KERN & SOHN JE - Manual (Page 3)

Sauter GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: [email protected] Tel: +49-[0]7433- 9933-199
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
Instruction Manual
JE
JE-BA-e-1211 3
circumstances for any direct or indirect damages resulting
from the use of this instrument.
6. Cleaning procedures
There are two important cleaning procedures that should
be performed when using the Multi Tester:
Cleaning the sensor tip
Using the tester for the first time or if you haven’t used it
for a week or more, then the sensor tip should be cleaned.
By doing this, it will be assured that the tester shows
consistent and accurate readings.
How to clean it:
1. You will need a clean sheet of standard paper.
2. Ensure that the Multi Tester is switched off.
3. The sensor cap (which protects the tip), has to
be removed, see fig. 1
4. The tester has to be held with the sensor tip at a
right angle or perpendicular to the paper surface,
see fig. 2
5. 5. The sensor tip has to be gently rubbed in a
circular motion without retracting the sensor tip,
see fig.3
6. The same motion has to be performed a few
times to complete the cleaning process.
7. Then the tester is ready for use
Cleaning the gemstone:
Before the first test is performed, the gemstone has to be
clean and dry. This has to be done with a jewellery cloth or
a dry tissue. There is no need to elaborate cleaning
procedures using special cleaning fluids. If you do so, just
use an alcohol such as isopropyl or any other alcohol.
The slightest amount of grease will give false readings on
Moissanites.
Once cleaned, the stone needs to cool down for a minute
before testing, as the cleaning procedure can cause the
stone to be heated a little bit from your fingers and friction.
7. Testing Instructions
1. The sensor protective cover has to be removed and the
Multi Tester has to be switched on. It has to be waited until
the red waiting light turns off and the green light starts
shining. Now it is READY for use.
2. The Multi Tester has to be held in the way that the index
finger is touching one of the metal touch-plates and the
thumb is touching the other, ensured that there is a firm
contact.
The probe tip has to be held against the gemstone,
applying sufficient pressure for accurate readings. There
will be a reading result within 2 seconds. While testing,
there should be a steady and constant contact between
the sensor tip and the gemstone.
It may not be pressed so hard that the tip bends or breaks.
It there is applied too much force, this is not covered by
warranty!
The tip of the Multi Tester may not be touched. In the
pictures above it is shown how to hold the tester correctly
and how it is wrong to hold it.
Testing the stone two or three times in succession will
make it warm and a warm diamond will no longer register
“warm”. So it has to be waited for two or three minutes
between the tests to allow the stone to cool down.
The recommended ambient testing temperature is from
18°C to 27°C and the ideal humidity is 45% to 75%. The
temperature of the stone should be the same as the
ambient temperature. Exceeding the ambient temperature
of 27°C, the test result may be incorrect. Therefore, this
tester cannot be used outside in the cold and damp or in
direct sunlight at elevated temperatures.