KERN & SOHN TE 1250-0.1FN - Manual (Page 3)

Sauter GmbH
Tieringerstr. 11-15
D-72336 Balingen
E-Mail: [email protected] Tel: +49-[0]7433- 9976-174
Fax: +49-[0]7433-9976-285
Internet: www. sauter.eu
Instruction Manual
TE
TE-BA-e-1111 3
8. Trouble Shooting
8.1 The instrument should always be calibrated on the
uncoated base material to be measured instead of the
base plate included in the delivery. Then the
accuracy is more precise.
8.2 Sensors will eventually wear off. Life of the sensor will
depend on the number of measurements taken and
how abrasive the coating is.
9. Restore factory settings
9.1 In the following cases it is recommended to restore
factory settings:
A. The instrument does not measure any more.
B. Measurement accuracy is degraded caused by the
abraded sensor or affected by environmental
conditions.
C. After the replacement of a new sensor.
9.2 How to restore?
`F` setting and `N` setting are to be done. It can be
done one or both of them. The procedure is as follows:
9.2.1 On the display the symbol `F` or `NF` appears.
If `F` is shown on the display, you have to restore
factory settings for `F`, as described below.
If `NF` appears, you have to follow factory settings
for `NF`
9.2.2 The Power-on/ Power-off key 3-6 has to be pressed
until `CAL` appears on the display. This lasts about
5 seconds.
9.2.3 If now F:H or NF:H is shown on the display, the
sensor has to be lifted for more than 5 cm. Then the
Zero- key is to be pressed and the instrument returns
into measurement mode .With this, factory setting is
restored.
Comment: This procedure should always be done
within 6 seconds. Otherwise it will be automatically
cancelled and the restoration is invalid.
10. Notes
The linearization of the instrument, which is given by the
calibration, can be changed with the Ln- function.
Any adjustment of the value of Ln will seriously affect
the accuracy. This value should only be adjusted by
professional persons.
Generally said:
The bigger the value of Ln, the smaller the reading on the
display for the same (coating) thickness.
Only a small change on the value of Ln causes a big
change in the reading of the upper measurement range (at
500µm/ 20 mil).
The value of Ln is to adjust as follows:
Pressing the Power on/ Power off key.
It lasts about 11seconds from starting depressing this key.
This value can be changed by pressing the Plus- /Minus-
key after `Ln` appears on the display and the Power- on /
Power- off key is released. This value is stored and
afterwards the Zero- key is to be pressed.
A. The reading at low end is to be adjusted by pressing the
Plus-/ or the Minus- key.
B. The value of Ln is enlarged if reading at low end (e.g.
51µm) is o.k., but reading at high end (e.g.432µm) is too
large. In contrast with this the value of Ln is to be de-
creased if the reading at low end (e.g. 51µm) is o.k. but at
high end (e.g. 432µm) it is too small.
C. Procedures from A to B are to be repeated until the
reading for every calibration foil is satisfactory in its
accuracy.
11. Declaration of conformity