Flow Calibration - Thermo Scientific TVA2020 Instruction Manual

Calibration

Flow Calibration

Flow Calibration
4-18 TVA2020 Instruction Manual
FID
FID: 44750
-ACCEPTED-
When the ACCEPTED message disappears and the CALIBRATION
menu appears, the SPAN reference value is stored. This value is stored in
non-volatile memory until the next calibration is performed. The date and
time of this calibration are stored and can be accessed through the INFO
menu.
4. If more than one reference span gas concentration has been defined, the
span calibration display returns. Move to the next concentration point
(Up/Dn keys) and repeat steps 2-3 above until each reference gas
concentration point has been calibrated.
Use the following procedure to perform a flow calibration.
1. Confirm that the instrument passes the
to performing this calibration. A new water trap filter and a new or
clean sintered metal filter should be installed prior to performing this
calibration.
2. From the SETUP MENU, choose 1=Calib > 5=Flow.
3. Establish the 1 ±.01 LPM flow at the probe inlet.
a. Typical values are 50-60% power with 28K-30K counts.
4. Press Enter=Accept to save the Flow 1 values.
5. Attach one of the red flow restrictors between the probe inlet and the
flow meter.
6. Press "2" for the second flow calibration point.
7. Adjust the pump power with the up and down arrows for a reading of 1
±.01 LPM at the probe inlet.
PID/FID
PID: 4000
FID: 44750
-ACCEPTED-
Leak Check on page
Thermo Fisher Scientific
7-16 prior