114
6.
Connect the probe to the digital pyrometer (B/I
part number = PM20700) & power up the
pyrometer.
7.
Record the chamber temperature reading as
indicated by the pyrometer.
8.
Power off the NCAT.
9.
Power the NCAT back up while holding the #3
key in (Hidden Key #3 routine). When the unit
beeps, you may release the #3 key. The dis-
plays will read “CHBR CAL” in the percent loss
and elapsed time windows. The Hidden Key #3
routine will allow you to key in the chamber tem-
perature as measured by the pyrometer and
recorded in step 7.
10. Enter the new chamber temperature value
(recorded in step 7) followed by pressing the
enter key. The new offset value will be calculat-
ed and the entered temperature value will be
displayed. (The entered temperature is a tem-
porary set point. The original set point will
return upon exiting the hidden key #3 routine by
powering the unit off and back on.)
11. Power off the NCAT. (Green power switch)
12. Temperature calibration is now complete.
M
AINTENANCE
Summary of Contents for Thermolyne 859 Series
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