Precision Digital Corporation PROVU PD6402, Instruction Manual

Page: 23 / 47

P
RO
V
U
™ PD6402 High Voltage & mV to Current Meter
Instruction Manual
23
Setting the Input Calibration (
InCal
)
It is very important to read the following information,
before proceeding to program the meter:
•
The meter is factory calibrated prior to shipment
to read in amps and volts. The calibration
equipment is certified to NIST standards.
•
Use the Scale menu to scale the current and
voltage inputs. A calibrated signal source is not
needed to scale the meter.
•
Use the Calibrate menu to apply a signal from a
calibrator or other live signal source.
The
Program menu contains the Scale and the
Calibrate menus for channels A & V.
The process inputs 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
under the menu selection prior to scaling and
calibration of the meter.
See Multi-Point Linearization
(
Linear
) on page 37 for details .
Multi-Point Linearization (
Linear
)
The process inputs may be calibrated or scaled to any
display value within the range of the meter. The meter
is set up at the factory for 2-point linear calibration.
Up to 32 linearization points may be selected. See
Multi-Point Linearization (
Linear
) on page 37 for
details.
Scaling the Meter without a Signal
Source
The voltage and mV inputs can be scaled to display
the process variables in engineering units.
A signal source is not needed to scale the meter;
simply program the inputs and corresponding display
values as the following example illustrates.
Due to limitations of the display, the mV input should
be entered in terms of Volts. That is 100 mV should
be entered as 0.100.
Scaling the Meter for Channel A
(
SCal-A
)
Note: Inputs for the above example are:
Input 1: 0.000; Display 1: 0.0 A
Input 2: 0.100; Display 2: 400.0 A
To achieve a display of 0-400 A, when using
400 A / 100 mV shunt, scale the PD6402 without
applying an input, Input 2 should be 0.100 and
Display 2 should be 400.0
Scaling the Meter for Channel V
(
SCal-V
)
Note: Inputs for the above example are:
Input 1: 0.0; Display 1: 0.0 V
Input 2: 300.0; Display 2: 300.0 V
For instructions on how to program numeric
values see Setting Numeric Values , page 22 .