MaxBotix MB7383 HRXL-MaxSonar-WRLST Long-Range Ultrasonic Sensor - IP67 PVC Housing

The MB7383 provides three simultaneous output formats: a variable-width pulse (PW), a scaling analog voltage (AN), and a TTL-level serial (TX) data stream. The pulse width and analog voltage are proportional to the measured distance. The serial output transmits ASCII character codes representing the range in millimeters. You can use any single output that matches your microcontroller or PLC input interface.

The IP67 rating signifies the sensor's PVC housing is dust-tight and can withstand temporary immersion in water up to 1 meter for 30 minutes. This allows for reliable outdoor deployment in rain, snow, or wash-down environments. For installation, ensure the cable gland or connector is properly sealed, and the sensor is mounted according to the datasheet's recommended orientation to prevent water pooling.

Real-time automatic calibration continuously adjusts the sensor's internal parameters to compensate for changes in supply voltage, ambient temperature, humidity, and acoustic noise. This feature is essential for maintaining long-term accuracy and stability in dynamic environments. It is a firmware-based process and cannot be disabled by the user, as it is integral to the sensor's noise rejection and performance.

Yes, the MB7383 is well-suited for non-contact liquid level sensing in tanks, provided the surface is relatively stable and not foamy. Its narrow beam pattern and 10-meter range make it ideal for large vessels. Mount the sensor vertically at the top of the tank, ensuring the beam path is clear of obstructions like ladders or inlet pipes. The analog or serial output can be directly fed into a PLC or data logger for continuous monitoring.