Cygnus 4+ Operating Manual
M5-CYG4P-M-01_Iss5.doc
46
4.
If the Probe Zero fails a message
will be displayed.
•
Check the probe has not
been unplugged or the
cable is damaged/faulty.
•
The probe face must be
clean and in the air.
•
Are you using a non-
Cygnus probe?
You must un-plug the probe,
then plug it back in to re-try the
Probe Zero process.
Setting the Velocity of Sound
The gauge uses the Velocity of Sound value to calculate the
material thickness value. It is therefore important the velocity
value is set correctly for the material being measured.
If you perform a Calibration the Velocity of Sound will be set
for you during the calibration – so you don’t need to adjust it
afterwards.
You can manually set the velocity of sound value if required;
normally you would do this if;
•
You can’t perform a calibration
•
You want to use the same velocity setting as last time
•
You want to use a velocity from a material list
A list of velocity of sound values for common material can be
found on page 134.
