®
U-GAGE Q45U Long-Range Ultrasonic Sensors
Pump-in Application
Pump-out Application
(switch #1 on)
(switch #1 off)
Sensor
Sensor
3
1
2
2
1
3
High Level (Near Limit)
Initial Level
High Level (Near Limit)
Initial Level
Low Level (Far Limit)
Low Level (Far Limit)
Flow
Flow
Pump Control
1
2
3
Initial Tank Level - Outputs are INACTIVE
1
Initial Tank Level - Outputs are INACTIVE
Level Drops Below Far Limit - Outputs ACTIVE
Level Rises Above Near Limit - Outputs DEACTIVATE
2
3
Level Rises Above Near Limit - Outputs ACTIVE
Level Drops Below Far Limit - Outputs DEACTIVATE
Note: If no echo is received by the sensor, the target is assumed to be beyond the far window limit.
Figure 3. High/Low Control (DIP Switch 2 in ON)
The HIGH/LOW mode (DIP switch 2 is ON) provides the switching logic required for fill-level, web tensioning control, and similar
applications. In the HIGH/LOW mode, the output energizes when the target reaches the first sensing window limit, and stays
energized until the target moves to the second limit. The output then de-energizes at the second limit and does not re-energize
until the target moves, again, to the first limit. This example shows how pumping action might be controlled, directly, by the sensor
in a fill-level application.
Programming the Window Limit
Use the Limits button, located under the transparent top cover, to program the near and the far limits.
The near limit may be set as close as 250 mm (9.8 in) and the far limit may be set as far as 3.0 m (118 in) from the transducer face.
The minimum window width is 25 mm (1.0 in). When possible, use the actual target to be sensed when setting the window limits.
Programming the window limit begins with the sensor in Run mode.
1. Push and hold the Limits button until the green LED turns off (approximately 2 seconds).
Green LED
Off
Amber LED
Red LED
On to indicate the sensor is ready to
program the first limit
Flashes to indicate the strength of the
echo; Off if no target is present
2. Set the first limit (near or far) by placing the target at the first limit and pressing the Limits button for less than 2 seconds.
Green LED
Off
Amber LED
Red LED
Flashes at 2 Hz to indicate the sensor is
ready to program the second limit
On for a moment, then resumes flashing to
indicate the strength of the echo
3. Set the second limit (far or near) by placing the target at the second limit and pressing the Limits button for less than 2
seconds.
Green LED
Amber LED
Red LED
On for a moment, then is either on or off to On for a moment, then resumes flashing to
Off, then turns on when the sensor returns
to Run mode
indicate the output state when the sensor
returns to Run mode
indicate the strength of the echo when the
sensor returns to Run mode
Notes regarding window limit programming:
P/N 48454 Rev. F
www.bannerengineering.com - Tel: +1-763-544-3164
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