16 Advanced functions
16.7 Calculation channels FLUXUS G809
2020-06-25, UMFLUXUS_G809V2-2EN
140
Make sure that the physical quantity selected for the calculation channel can be calculated from the physical quantities of
the selected measuring channels, Tab. 16.1.
• Select the unit of measurement.
• Press ENTER.
It is possible to define 2 cut-off flows for each calculation channel. They are defined in the unit of measurement of the
physical quantity selected for the calculation channel.
All positive calculated values less than the limit are set to zero.
All negative calculated values that are greater than the limit are set to zero.
• Enter the damping factor. If the damping factor for the measuring channels A or B has already been entered in the pro-
gram branch, see section 9.2.2, enter zero.
• Press ENTER.
• Select yes to activate the data logger and no to deactivate it.
• Press ENTER.
Tab. 16.1: Physical quantities of the calculation channels
physical quantity of the
calculation channel
possible physical quantity of the first
measuring channel
possible physical quantity of the second
measuring channel
flow velocity volume flow
rate
mass flow
rate
flow velocity volume flow
rate
mass flow
rate
flow velocity
x x x x x x
volumetric flow rate
x x x x
mass flow rate
x x x x
Example
The difference of the volume flow rates of the channels A and B is to be calculated.
The physical quantity of the measuring channel A and B can be the volumetric flow rate or the mass flow, but not the
flow velocity. The physical quantities of the 2 measuring channels do not need to be identical (channel A = mass flow,
channel B = volumetric flow rate).
Output Options\for Channel Y\...\Mass in
Output Options\for Channel Y\...\+Cut-off Flow
Output Options\for Channel Y\...\-Cut-off Flow
Output Options\for Channel Y\...\Damping
Output Options\for Channel Y\...\Store Meas.Data
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