Follow MaxBotix:
Ask A Question
|     Written By: Tom Bonar     |     DatePosted: 07-20-2012     |
HRXL-MaxSonar-WR Tank Test

Tank sensors are an important part of industrial automation. MaxBotix Inc., recently performed a liquid level measurement test at our facility. This test ran from July 13, 2012 until July 16, 2012. The test was conducted by filling a bin with water and recording readings from the ultrasonic sensor using the serial connection while the liquid was allowed to drain.

The graph below shows the range reported by the sensor in millimeters as the tank was drained. The plotted graph is the first 100,000 readings that were reported.

Readings were very stable, rarely changing by more than 1-mm (except where secondary reflections from the sides of the tank caused acoustic phase cancellation and readings from the tank sensor were
+/- 2mm). The raw data collected during the test is available to the public here: Tank Sensor Draining Test.

HRXL-WR Draining Test

The HRXL-MaxSonar-WRM sensors are the recommended ultrasonic sensors for tank level measurement. The MB7369 and MB7389 sensors ignore smaller targets and only reports the range to target with the largest acoustic return. The Most-Likely filter is designed to report the distance to the largest acoustic return while ignoring smaller targets. When targets are of similar amplitude reflections, preference is given to the closest target.

Pictures of our test set up can be seen below.

Trash Bin Set Up Top View Trash Bin Set Up Inside View Trash Bin Set Up Inside Lid View
 
 
 
Author: Cody Carlson  Date: 01-28-2016
PicoScope An oscilloscope displays electrical signals as they change over time. Understanding the operation of an oscilloscope allows for in depth examination of a circuit and/or electrical components. Oscilloscopes measure noise levels, cycle frequency, and other electrical specifications of a circuit. This guide covers the basic use and features of an oscilloscope.
Click here for full article.
Author: Cody Carlson  Date: 01-22-2016
mean, median, mode definitions Finding an average or standard data value can be a useful way to understand the underlying trends of your data. Averages help you look past random fluctuation and see the central trend of a data set.
Click here for full article.
Author: Cody Carlson  Date: 01-05-2016
efficiency of power supply set up An introductory guide to testing your power supply and locating power problems.
Click here for full article.
Written By: Cody Carlson  Date: 12-10-2015
Sensor We focus on in-air ultrasonic detection, however, a number of our customers have expressed interest in using our ultrasonic sensors underwater. While this is feasible, it is not without its challenges. Click here for full article.
Author: Scott Wielenberg  Date: 11-18-2015
Types of Material When designing an application that places an ultrasonic sensor in a visible location, users may wish to conceal the sensor for aesthetic purposes. Additionally, users may desire to hide the sensor to discourage individuals from tampering with the sensor. This article covers several methods that you may use to conceal a sensor. Click here for full article.
 
 
 
 
 
Signup for notification of our exciting new products and periodic new letters. We are excited to provide the latest information from MaxBotix Inc.