□ g/min
□ g/h
□ kg/min
□ kg/h
□ lb/min
□ lb/h
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”
> Flow
> Totalizer
> Real and
Norm
> Other units
> Real and
Norm
> Other units
If the unit name is “normal” than we select 0°C and 101325 pa as reference conditions.
If it is anything else the customer can set the reference conditions. (Factory default is 20°C). Real mass
units (f.i. kg) have no reference settings.
Figure 3: Units menu
The red-y compact has basically 2 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.
The reference value for all units that are not “Normal” or “Real” it has to be defined
with the purchase order. It cannot be changed after the units has been delivered.
On the sticker of the red-y compact we will mention a reference condition. This
reference condition is for the “Standard” units only. The “normal” units will always be
0°C and 1013.25 mbara.
In future version of the firmware the reference conditions will be adjustable in the
menu.
Gas flow in general can be expressed in one of the following:
Volumetric flow: (f.i. l/min). This theoretically cannot be measured by the red-y
compact because it is volume. The compact measures mass flow. However,
due to regional requirements we still have it as a flow unit that is selectable.
Units shown as volume (l/min) refer to the customer defined reference
conditions (Same as “standard”)
