Calculating The Float Height - Millipore M Air T Manual Del Usuario

M Air T Calibration Kit User Guide
Determine the flow rate:
Where:
Q = A × h² + B × h + C
Ref
For a float height of 30 mm, the volumetric flow rate under the mea-
surement conditions is calculated as follows:
Q = A × 30² + B × 30 + C
Ref
Q = (A × 30² + B × 30 + C ) × 0.9769
0

Calculating the Float Height

Below is an example of a typical calculation.
Your measurement conditions:
■ Atmospheric pressure: 1030 mbars
■ Temperature: 15°C
Determine the air density ratio:
For the method, see above.
Calculate the equivalent flow rate Q
pressure and temperature:
I.e. Q = Q
Ref 0
For a flow rate Q
Q = 139.5 × (1/0.9769)
Ref
= 142.8 L/min
× (1/0.9769)
Q = Q
Ref
of 139.5 L/min (example)
0
(from the flow rate)
at the standard Millipore
D
0
×
D
0
Ref
7