APG DCU-1100 datasheet

APG

APPROVED

Rev. 12.07

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

DCU-1100 Ultrasonic Level Sensors

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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.

Class I, Div. 2 on
DCU-1100 Models

Automation Products Group, Inc.

1025 West 1700 North Tel. [phone]
Logan, UT 84321 USA Fax [phone]

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APG

Automation Products Group, Inc.

1/2" NPT

DCU-1108

1/2" NPT

3" NPT

DCU-1104

7.5

190.5

4.0

101.6

12.5

317.5

12.7

322.6

3.5

88.9

3.5

88.9

®

DCU-1100 Ultrasonic Level Sensors

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Specications

Operating Range: 2 to 50 ft. (0.6 to 15.2 m)

Output: (2) solid state relays and 4-20 mA

Supply Voltage: 24 VDC*

Total Current Draw: 110 mA @ 24 VDC

Maximum Rated Power: 3 W

Housing: PVC

Mounting: 3 NPT or 3 in. 150 lb. flange

Transducer Type: DCU-1104: ceramic, PVC faced

DCU-1108: ceramic, Teflon® faced

Ratings: NEMA 4X

Approvals: FM Class I, Div. 2

Response Time: Programmable (120 ms minimum)

Sample Rate: Programmable (8-0.125 Hz)

Resolution: 0.1 in. (2.5 mm)

Accuracy (with no temperature gradient): ±0.25% of detected range

Adjustments: Integrated keypad

Operating Temperature: -30 to 140°F (-34 to 60°C)

Temperature Compensation: Internal

Beam Pattern: 9° off axis

Connections: (10) conductor cable (6 ft. (1.8 m) standard length)

Frequency: 42 kHz

* The sensor will operate from 12-28 VDC, but the sensor performance will be diminished if the
voltage is less than 24 VDC.

Specifications are subject to change without notice.

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Wiring

DCU-1100

Red + 24 VDC

Black – VDC

Green Clock synch

White Digital pulse width

Blue Relay 1 common

Grey Relay 1 normally open

Purple Relay 2 common

Brown Relay 2 normally open

Orange 4-20 mA output

Yellow 4-20 mA ground

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Automation Products Group, Inc.

1025 West 1700 North Tel. [phone]
Logan, UT 84321 USA Fax [phone]

Dimensions — in./mm

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Ordering Information

DCU – 110

Mounting Option
4 3 NPT
8 3 in. 150 lb. flange

For information on ultrasonic sensing

✎

accessories, see www.apgsensors.com

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