21 Heat flow measurement
FLUXUS F60* 21.3 BTU mode
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UMFLUXUS_F60xV5-0EN, 2017-10-16
21.3.4 Defining the physical quantity and the unit of measurement
• Select the channel in the program branch Output Options on which the heat flow is
to be measured (the channel to which the temperature inputs have been assigned).
• Press ENTER.
• Select Thermal energy as the physical quantity.
• Press ENTER.
• Select the unit of measurement to be used for the heat flow.
• Press ENTER.
In the BTU mode, additional units of measurement are available for the heat flow and the
heat quantity. The unit of measurement displayed during the measurement will be adjust-
ed automatically:
21.3.5 Automatic toggling of the display in the lower line
In the BTU mode, it is possible to activate automatic toggling og the display in the lower
line. Press 3 times key during the measurement. The following physical quantities
will be displayed at an interval of 3 s:
• physical quantity selected in the program branch Output Options
• fluid temperature in supply line
• fluid temperature in return line
• difference between the fluid temperatures in the supply line and the return line
• Press 3 times key to deactivate the automatic toggling.
Output Options\for Channel A:
Options\Output Options\...\Physic. Quant.\Thermal energy
unit of measurement of the heat flow unit of measurement of the heat quantity
kBTU/min kBTU
kBTU/h kBTU
MBTU/h MBTU
kBTU/day MBTU
TON (TH) TH
TON (TD) TD
kTON (kTH) kTH
kTON (kTD) kTD
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