PD4-6624 & PD4-6628 Loop-Powered Flow Rate/Totalizers
Instruction Manual
66
Calibrating the Internal mA
Reference (
ICAL
)
The meter is factory calibrated prior to shipment to
display 0 to 100, which corresponds to the 4-20 mA
input. The calibration equipment is traceable to
NIST standards.
The use of calibrated signal sources is necessary to
calibrate the internal source of the
meter. The meter’s
internal source is what allows the user to scale the
meter without applying a signal.
Check calibration of the meter at least every 12
months.
Note:
Allow the meter to warm up for at least 15 minutes
before performing the internal source calibration procedure.
The
Internal Calibration
menu is part of the
Advanced
menu. Internal Calibration is performed as follows:
1. Press the
Menu
button to enter
Programming Mode
.
2. Press the
Up-Arrow
button
twice
and press
Enter
to access the
Advanced
menu.
3. Press the
Up-Arrow
button and press
Enter
to access the
System
menu.
4. Press the
Up-Arrow
button and press
Enter
to access the
ICAL
menu.
5. The meter displays
low
input current
message (
4.000 mA
). Apply a 4 mA signal
and press
Enter
. The display flashes for a
moment while the meter is accepting the low
input signal.
6.
After the display stops flashing, the display
moves to the
high
input calibration (
20.000 mA
).
Apply the high input signal and press
Enter
. The
display will flash again while the meter is
accepting the high input signal.
SYSTM
ICAL
ICAL
4.000 mA
ICAL
20.000 mA
Apply 4-mA
Signal
Apply 20-mA
Signal
ENTER
F3
MENU
ENTER
F3
ENTER
F3
