Follow MaxBotix:
RoHs Compliant

HRLV-MaxSonar®-EZ™
Sensor Line

Indoor high performance ultrasonic precision rangefinders

The high resolution HRLV‑MaxSonar‑EZ senors are high performance ultrasonic sensors with noise rejection, improved automatic calibration, and factory calibrated beam patterns. The HRLV-MaxSonar-EZ sensors have three outputs: Analog Voltage, Pulse Width, RS232 or TTL serial data.

Product 3D Models

 
 
 

Component Overview

 
  • Resolution of 1‑mm
  • 10Hz reading rate
  • Internal temperature compensation
  • Cost-effective solution where precision range-findings are needed
  • Sensor component allows users to lower the cost of their systems without sacrificing performance
  • 42kHz Ultrasonic sensor measures distance to objects
  • RoHS compliant
  • Read from all sensor outputs: Analog Voltage, RS232 or TTL Serial, and Pulse Width
  • Virtually no sensor dead zone, objects closer than 30 cm will typically range as 30 cm
  • Maximum range of 5000 mm (195 inches)
  • Tolerates outside noise sources
  • Operates from 2.5V-5.5V
  • Low 3.1mA average current requirement
  • Small, light weight module
  • Designed for easy integration into your project or product
  • Operational Temperature from -0˚C to +65˚C (+32˚F to +149˚F)
  • Real-time automatic calibration (voltage, humidity, ambient noise)
  • Option external temperature compensation HR‑MaxTemp
  • Firmware filtering for better noise tolerance and clutter rejection
  • Retail Price Range: $28.95-$37.95
  • Volume Pricing (25 or more units): Contact MaxBotix Inc.
 

Selecting a Product

 
MB1003 Ultrasonic Rangefinder
MB1003 Ultrasonic Rangefinder

MB1003 HRLV-MaxSonar-EZ0

The HRLV‑MaxSonar‑EZ0 has the widest and most sensitive beam pattern of any unit from HRLV‑MaxSonar‑EZ sensor line. An excellent low cost choice for use where high sensitivity, wide beam, or people detection is desired. Price each $37.95. More on this sensor
MB1013 Ultrasonic Rangefinder
MB1013 Ultrasonic Rangefinder

MB1013 HRLV-MaxSonar-EZ1

The HRLV‑MaxSonar‑EZ1 is our an indoor ultrasonic high resolution sensor. The HRLV‑MaxSonar‑EZ1 is a great choice for use where sensitivity is needed along with side object rejection. Price each $34.95. More on this sensor
MB1023 Ultrasonic Rangefinder
MB1023 Ultrasonic Rangefinder

MB1023 HRLV-MaxSonar-EZ2

The HRLV-MaxSonar-EZ2 is a good compromise between sensitivity and side object rejection. Price each $34.95. More on this sensor
MB1033 Ultrasonic Rangefinder
MB1033 Ultrasonic Rangefinder

MB1033 HRLV-MaxSonar-EZ3

The HRLV‑MaxSonar‑EZ3 is a narrow beam sensor with good side object rejection. Price each $34.95. More on this sensor
MB1043 Ultrasonic Rangefinder
MB1043 Ultrasonic Rangefinder

MB1043 HRLV-MaxSonar-EZ4

The HRLV-MaxSonar-EZ4 is the narrowest beam width sensor that is also the least sensitive to side objects offered in the HRLV‑MaxSonar‑EZ sensor line. This sensor is an excellent choice for large target applications. Price each $34.95. More on this sensor
The HRLV‑MaxSonar‑EZ Sensors At a Glance
 
People Detection
Wide Beam
High Sensitivity
 
Best Balance
 
 Large Targets
Narrow Beam
Noise Tolerance
 

 
 

Different applications require different sensors. The HRLV‑MaxSonar‑EZ product line offers varied sensitivity to allow you to select the best sensor to meet your needs.

The diagram above shows how each product balances sensitivity and noise tolerance. This does not effect the maximum range, pin outputs, or other operations of the sensor. To view how each sensor will function to different sized targets reference the HRLV‑MaxSonar‑EZ Beam Patterns.

For further help in selecting a sensor use our Ultrasonic Sensor Selection Guide.

Easy to Use Ultrasonic Sensors

The HRLV‑MaxSonar‑EZ products are high resolution ultrasonic sensors, that provide a component module solution that offers easy to use outputs, no sensor dead zone, calibrated beam patterns, stable range readings, low power demands, and a host of other features detailed in the product datasheets.

1mm Resolution

The HRLV-MaxSonar-EZ Sensors offer calibrated 1 mm accuracy of 0.1% at 1 meter.

Internal Temperature Compensation

The speed of sound in air increases about 0.6 meters per second, per degree centigrade. Because of this, each HRLV‑MaxSonar‑EZ is equipped with an internal temperature sensor which allows the sensor to apply a compensation for speed of sound changes.

With the internal temperature sensor, range readings immediately (within twenty seconds) after power up are the most accurate, and this is ideal for battery applications where the sensor is powered off most of the time. The self heating (15mW at 5V, or 8mW at 3.3V) will change the temperature of the sensor by 3 degrees C or so. (The amount of self heating is also slightly dependent upon user mounting). As such, self heating will cause the sensor to read the actual air temperature inaccurately.

External Temperature Sensor

With the HR‑MaxTemp connected to the HRLV‑MaxSonar‑EZ line of sensors, realtime automatic temperature compensation is available. The HR-MaxTemp allows the HRLV‑MaxSonar‑EZ sensor to monitor the changes to air temperature while ignoring self-heating.

