PD6800 Loop-Powered Process Meter Instruction Manual
34
Internal Calibration (
ICAL
)
There is
no need to recalibrate
the meter for milliamps when first
received from the factory.
The meter is
factory calibrated
for milliamps prior to shipment.
The calibration equipment is certified to NIST standards.
The internal calibration allows the user to scale the meter without applying a signal.
The use of a calibrated signal source is necessary to perform the internal calibration
of the meter. Check calibration of the meter at least every 12 months.
Notes:
The signal source must have a full-scale accuracy of 0.002% or
better between 4 and 20 mA in order to maintain the specified
accuracy of the meter.
Allow the meter to warm up for at least 15 minutes before
performing the internal calibration procedure.
The
Internal
calibration
menu is part of the
Advanced
features menu.
Press and hold the
MENU
button for 5 seconds to enter the
Advanced
features
menu. Press the
Up
arrow button to scroll to the
Internal Calibration
menu (
ICAL
) and
press
Enter
.
The meter displays
4.000
mA. Apply a 4.000 mA signal and press
Enter
. The display
flashes for a moment while the meter is accepting the signal.
After the signal is accepted, the meter displays
20.000
mA. Apply a 20.000 mA signal
and press
Enter
. The display flashes for a moment while the meter is accepting the
signal.
Error Message (
SPAN
ERROR
)
An error message indicates that the calibration process was not successful. After the
error message is displayed, the meter will revert to input 2 calibration settings. The
error message might be caused by inadvertently leaving the signal at the previous
level or not maintaining the minimum span. Press the Menu button to cancel the
current calibration process if necessary.
Information (
INFO
)
The
Internal
calibration
menu is part of the
Advanced
features menu. It shows
software identification number and version number. To determine the software
version of a meter:
Go to the
Information
menu (
INFO
) and press
Enter
button.
Continue pressing
Enter
to scroll through the software release number and software
version.
Following the information display, the meter will exit the
Advanced
features menu and
return to run mode.
