Bypass Flow Cal (11.67-Lpm) - Teledyne T640 User Manual

4.1.3.

BYPASS FLOW CAL (11.67-LPM)

08354A DCN7303
IMPORTANT: Perform Pressure Cal first (Section 4.1.1).
1. Connect theNIST-traceable flow transfer standard device to the Bypass Tube
that was disconnected in the Sample Flow Cal procedure above. Wait at
least one minute for the flow to re-stabilize.
2. With the T640 running, go to the Calibration>Bypass Flow Cal menu.
3. Compare the "Measured Flow" in this screen to the Flow Standard.
4. If these values differ by more than 5%, then press the value button in the
Actual Flow field, enter the value measured by the Flow Standard, and press
the Calibrate button on this screen.
The Measured Flow value should change to closely match the Actual Flow within
a few seconds.
Teledyne API Model T640 PM Mass Monitor 51