14
Z E R O
BarGraph Zero
This is a calibration function. This function and BarGraph FullScale function are used to
calibrate for linear process measurement. They affect the value displayed on the digital display
of the BarGraph. For nonlinear process measurement, use the Table function. See Section 3,
Calibration, for details.
There are two methods for linear calibration:
CAL
and
MOCAL
.
CAL
requires the use of a calibrated laboratory standard to generate the desired 0 input for
calibration. See Section 3, Calibration for a detailed Calibration Procedure using a laboratory
standard.
MOCAL
does not require a calibrated laboratory standard. Instead, the value of the input
signal that corresponds to the zero point may be entered directly using the front panel pushbuttons
and digital display. Note that this does not recalibrate the BarGraph: it merely defines what the
number that corresponds to zero-scale input will be for the existing calibration.
Press
ENTER/SAVE
Press
INCREASE
DECREASE
The display will show the saved state,
CAL
or
MOCAL
.
The display will toggle between
CAL
and
MOCAL
.
CAL
indicates that the user will use a laboratory standard to recalibrate
the zero point
(see Section 3 for the complete Calibration Procedure).
MOCAL
indicates that the user will not use a laboratory standard, but will
instead enter the input value corresponding to the zero point directly using the
front panel pushbuttons and digital display.
The rest of this description applies only to
M0CAL
:
Press
ENTER/SAVE
Press
INCREASE
DECREASE
Press
ENTER/SAVE
The display will show the current zero point input value.
INCREASE and DECREASE pushbuttons can be used to change the zero point
input value. Hold until the new zero point input value is reached.
The longer the pushbutton is held, the faster the display moves to the required
value.
Press ENTER/SAVE to store the new setting.
