Ultrasonic Range Finder SCXL MaxSonar WRST7 MB7574

Introduction

The weather resistant SCXL-MaxSonar-WRS self‑cleaning sensor is a rugged ultrasonic sensor component module. This outdoor sensor provides very short to long distance detection and ranging in a compact, robust PVC housing. The ultrasonic sensor meets the IP67 water intrusion standard and matches standard electrical 3/4‑inch PVC pipe fittings.

The MB7574 SCXL-MaxSonar-WRST7 self‑cleaning sensor is a cost-effective, rugged ultrasonic sensor that is designed for reliable snow-depth measurement. The MB7574 features a self-cleaning transducer to remove condensation and ice buildup when operating in cold conditions. The MB7374 self‑cleaning sensor is the recommended sensor for snow-depth measurement for users requiring TTL serial data. The MB7574 self‑cleaning sensor has an internal filter that is a recent biased exponential weighted average. This filter is limited to change a maximum of 1 mm per reading. The sensor accurately applies temperature compensation to every reading, using either the integrated temperature sensor or the optional external temperature sensor (HR-MaxTemp).

High output acoustic power combined with continuously variable gain, real‑time background automatic calibration, real‑time waveform signature analysis, and noise rejection algorithms results in virtually noise free distance readings. This holds true even in the presence of many of the various acoustic or electrical noise sources. The SCXL‑MaxSonar-WR sensors are factory calibrated to match narrow sensor beam patterns and provide reliable long-range detection zones.

MB7554 is the RS232 version of this sensor.

Specifications/Features

• Resolution of 1-mm
• Self‑cleaning transducer
• 0.58Hz read rate
• Internal temperature compensation
• 42kHz ultrasonic sensor measures distance to objects
• RoHS Compliant
• Read from all 3 sensor outputs: Analog Voltage, Serial, Pulse Width
• Virtually no sensor dead zone, objects closer than 50cm range as 50cm
• Operates from 2.7-5.5V
• Low 68mA average current requirement
• Small, light weight module
• Designed for easy integration into your project or product
• Operational temperature -40°C to +65°C (-40°F to +149°F)
• Real-time automatic calibration (voltage, humidity, and ambient noise)
• Firmware filtering for excellent noise tolerance and clutter rejection
• Weather resistant (IP67), optional chemical resistant F-Option
• Matches standard electrical 3/4-inch PVC pipe fittings for easy mounting (3/4-inch National Pipe Thread Straight)
• Long, narrow detection zone
• TTL Serial Output
• Recommended for snow level measurement
• Recommended for weather station monitoring
• Maximum range of 5 meters (196 inches)
• Rate-limiting filter
• Remembers last reported range when no target is detectable

Dimensions



Documents

SCXL MaxSonar WR sensor datasheet
SCXL MaxSonar WR sensor Beam width explanation
Maxbotics FAQ

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