mru VARIOluxx, MGAprime, MGAluxx User Manual

OPTION

Gas ow
measurement

VARIOluxx
MGAluxx
MGAprime

USER MANUAL

9452EN-OPT

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Edition: 2018-08-14, V01

MRU

Content

1 Gas ow measurement ............................................................................................................... 3

1.1 Setting the parameter ..................................................................................................................... 3

1.1.1 Assign a measured value ......................................................................................................3

1.1.2 Set parameters ........................................................................................................................4

1.1.3 Store the measurement results ..........................................................................................5

1.1.4 Continuous data logging ......................................................................................................5

1.1.5 Export der Messung auf SD-Karte .....................................................................................5

2 Appendix ....................................................................................................................................... 6

2.1 Calculating the molar mass ........................................................................................................... 6

2.2 Calculating the gas density .......................................................................................................... 6

2.3 Calculating the current Flow velocity ........................................................................................6

2.4 Calculating the current volume ow .........................................................................................7

2 / 8 Version 01

OPTION Gas ow measurement

MRU

1 Gas ow measurement

This option allows the user to determine the gas velocity at a single poin
by means of a pitot tube (order separately). Based on the dierential
pressure between the ports of the pitot tube and the absolute pressure,
the gas velocity is calculated. The gas density as measured by the instru­ment is taken into account.

Assuming the measured gas velocity is represenative for the gas ow in a
duct, the ow rate is calculated as the product of the measured velocity
and the duct's cross section area which can be inserted accordingly.

1.1 Setting the parameter

Before measuring you must enter all parameters for the gas ow mea­surement in the menu Measure.

1.1.1 Assign a measured value

Gas ow measurement

f Double touch the value eld.

Ö A list with of all available measured values is displayed.

f Choose the wanted value and “replace” or "insert".

OPTION Gas ow measurement

3 / 8Version 01