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17 USM GT400 Glossary
In this chapter you will be given information on terminology.
Ultrasonic gas meter (USM)
The flow of the gas is measured at different levels with ultrasonic transducers.
Ultrasonic electronics (USE)
The ultrasonic electronics are mounted on the ultrasonic gas meter. The ultrasonic
electronics evaluate the data recorded by the sensors. The parameters can be dis-
played and evaluated on a computer with the USM software.
Plot
Graphic display of one or more measured values.
Meter
In der Software wird der Ultraschallzähler zum Teil als Messwerk bezeichnet.
Device
In the software the ultrasonic gas meter is sometimes called a meter.
Transducer
The transducer or sensor is built into the device. The transducer sends the oppos-
ing transducer an ultrasonic signal. Using the time measured for the ultrasonic
signal to travel the distance between the two transducers, the ultrasonic electron-
ics calculates the gas flow. 12 transducers are built into the device. They are dis-
tributed across three levels with four transducers on every level. Per level two
paths measure the gas flow. A path comprises two opposing transducers.
In the manual the transducer is called a sensor.
Sensor
Transducer
Meter
Ultrasonic gas meter (USM)
17 USM GT400 Glossary
Manual USM GT400 · EN10 · May 2021
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