Aktek AT300 Manuel de l'utilisateur - Page 8

Parcourez en ligne ou téléchargez le pdf Manuel de l'utilisateur pour {nom_de_la_catégorie} Aktek AT300. Aktek AT300 16 pages. Ultrasonic thickness gauge

Imprimer la page

wear of the transducer, particularly in situations where the transducer is "scrubbed" along

the surface. Transducers should be inspected on a regular basis, for signs of uneven wear

of the wearface. If the wearface is worn on one side more than another, the sound beam

penetrating the test material may no longer be perpendicular to the material surface. In this

case, it will be difficult to exactly locate tiny irregularities in the material being measured, as

the focus of the sound beam no longer lies directly beneath the transducer.

4 Operation

4.1 Power On/Off

The instrument is turned on by pressing the

The gauge can be turned off by pressing the

special memory that retains all of its settings even when the power is off.

4.2 Probe Zero

key is used to "zero" the instrument in much the same way that a mechanical

The

micrometer is zeroed. If the gauge is not zeroed correctly, all the measurements that the

gauge makes may be in error by some fixed value. When the instrument is "zeroed", this

fixed error value is measured and automatically corrected for all subsequent measurements.

The instrument may be "zeroed " by performing the following procedure.:

1) Plug the transducer into the instrument. Make sure that the connectors are fully

engaged. Check that the wearface of the transducer is clean and free of any debris.

2) Press the

key to activate the probe zero mode.

3) Use the

key and the

sure to set the right probe model to the instrument. Otherwise, there will be erroneous.

4) Apply a single droplet of ultrasonic couplant to the face of the metal probe-disc.

5) Press the transducer against the probe disc, making sure that the transducer sits flat

against the surface.

6) Remove the transducer from the probe disc.

At this point, the instrument has successfully calculated its internal error factor, and will

compensate for this value in any subsequent measurements. When performing a "probe

zero", the instrument will always use the sound velocity value of the built-in probe-disc, even

if some other velocity value has been entered for making actual measurements. Though the

instrument will remember the last "probe zero" performed, it is generally a good idea to

perform a "probe zero" whenever the gauge is turned on, as well as any time a different

transducer is used. This will ensure that the instrument is always correctly zeroed.

Press

while in probe zero mode will stop current probe zero operation and return to

the measurement mode.

key.

key to scroll to the probe model currently being used. Be

www.aktek.com.tr

key while it is on. The tool has a