Dynasonics TFXP Series Transit Time Ultrasonic Flow Meter - Manual (Page 90)

Rev. 5/09
-4.12- TFXP
Setting Zero and Calibration
ULTRALINK™ contains a powerful multi-point calibration routine
that can be used to calibrate the TFX flow meter to a primary
measuring standard in a particular installation. To initialize the three-
step calibration routine, click on the Calibration button located on
the top of the ULTRALINK™ Data Screen. The display shown in
Figure 4.7 will appear. The first step (Page 1 of 3) in the calibration
process is the selection of the engineering units with which the
calibration will be performed. Select the units and click the Next
button at the bottom of the window.
The second screen (Page 2 of 3) Figure 4.8 on page 4.13,
establishes a baseline zero flow rate measurement for the
instrument. To zero the flow meter, establish zero flow in the pipe
(turn off all pumps and close a dead-heading valve). Wait until the
delta-time interval shown in Figure 4.8 is stable (and typically very
close to zero). Click the Set button. Click the Next button when
prompted, then click the Finish button on the Calibration Screen.
NOTE: If the Set button was clicked, do not proceed with Flow
Rate Calibration before clicking the Finish button to save the Zero
setting.
Important!
Figure 4.7 — Calibration (Page 1 of 3)
PART 4 - SOFTWARE UTILITIES