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4 Functional principle – Ultrasonic-flow measurement
All other possibilities to transmit the volume fractions of the individual gas compo-
nents on the USM-GT-400, will use interface 2 of the USM-GT-400.
Terminal connections
44
The following figure shows the terminal connections.
The SoS calculation depends in addition to the gas components also on the gas
pressure and temperature. How to measure the pressure is described in chapter
8.4; temperature measurement is given in chapter 7.4. Setting of the parameters
AX-02 "SoS Source Temp." and AX-03 "SoS Source Pressure" allows to select
whether these measured values of temperature and pressure are used for AGA-10
calculation or default values AX-04 and AX-05.
Manual USM GT400 · EN10 · May 2021
1
Terminal connections
2
COM
3
Gas-Chromatograph
Fig. 4.4: Terminal connections
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