Ladder Step Wedges; Two Point Calibration Procedure - Cygnus 1 Ex Manual

When performing a two-point calibration both sample thicknesses should be made
from the same material. The temperature of the sample material should be the
close to the temperature of the material to be measured.
The gauge will automatically compensate for v-path error in addition to either
single- or two-point calibrations.

Ladder Step Wedges

Typically, a Ladder Step Wedge is used to
calibrate the probe and gauge for Steel.
The ladder step wedge has 4 or 5 different
thicknesses typically ranging from 2.5 to
20.0mm (0.1 to 0.5"). You would typically
choose to calibrate using the 2.5mm and
20mm thicknesses.

Two Point Calibration Procedure

1. Assuming you have a step wedge of
known thicknesses
2. Wipe clean the step wedge then
add some fresh couplant to the step
wedge.
3. Place the Probe on the sample and
verify the gauge can get a thickness
value.
Cygnus 1 Ex Operating Manual
Page 44 of 91
Ladder Step Wedges
25.00
2.50