Sierra RedyCompact Meter, Инструкция по эксплуатации, Страница: 12 / 73

12
T
he temperature difference is related non-lineary to the mass flow, with very high repeatability. The
electronics will, based on the calibration, convert this temperature difference in a linear and
proportional indication of the mass flow of the gas.
1.15.
Real, Standardized and Normalized flow
The user-selectable engineering units of the RedyCompact
has been divided in two groups: “Real
and Normal” units and “Other units.”
This separation is not only there to find the unit you want to select quicker, it also separated the
“Normalized flow” from the “Standardized flow.”
Figure 3: Units Menu
The RedyCompact has basically two
reference conditions: One for “Real and Normal” units and
one for “Other units.”
The factory setting is as follows:
1) For all units that are used in "normal" (like ln/min), the reference conditions are always 0°C
and 1013.25 mbara. This cannot be adapted.
2)
For all the other units that are “standard” (like ls/min and sccm) and the l/min the reference
conditions has to be be defined when the unit is ordered.