Ametek DDMC, Инструкция по эксплуатации

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DDMC Analog Input Process Meter / Controller
Instruction Manual
24
Programming the Meter (
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 Scale (
SCALE
) and
the Calibrate (
Cal
) menus.
Process inputs may be scaled or calibrated to any
display within the range of the meter.
The DDMC is a single input meter with dual-scale
capability.
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 39
for details.
If the dual-scale level feature is selected in the
Setup
menu, the
Scale 1
and
Scale 2
menus are enabled for
PV1 & PV2 respectively.
The process input may be calibrated or scaled to any
display value within the range of the meter.
Program Menu for Single Scale
Process
Program Menu for Dual-Scale Level
Applications
Additional parameters, not needed for most
applications, are programmed in the Advanced
Features
menu. See
Advanced Features Menu
on
page 37 .
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
for PV1 and up to 8 linearization points may be
selected for PV2. See Multi-Point Linearization
(
Linear
)
menu on page 39 for details
.
Scaling the Meter (
SCALE
)
The process input (4-20 mA,
±
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.
Dual-Scale for Level Applications
The analog input can be displayed in two different
scales, by enabling the dual-scale feature (
d-SCAL
) in
the
Setup - Input
menu. See
Setting the Input Signal
(
Input
) on page 22 .
To enable the dual-scale feature for some level
applications you must select
d-SCAL
in the Input
selection menu.
Scaling the Input for PV1 (
SCAL 1
)
Scaling the Input for PV2 (
SCAL 2
)