25
43. Power down the NCAT with the green power
switch and power back on again to exit balance
adjustment mode.
OHAUS Balance Calibration
OHAUS balance calibration should be performed to
ensure accurate weighing. Calibration is performed with
the calibration plate (provided by B/I) and a set of certified
weights (8000 grams).
You need to have the calibration plate and certified
N.I.S.T. weights to perform the calibration.
NOTE: Span calibration works best at 4000 grams given
the application with the NCAT.
The OHAUS balance also has linearity and user calibra-
tion modes. However, due to the nature of the applica-
tion, calibration of the balance in either of these two
modes is not necessary.
1.
Power down the NCAT, allowing the unit to cool
to ambient chamber temperature.
2.
Open the furnace door and remove the hearth
plate (setting on top of the four ceramic support
posts. (Door remains open until calibration is
complete.)
3.
Place the calibration plate (P/N = PT859X7) on
top of the four ceramic support posts, ensuring
the plate is centered.
4.
Press and hold the #4 key on the keypad in.
While the #4 key is held, turn the green power
switch on as to power up the NCAT. When the
unit beeps, you may release the #4 key.
5.
Access the balance control buttons through the
pin holes located on the front of the control
panel (Reference the sketch depicting the bal-
ance control port holes.)
6.
Press the ON button. “Menu” is displayed fol-
lowed automatically by “Cal”.
OHAUS B
ALANCE
Summary of Contents for Thermolyne 859 Series
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