Banner U-GAGE QT50U Ultrasonic Sensors - Manual (Page 2)

The speed of sound changes roughly 1% per 6° C (10° F). QT50U series ultrasonic sensors have temperature
compensation available, via the 8-pin DIP switch. Temperature compensation will reduce the error due to temperature by
about 90%.
NOTE: If the sensor is measuring across a temperature gradient, the compensation will be less
effective.
Configuration
3
ON
DIP
Figure 1. Removing the Access Cover
1 2 3 4 5 6 7 8
ON DIP
1 2 3 4 5 6 7 8
ON DIP
ON Position
Figure 2. DIP Switch Location
The QT50U features an 8-pin DIP switch
bank for user setup. The DIP switches are
located behind the access cover on the back
of the sensor as shown. A spanner tool is
included with each sensor for removing the
cover.
Switch Function Settings
1 PNP or NPN Select ON = Both outputs set for PNP
OFF* = Both outputs set for NPN
2 Window/Fill Level ON = High/Low (fill level control)
OFF* = ON/OFF (window)
3 Output Operation Window selected on Switch 2:
ON* = Normally open
OFF = Normally closed
Fill Level selected on Switch 2:
ON = Pump-in
OFF = Pump-out
4 Teach/Disable Control ON* = Configured for remote teach
OFF = Configured for transmit disable
5 and 6 Response (100 ms/cycle)
1 cycle
4 cycles*
8 cycles
16 cycles
Switch 5
OFF
ON*
OFF
ON
Switch 6
OFF
OFF*
ON
ON
7 Temperature Compensation ON* = Enabled
OFF = Disabled
8 Factory Calibration ON = For factory calibration only; switch should be set to OFF for use
OFF* = DIP-switch settings in control
* Factory default settings
DIP Switch Selectable Functions
CAUTION: To avoid damage to the sensor caused by static discharge (ESD), observe proper ESD
precautions (grounding) while adjusting the DIP switches.
Switch 1: Output Mode Select
ON = Both outputs set to PNP (current sourcing)
OFF = Both outputs set to NPN (current sinking)
This switch configures the sensor internally to use either the PNP or NPN output configuration.
Switch 2: High/Low Level Control
ON = High/Low (fill level control)
U-GAGE QT50UDB Series Sensors with Dual-Discrete Outputs
2 www.bannerengineering.com - tel: 763-544-3164 P/N 110112 Rev. B