User guide

I-E67-84-1B February,2002 6-8
Invalid calibration values will generate the
text string BAD.CAL, and the calibration value
will not be accepted. If the values are
valid, the Efficiency (i.e., slope value shown
as a percentage of theoretical) will be shown.
Pressing the NEXT Smart Key displays the
Offset value. At this point, the user can
return to the Process Sensor Calibrate State
by pressing the NEXT Smart Key or to the
Measure Mode by pressing the Exit To MEASURE
Smart Key.
Note: If a Hold condition is present, the TB84PH
Advantage Series analyzer inquires if this
condition should be released.
For more information on sensor calibration
techniques and troubleshooting, refer to TP90-
2.
Temperature Calibrate State
The Temperature Calibrate State is a smart
calibration routine that allows for both
single- and dual-point calibration. By
calibrating the temperature at two points
which are at least 20 C apart, the TB84PH
o
Advantage Series analyzer automatically
adjusts the offset and/or slope. Since this
routine only uses the most recent calibration
data, calibrations can be conducted throughout
the sensor’s life to ensure accurate
measurement of the temperature sensing device.
If an incorrect calibration has been entered,
the Reset Calibrate State can restore the
calibration to factory settings. See Reset
Calibrate State in this section.
Note: The Reset Calibrate State will reset all
calibration values including the process sensor;
therefore, the process sensor will require
calibration after performing the Reset
Calibration procedure.