PD8-6200 Explosion-Proof Analog Input Flow Rate/Totalizer
Instruction Manual
38
Setting the Decimal Point (
dEc.pt
)
The decimal point may be set with up to five decimal
places or with no decimal point at all. The rate, total,
and grand total decimal points are independent.
The decimal point selection should be made prior to
scaling, calibrating or programming the meter.
Pressing the Right arrow moves the decimal point one
place to the right until no decimal point is displayed
then it moves to the leftmost position. Pressing the Up
arrow moves the decimal point one place to the left.
Programming the Rate/Totalizer
(
prog
)
The meter may either be scaled (
SCALE
) without
applying an input or calibrated (
Cal
) by applying an
input. The meter comes factory calibrated to NIST
standards, so for initial setup, it is recommended to
use the (
SCALE
) function.
The
Program
menu contains the following menus:
1. Scale without a signal source
2. Calibrate with a calibrated signal source
3. Total time base & conversion factor
4. Grand total time base & conversion factor
5. Total reset mode for total & grand total
Process inputs may be scaled or calibrated to any
display within the range of the meter.
The process input may be calibrated or scaled to any
display value within the range of the meter.
Note:
The
Scale
and
Calibrate
functions are exclusive of
each other. The meter uses the last function programmed.
Only one of these methods can be employed at a time. The
Scale and Calibrate functions can use up to 32 points
(default is 2). The number of points should be set in the
Advanced menu prior to scaling and calibration of the
meter. See Multi-Point Linearization (Linear) menu on page
53 for details.
Additional parameters, not needed for most
applications, are programmed in the
Advanced Features
menu; see
on page
Multi-Point Calibration & Scaling
The meter is set up at the factory for 2-point linear
calibration. The number of points for multi-point
calibration/scaling is set up in the
Advanced
Features
menu. Up to 32 linearization points may be selected.
See
) menu on page
for details.
Input Calibration Method (
InCAL
)
There are two methods of calibrating (or scaling) the
display to show the correct engineering units.
•
Use the
Scale
menu to enter the scaling without a
signal source.
•
Use the
Calibrate
menu to apply a signal from a
signal source.
Note:
The Scale and Calibrate functions are exclusive of
each other. The meter uses the last function programmed.
Only one of these methods can be employed at a time. The
Scale and Calibrate functions can use up to 32 points
(default is 2). The number of points should be set in the
Advanced menu prior to scaling and calibration of the meter.
See Multi-Point Linearization (
details.
Scaling the Meter (
SCALE
)
The process inputs (4-20 mA and
10 VDC) can be
scaled to display the process variable in engineering
units.
A signal source is not needed to scale the meter;
simply program the inputs and corresponding display
values.
•
Reverse Scaling
The meter can be scaled so that 4 mA represents
the high end of the process value range being
measured by the transmitter and 20 mA
represents the low end of the process value range.