SCXL-MaxSonar® - WR/WRC™ Series
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SCXL-MaxSonar® - WR/WRC™ Series SCXL-MaxSonar®- WR/WRC™ Series The SCXL-MaxSonar-WR/WRC sensor line includes an effective self-cleaning capability designed to reduce the impact of condensation in closed or high-moisture (dew, frost, etc.) environments. This sensor is a cost-effective solution for applications where precision range-finding, low-voltage operation, space saving, low-cost, self-cleaning, and IP67 weather resistance rating is needed. This sensor component module allows users of other, more costly precision rangefinders to lower the cost of their systems without sacrificing performance. The SCXL-MaxSonar-WR/WRC self-cleaning sensor line provides high accuracy and high resolution ultrasonic proximity detection and ranging in air, with an IP67 weather resistant rating. This sensor line features 1-mm resolution, target-size and operating-voltage compensation for improved accuracy, superior rejection of outside noise sources, internal speed-of-sound temperature compensation and optional external speed-of-sound temperature compensation. The SCXL-MaxSonar-WR/WRC self-cleaning models are available in 5-meter or 10-meter models. This ultrasonic sensor ranges to objects from 30-cm* to maximum range. Objects closer than 30-cm* are typically reported as 30-cm*. The interface output formats are pulse width, analog voltage, and digital serial in either RS232 (MB7560 series) or TTL (MB7580 series). Factory calibration is standard. *For select sensors this distance is 50-cm, refer to page 5. Precision Ultrasonic Range Sensing • Self-cleaning algorithm • Reading-to-reading stability of 1-mm at 1-meter is typical1 • Factory matched accuracy, typical accuracy of 1% or better 1,2 • Target size and operating voltage compensation • Internal temperature compensation • Optional external temperature compensation • Determines range to largest object (MB7568, MB7569, MB7588, MB7589) • Excellent clutter rejection • Added chemical resistance available7 Easy to use Component Module • Easy to use interface with distance provided in a variety of outputs • Sensor automatically handles acoustic noise 2,4 • Small and easy to mount • Calibrated sensor eliminates most sensor to sensor variations Range Outputs • Pulse width, 1uS/mm resolution • Analog Voltage, 5-mm or 10mm resolution8 • Serial, 1-mm resolution (RS232 or TTL) General Characteristics • Low cost ultrasonic rangefinder • 5-meters or 10-meter detection range • Resolution of 1-mm • Distance sensor from 30-cm to 5-meters or 50-cm to 10-meters based on model • Excellent2 MTBF • Free run operation with superior noise rejection 3 • Operating temperature range from -40°C to +65°C 9 Operating voltage from 2.7V to 5.5V Current draw of ~68mA at 5V IP67 Rated Sensor should remain on and be allowed to free run for self-clean feature to operate. Applications & Uses • Tank level measurement5 • Bin level measurement • Long range object detection • Height monitors • Auto sizing • Automated factory systems Notes: 1 Refer to section that compares WR to WRC on page 5 Users are encouraged to evaluate the sensor performance in their application 3 Reference pages 10-11 for part specific timing information 4 by design 5 MB7569 or MB7589 is the recommended sensor 6 See page 9 for multi-sensor operation 7 F-Option provides additional protection from hazardous chemical environments 8 refer to Pin 3 description on page 2 9 Please reference page 12 & 13 for minimum operating voltage verses temperature information 10 Please reference page 19 for part number key. 2 Close Range Operation Applications requiring 100% reading-to-reading reliability should not use MaxSonar sensors at a distance closer than 50cm. Although most users find MaxSonar sensors to work reliably from 0 to 50cm for detecting objects in many applications, MaxBotix® Inc. does not guarantee operational reliability for objects closer than the minimum reported distance. Because of ultrasonic physics, these sensors are unable to achieve 100% reliability at close distances. _______________________________________________________________________________________________________________________________________ Warning: Personal Safety Applications We do not recommend or endorse this product be used as a component in any personal safety applications. This product is not designed, intended or authorized for such use. These sensors and controls do not include the self-checking redundant circuitry needed for such use. Such unauthorized use may create a failure of the MaxBotix® Inc. product which may result in personal injury or death. MaxBotix® Inc. will not be held liable for unauthorized use of this component. Copyright 2005 - 2014 MaxBotix Incorporated Patent 7,679,996

SCXL-MaxSonar® - WR/WRC™ Series SCXL-MaxSonar-WR Pin Out Pin 1- Temperature Sensor Connection: Leave this pin unconnected if an external temperature sensor is not used. For best accuracy, this pin is optionally connected to the HR-MaxTemp temperature sensor. Some additional information for the temperature sensor can be found on page 9 of the datasheet. Pin 2- Pulse Width Output: This pin outputs a pulse width representation of the distance with a scale factor of 1uS per mm. The pulse width output is sent with a value within 0.5% of the serial output. Pin 3- Analog Voltage Output: This pin...

SCXL-MaxSonar® - WR/WRC™ Series Self-Cleaning Description The SCXL-MaxSonar-WR sensors feature a self-cleaning protocol which gently heats the face of the transducer, and atomizes any moisture/condensation on the sensor’s transducer face. This feature allows the sensor to be used in a wide variety of applications that may experience condensation issues. Self-cleaning is needed for many such applications due to detection performance limitations resulting from condensation, including only reporting the minimum or maximum reported distance. Condensation is frequently an issue in tanks because...