Kobold NWS, Operating Instructions Manual

Page: 11 / 25

NWS
NWS K06/0214 Page 11
9.1.3 Calibration mode
Each appliance is adjusted by the
factory to record fluids with density 1,0
kg/l (water). It is not usually necessary
to alter this pre-adjustment. In extreme
situations, however, such as with very
light fluids at high temperatures or
highly viscous fluids, which produce a
significantly extended reaction time from
dry to wet, it can be advantageous to
alter the pre-adjustment. In order to
attain the calibration mode the Setup
button must be activated and held, then
the supply voltage must be switched on.
After approximately 1 second the LED
goes on, after 2 seconds the LED goes
out, then let go of the Setup button – the
appliance stays now in the main menu
of the calibration mode.
There is a choice of options in the main menu - Switchpoint Calibration,
Hysteresis Level and LED Mode. The LED indicates the selected option:

Switchpoint Calibration: LED flashes briefly 1x, then LED 2 seconds off.

Hysteresis Level: LED flashes briefly 2x, then LED 2 seconds off.

LED Mode: LED flashes briefly 3x, then LED 2 seconds off.
The option points are repeated in an infinite loop.
In order to get access to an option the Setup button must be activated briefly
when the LED has signalled the requested option point.
Switchpoint Calibration:
The "Switchpoint Calibration Mode" is signalled by: LED 1x briefly off, then LED 2
seconds on.
Dip the tuning fork as far as the required switchpoint (1/2 – 2/3 of the fork length)
in the medium and activate the Setup button. The calibration is made.
A successful calibration is signalled by the LED flashing quickly three times.
Hysteresis and LED Mode are set back to default! After calibration the switch
back to the main menu takes place.
Hysteresis Level:
The "Hysteresis Level Mode" is signalled by: LED 2x briefly off, then LED 2
seconds on. Briefly activate the Setup button to get to the submenu.

Hysteresis Level 1(approx. 1-1.5mm): LED flashes briefly 1x, then LED 2
seconds off.

Hysteresis Level 2 (approx. 3-4.5mm, Standard): LED flashes briefly 2x, then
LED 2 seconds off.

Hysteresis Level 3 (approx. 5-7.5mm): LED flashes briefly 3x, then LED 2
seconds off.