=
To measure tubular object, change the direction
of the probe for 90°, look for the minimum vaue
=
For rough surface, don’t press the probe when
turning it or slipping it, to protect the probe.
=
When battery voltage is too low to work, a battery
symbol appears on the screen. It reminds you to
change new batteries
=
When you do not use the meter for a long time,
please take out batteries to avoid damaging the
meter by electrolyte.
=
Don’t store the meter in a high temperature or wet
place.
=
After power off, to turn power on again, wait for two
seconds.
=
Rough surface may affect test, Burnish it by sand
paper, and then measure.
=
When the surface has thick paint, scrape it off
and then measure.
=
Coupling paste is necessary for test, it can
eject air out off the gap between the probe and
the object to get ultrasonic wave to pass. For
rough surface, more viscous coupling paste
must be used, such as lubricating oil.
05
06
“Adjust”
can release. You can see the bars
disappear gradually. Finally “4.0mm” displays, the
meter will be calibrated.
7) Notices
=
When measuring thickness under 2.5mm,
sometimes an error named as “double refraction”
may occur. Another error is named as “pulse
envelope or cycle jump”. They bring on a bigger
result than actual thickness. So when measuring
thin object, should do it repeatedly to look for the
least value. If necessary, make a thin block to
compare measuring result.
=
The ultrasonic wave velocity listed in Table (1) is
for reference. Because the component of your
material may not be identical with that listed in
Table (1), user had better make sample block to test
the wave velocity in it.
=
It is not a good ultrasonic wave conductor to the
poriferous material, or uncompacted material, it
can not be measured by the meter. Casting has
large crystals, if it surface is rough; it is difficult
for user to test thickness by the meter.
6) Calibrating the meter
=
When changing a new probe, or the probe is
abrased or the meter is used for a long time, you
need to calibrate the meter by yourself, the method
is as follows: Power on the meter, smear a little of
coupling paste on the surface of the metal block
built -in the shell of the meter. Put the probe on and
press it, when coupling symbol appears, press
button
“Adjust”
for two seconds, four bars appear
on the screen. Keep pressing the probe button
