User manual

Using VisualDepth 19

3.2.2.2 Removing Internal Probe

To remove the internal probe from a cylinder (please refer to illustrations in the previous

section):

1. Loosen handle thumbscrew and rotate the handle wheel so that letter B is visible in the

position indicator hole.

2. Rotate the handle wheel to position E (the movement to B and then to E is used to take

up any slack in the positioning cable), the probe should be co-linear with the main shaft

now.

3. Pull up on the internal probe cable to take up any slack.

4. Carefully remove the probe from the cylinder. This is normally a close but loose fit. You

should not have to use ANY force to remove the probe. If you encounter resistance

please contact the factory.

3.2.2.3 Measuring with Internal Probe

Always keep one hand on the handle to stabilize probe position and to rock it back

and forth to make sure that both prongs are touching the cylinder surface. Keep the

other hand on the main shaft where it enters the cylinder crown.

Measurement procedure (flat section of the cylinder bottom):

1. Using standard inspection light, determine locations of pits that need to be measured.

2. Insert the internal probe into the cylinder (see sections above for insertion/removal

procedure).

3. Loosen handle thumbscrew and rotate the handle wheel so that letter B is visible in the

position indicator hole. Tighten the thumbscrew.

4. While looking into the tank and using the light on the internal probe, roughly position the

probe over the pit to be measured.

5. While looking at the video feed from the probe, position the probe gauge wire on a good

surface next to the pit. Press down on the handle until both probe prongs are touching the

cylinder surface. A good way to tell if both are touching is to rock/rotate probe left/right

and watch the video. There is a noticeable change when both prongs are touching the

surface. Please see the training video for more information.

6. Press the left foot switch or F4 to set zero while holding the probe in this position. The

Depth value should change to 0.000in.

7. While looking at the video feed from the probe, position the probe gauge wire into the

pit. Press down on the handle until both probe prongs are touching the cylinder surface

and press the right foot switch or F6 to record measurement while holding the probe in

this position.

8. You may continue measuring other pits by repeating step 7 as long as the cylinder

curvature is the same. If location is different from previous pits you can enter the new

location into the Recorded Measurements box. New measurements are always added to