc.
1025 West 1700 North Tel. [phone]
Logan, UT 84321 USA Fax [phone]
w w w . a p g s e n s o r s . c o m
s a l e s @ a p g s e n s o r s . c o m
DCU-1100 Ultrasonic Level Sensors
APG
Automation Products Group, Inc.
®
DCU -1100
Ultrasonic Level Sensors
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2 to 50 ft. (0.6 to 15.2 m) detection
range on liquids
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Internal temperature
compensation
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Programmable response time
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Maintenance free
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Programmable filtering
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Description
e DCU series sensors use
ultrasonic technology to provide a
non-contact method of determining
distance or level measurements. is
versatility makes the DCU series
ideal for a variety of applications.
e color, translucency, dielectric
constant, specific gravity or viscosity
of the target does not affect an
ultrasonic sensor. Ultrasonic sensors
function extremely well in harsh
environments, are reliable, and
require little or no maintenance.
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Operational Description
Ultrasonic sensing is very similar to
radar. e sensor transmits ultrasonic
sound waves. If the sound waves
meet a solid or reflective object,
such as a liquid, they are reflected
back and detected by the sensor. e
time of flight is measured, and since
the speed of sound is a well-known
variable, the distance to the object
can be calculated.
Until recently, the many variables
in the speed of sound created
inaccurate readings. With the advent
of microprocessor technology,
these variables can now be factored
into the equation and eliminated.
One such variable is ambient
temperature. e DCU series
incorporates internal temperature
compensation to adjust for
changes in ambient temperature.
e DCU series also incorporates
programmable filtering options
to account for other variables,
such as waves on a liquid, or tank
irregularities. e distance to the
object is converted into an analog
output signal that is user adjustable.
APPROVED
Class I, Div. 2 on
DCU-1100 Models
Rev. 12.07