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Instruction Guide – Massa M3 Wireless Sensor Evaluation Kit Page of 14

M3 Kit Guide 111017.docx 10-20-2011

PRELIMINARY

M3 Application Software

Validating the Tanks Ultrasonic Performance

This section of the Instruction Guide describes how to evaluate the ultrasonic signals being

measured in the tank, to ensure reliable level measurement. The M3 Software allows access to

sensor status information which reports distance to the liquid surface, air temperature, radio signal

strength, battery voltage, and other status information. The M3 Software also will record the signal

magnitudes vs. time of the ringing caused by the ultrasonic transmit pulse and the echoes reflected

from the targets around the sound path within the tank. This feature can be used to analyze and

determine if signals are sufficient in the application and if there are any issues that may exist, such as

unwanted reflections (see the “Understanding the Ultrasonic Waveform” section).

1) If not already running, start the M3 Application Software (Step 2 on the Page 2).

2) The first time the M3 application software is used, the comm port that connects the USB

converter must be selected. From the dropdown menu, go to “View” and select “Program

Settings”. Go to the “Serial Communications Port” menu, select a comm port, and then click

“OK”, then go to “Search for Sensors”. If the Sensor is not found, go back and select another

comm port and repeat. Once the Sensor is found, all of its settings will be uploaded.

3) When the sensor is found, it will be in the “On-Line

Sensor List”, as shown in the figure on the right.

Check the “Shown” box.

4) Point Sensor at a target such as the ceiling. Click the “Data” tab and then click the “Acquire

Data, Don’t Store” button to measure the distance to the target. Other information will also

be displayed, as shown in the figure below. Clicking on “Acquire Data, Store” performs the

same operation, but also assigns an event number that will be stored in the Sensor.

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Massa M3 Manuale Utente Pagina 4