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KEMKRAFT
* CALIBRATION PROCEDURE *
NOTE: Place the cal stand on a surface that is very solid and stable. The angle transducer
inside the tool is very sensitive and any movement at all will cause the numbers being
displayed to fluctuate. During the calibration procedure the cal stand should not be
allowed to tip or move, on the table, because the cal stand might become unlevel and
reduce calibration accuracy. It would be advisable to attach the cal stand to the table (eg.
Destaco clamps) to reduce the possibility for errors.
A) Install the desired Clear Vision steering wheel set tool onto a calibration stand which can
be adjusted from +60 degrees to -60 degrees in 15 degree increments. The tool that is
placed into the cal stand during the cal mode will be the tool that is calibrated.
INSURE THAT THE BACK OF THE ROLLERS, ON THE TOOL, ARE PRESSING AGAINST
THE CALIBRATION STAND ROLLER SUPPORT AT ALL ANGLES. IF TOOL IS NOT
PARALLEL TO THE CALIBRATION STAND AT ALL TIMES, CALIBRATION VALUES WILL
NOT BE ACCURATE.
B) There are 2 LED's on the front panel, one labeled RUN MODE, and one labeled CAL
MODE. The green RUN MODE LED will be lit when the unit is in the standard run mode.
When the CALIBRATION push-button switch on the front panel of the KEI-850 Digital
Readout box is pressed, the green RUN LED will turn off and the red CAL MODE LED will
turn on. The CAL MODE LED will stay lit until you go back to the RUN MODE.
C) Press the CALIBRATION push button switch once and the display will read;
If a calibration procedure is to be performed, press the CAL switch a second time and the
program will go into the cal procedure. If the cal procedure is not desired, a countdown
timer will countdown for 15 seconds and the program will go back to the RUN MODE. The
red LED should turn off and the green LED should turn back on.
D) If calibration is desired, press the CALIBRATION switch again and the display will read;
xxxx: is the raw A to D (analog to digital) value displayed in Hexadecimal. It will change as
the tool is tilted. (0000 = most negative angle, 8000 ~ zero degrees, FFFF = most positive
angle). At -60 degrees, the hex value should be slightly greater than 0000, at 0 degrees
near 8000, and at +60 degrees slightly less than FFFF. If at -60 degrees, the hex values is
= 0000, or at +60 degrees = FFFF, check the hex value at 0 degrees. First double check
that the cal stand is level and set to zero degrees, and that the meter is displaying a value
near 8000 hex. If the value is not near 8000 Hex, adjust the transducer, inside the box on
the tool, by loosening the 2 mounting screws and tightening it back down so that it reads
as near 8000 hex as possible. If the display still reads FFFF at -60 degrees or 0000 at +60
degrees, the amplifier gain is to high and needs reducing. If this is the case, send the unit
back to Kemkraft for modification. The Hex value is displayed to observe when the number
settles out after the cal stand has been moved to a new position.
Tx: means it will display T1 if Tool 1 is in the cal stand or T2 if Tool 2 is in the cal stand.
CAL STND -60 deg, PRESS SW: means place the cal stand in the -60 degree position and
press the CALIBRATE switch when the Hex number has settled out. (It should settle out in
a second or two).
96-033.doc
47650 Clipper Dr. Plymouth Twp., MICHIGAN 48170 (734)-414-6500
MODEL KEI-850 READOUT BOX
Press CAL switch
again to calibrate
xxxx Tx,CAL STND
-60 deg, PRESS SW
3
ENGINEERING, INC.
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