®
Sure Cross U-GAGE K50U Ultrasonic Sensor
Datasheet
®
The Sure Cross K50U sensor works in a variety of environments to provide a measurement of the distance between the target
and the sensor. It is designed for plug-and-play use with the Wireless Q45U Node (or any other Banner 1-wire serial node), creating
a cost-effective and easy-to-use solution for monitoring remote or mobile tanks and totes.
Benefits
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Monitor wirelessly to avoid long cable runs
Threaded housing for easy installation
Easily monitor remote and mobile tanks and totes
Completely wireless solution with 2+ year battery life at default sample rates
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Provides a distance measurement from the target to the sensor
Built-in temperature compensation
Rugged design for demanding sensing environments; rated IEC IP67, NEMA 6P
Connects using a 1-wire serial interface
Designed to work with FlexPower 1-Wire Serial Interface Node models
DX80N9X1S-P6 and DX80N2X1S-P6, the 10 to 30 V dc powered 1-Wire Serial
Interface Node models DX80N9X6S-P6 and DX80N2X6S-P6, MultiHop M-H6 and
M-H6L radios, and Wireless Q45 Sensor Nodes DX80N2Q45U and DX80N9Q45U
WARNING: Not To Be Used for Personnel Protection
Never use this device as a sensing device for personnel protection. Doing so could lead to serious injury or
death. This device does not include the self-checking redundant circuitry necessary to allow its use in
personnel safety applications. A sensor failure or malfunction can cause either an energized or de-energized
sensor output condition.
Models
Model
Range and Frequency
Supply Voltage
I/O
Range: 100 mm to 1 m (3.94 in to 39.4 in)
Freq: 224 kHz
K50UX1ARA
K50UX1CRA
3.6 to 5.5 V dc or 10
to 30 V dc
Distance to target using
a 1-wire serial interface
Range: 300 mm to 3 m (11.8 in to 118 in)
Freq: 114 kHz
Overview
The K50U is an easy-to-use ultrasonic sensor with extended range and built-in temperature compensation. This sensor is designed
to interface with a Node with 1-Wire Serial Interface. To install the sensor to either the serial Node or a cable, follow these
instructions:
1. Align the notch in the Node’s or cable’s female connector with the key in the sensor’s male connector.
2. Gently slide the sensor end into the Node’s or cable’s connector.
3. Rotate the Node’s or cable’s threaded nut to tighten the sensor down. DO NOT attempt to rotate the sensor after it is
connected to the Node’s serial port or the cable end, this will damage the sensor.
Indicator LEDs communicate the status of the sensor. The flashing green Power LED indicates the sensor is in Run Mode (the
sensor’s normal operating condition).
®
Configure this sensor using the Sure Cross Sensor Configuration Tool (instruction manual 170002) and adapter cable BWA-
USB1WIRE-001 (datasheet 170020).
Principles of Operation
Ultrasonic sensors emit one or multiple pulses of ultrasonic energy, which travel through the air at the speed of sound. A portion of
this energy reflects off the target and travels back to the sensor. The sensor measures the total time required for the energy to
reach the target and return to the sensor. The distance to the object is then calculated using the following formula: D = ct ÷ 2
Original Document
191599 Rev. F
2 May 2018
191599
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