Precision Digital Corporation PROVU PD6262-7R4, Инструкция по эксплуатации

Страница: 29 / 54

P
RO
V
U
™ PD6262 Dual Analog Input Rate/Totalizer
Instruction Manual
29
Calibrating the Meter with External
Source
Note: To scale the meter without a signal source,
refer to Scaling the Meter without a Signal Source
(
SCAL-A
,
SCAL-B
) on page 28.
The meter can be calibrated to display the process
variables in engineering units by applying the
appropriate input signal and following the calibration
procedure.
The use of a calibrated signal source is strongly
recommended to calibrate the meter.
Warm up the meter for at least 15 minutes before
performing calibration to ensure specified
accuracy.
Calibrating the Meter for Channel
A (
CAL-A
)
Calibrating the Meter for Channel
B (
CAL-B
)
Total and Grand Total Setup
The time base and total conversion factor, and grand
total conversion factor for input channels A and B are
located in the
Totalizer Setup menu.
The time base is based on the rate of flow. Total &
grand total conversion factors for channel A and B are
programmed independently. The total and grand total
have their own independent settings. This means that
one can be displaying the value in gallons while the
other displays in million gallons, liters, m
3
, etc.
Total & Grand Total Reset
Total reset menus are located in the Program menu.
The totals can be programmed for manual or
automatic reset. In the automatic reset mode, a
programmable time delay is available to reset the total
or grand total after the assigned preset is reached.
Password Protected and Non-
Resettable Total
The total and grand total can be password-protected
to prevent unauthorized resets. The grand total can
be programmed as a non-resettable total, see
Total
Reset Password & Non-Resettable Total on page 39
for details.