ProtEX-MAX PD8-6210 Explosion-Proof Analog Input Batch Controller
Instruction Manual
39
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 controller.
Press the Up arrow to move the decimal point one
place to the left. Press the Right arrow to move the
decimal point one place to the right.
Programming the Batch Controller
(
prog
)
The controller may either be scaled (
SCALE
) without
applying an input or calibrated (
Cal
) by applying an
input. The controller 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. Input Calibration
a. Scale without a signal source
b. Calibrate with a signal source
2. Total time base & conversion factor
3. Batch mode
a. Manual batch control
b. Automatic batch control
4. Grand total time base & conversion factor
5. Grand total reset mode
a. Manual reset
b. Automatic reset with time delay
The process inputs may be calibrated or scaled to any
display value within the range of the controller.
Note:
The Scale and Calibrate functions are exclusive of
each other. The controller 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
controller. See
) menu on
page
for details.
Additional parameters, not needed for most
applications, are programmed in the
Advanced
Features
menu; see
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 controller 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
controller. See
for details.
Scaling the Controller (
SCALE
)
The 4-20 mA and the
10 VDC inputs can be scaled
to display the process variable in engineering units.
A signal source is not needed to scale the controller;
simply program the inputs and corresponding display
values.
For instructions on how to program numeric values
, page
•
Reverse Scaling
The controller 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.