Self-heating is an issue with internal temperature sensors, where the temperature increase is typically 2 to 5 degrees centigrade. If ignored this will cause a drift of the reported of up to 3%.

The HRLV‑MaxSonar‑EZ is designed to used alongside the HR‑MaxTemp temperature sensor. On power-up the HRLV‑MaxSonar‑EZ will automatically detect an attached temperature sensor and begin to apply temperature compensation for the speed of sound changes to all range outputs.

The Interface

The HRLV‑MaxSonar‑EZ interface is designed to be very easy and intuitive to use. The interface output formats included are pulse width output, analog voltage output, and asynchronous serial RS232 or TTL (using a soldered jumper) output. All interfaces work without user code or complicated setup strings.

The Power Requirements

The HRLV‑MaxSonar‑EZ functions throughout a 2.5V to 5.5V operational voltage range.  This allows for easy integration from 2.5V to 5.5V and means that users of low voltage microcontrollers, or those who wish to operate in solar or battery based systems do not have to provide an extra power supply for the sensor.

The HRLV‑MaxSonar‑EZ sensors have a 3.1mA average current draw during free ranging operation.

The Controlled Beam Shape

Similar ultrasonic products may have frequent side lobe detection and can even falsely trigger on objects behind or to the sides of the sensor. The HRLV‑MaxSonar‑EZ offers a controlled beam that is designed to reject small objects (clutter) outside of the central beam area and provides long range sensitivity without detecting frivolous or unwanted targets.

Users are encouraged to pick the product with the sensitivity that best matches their application.  In the HRLV‑MaxSonar‑EZ product line the product with the widest beam is the MB1003. The product with the narrowest beam is the MB1043.

The Calibration

Each HRLV‑MaxSonar‑EZ is tested for proper operation at our facility and comes with a factory calibrated beam pattern to help ensure consistent operation of the sensor even from part to part.

The HRLV‑MaxSonar‑EZ automatically calibrates to its environment before every range reading. This calibration includes voltage, humidity, acoustic noise, electrical noise conditions, and compensation for temperature.

Product Documentation

 
Datasheet

MB1003..........................................................HRLV-MaxSonar-EZ0 Datasheet
MB1013..........................................................HRLV-MaxSonar-EZ1 Datasheet
MB1023..........................................................HRLV-MaxSonar-EZ2 Datasheet
MB1033..........................................................HRLV-MaxSonar-EZ3 Datasheet
MB1043..........................................................HRLV-MaxSonar-EZ4 Datasheet
High Resolution Pictures.....................................HRLV-MaxSonar-EZ High Resolution Pictures.zip

Application Notes

Ultrasonic Sensor Selection Guide.......................Ultrasonic Sensor Selection Guide
Direction and Distance to a Pole ........................Direction and Distance to a Pole
LV-MaxSonar-EZ Quick Start Guide.....................LV-MaxSonar-EZ Quick Start Guide

Key Improvements Over the LV-MaxSonar-EZ Sensors

 
  • Higher resolution output
  • Automatic calibration of, noise, humidity, and voltage for consistent, long term, operation.
  • Automatical compensate for speed of sound changes due to the effects temperature changes
  • Advanced firmware to handle a variety of noise sources
  • Simultaneous multiple sensor operation
  • Noise filtering is even better than previous MaxSonar products
  • Automatic target size compensation
 

Custom Solutions

For some of our customers our standard products have not fit the requirements of their particular application. As a result, we have designed and manufactured a number of custom solutions. Some of the product improvements and features have been incorporated directly into our standard products. For other users we have evaluated their specifications and charged a small NRE fee for their custom parts.

Contact MaxBotix Inc. with your application and its requirements and our engineers will work to arrive at a desirable solution.

 
Author: Scott Wielenberg  Date: 09-24-2014
4-20HR-MaxSonar-WR Ultrasonic Sensor MaxBotix Inc. launches a high performance 4-20mA output ultrasonic sensor! The new 4‑20HR‑MaxSonar‑WR sensors are high accuracy ultrasonic sensors featuring a 4‑20mA output.

The sensors are available in M30x1.5, 1” BSPP, 1” NPTS and 3/4” NPTS PVC pipe fittings.
Author: Tom Bonar  Date: 05/08/2014
MaxBotix Inc. Sensor Selection The sensors in the MaxSonar family have always been easy to use, but now we have made it even easier to select the proper sensor for your application. We have just released the new Sensor Selection Guide, that is as simple as choosing the environment type and the application.
Author: Tom Bonar  Date: 04/30/2014
How to use a MaxSonar With an Arduino The Arduino micro‑controller is one of the most popular development boards for electronics enthusiasts. With three simple interfaces, it is easy to connect a MaxSonar to an Arduino. For assistance with setup, coding, and wiring, MaxBotix Inc., has made it easier to interface our sensors with an Arduino.
Author: TB & KO  Date: 03/26/2014
UCXL-MaxSonar-WR The condensation issue in tanks and other moisture-prone environments is solved! The SCXL‑MaxSonar sensor series, based on our popular HRXL‑MaxSonar‑WR product line, features a self-cleaning protocol gently heats the face of the transducer, atomizing any condensation to prevent moisture buildup.
 
 
Author: Tom Bonar     Date:06/18/2012
Signup for notification of our exciting new products and periodic new letters. We are excited to provide the latest information from MaxBotix Inc.