Determining The Diluent Gas Flow Rate; Determining The Diluent Gas Flow Rate With The Optional O - Teledyne T700 Operation Manual

Teledyne API – Model T700 Dynamic Dilution Calibrator

4.2.2.2. Determining the Diluent Gas Flow Rate

4.2.2.3. Determining the Diluent Gas Flow Rate with the Optional O

Note
06873B DCN6388
To determine the required flow rate of the diluent gas use the following formula:
DIL =
flow
WHERE:
GAS = source gas flow rate (from Equation 6-1)
flow
Totalflow = total gas flow requirements of the system
DIL = required diluent gas flow
flow
EXAMPLE:

If the requirement of the system is 9.000 LPM,

The source gas flow rate is set at 3.00 LPM.

The required source gas flow rate would be:
If the optional O generator is installed and in use, Equation 6.2 will be slightly
3
different, since the O
3flow
T700's front panel. A typical value for O
DIL
flow
WHERE:
GAS = source gas flow rate (from Equation 6-1)
flow
Totalflow = total gas flow requirements of the system.
O = the flow rate set for the O
3 flow
about 0.105 LPM)
DIL = required diluent gas flow
flow
EXAMPLE:

If the requirement of the system are 9.000 LPM,

The source gas flow rate is set at 3.00 LPM.

The required source gas flow rate would be:
DIL
flow
DIL
flow
It is not recommended to set any flow rate to <10% or >100% of the full scale
rating of that associated mass flow controller.
WITH MULTIPLE CALIBRATIONS MASS FLOW CONTROLLERS INSTALLED:
• The combined flow potential of both mass flow controllers is available with the
following limits: The limits are <10% of the lowest rated MFC or >100% of the
combined full-scale ratings for both mass flow controllers.
• The T700 will automatically select the MFC with the lowest flow rate that can
accommodate the requested flow, thereby affording the most precise flow
control.
• If no single MFC can accommodate the requested flow rate, multiple mass flow
controllers are used.
Overview of Operating Modes and Basic Operation
Totalflow - GAS
flow
DIL = 9.0 LPM – 3.0 LPM
flow
DIL = 6.0 LPM
flow
is a constant value and is displayed as a TEST function on the
is 105 cm
3flow
= Totalflow - O
3
flow
3
= 9.0 LPM – 0.105 LPM
= 8.895 LPM
Generator Installed
3
3
/min.
generator; a constant value (typically
Equation 4-2
Equation 4-3
107