Internal Source Calibration (Ical) - FlowLine DataView LI55 Instruction Manual

DataView™ LI55 Level Controller
Internal Source Calibration ( ICAL )
The meter is factory calibrated prior to shipment to read in milliamps and volts
depending on the input selection. The calibration equipment is certified 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. Each input must be
recalibrated separately.
Notes:
The Internal calibration menu is part of the Advanced Features menu.
1. Press and hold the Menu button for 5 seconds to enter the full main
menu. From Setup, press and hold the Menu button for 3 seconds to
access the advanced features of the meter.
2. Press the Up button to scroll to the Internal calibration menu (ICAL)
and press Enter.
3. The meter displays either current calibration (C CAL) or voltage
calibration (v CAL), according to the input setup. Press Enter to start
the calibration process.
Example of Internal Calibration for current input:
4. The meter displays low input current message (C lo). Apply the low
input signal and press Enter. The display flashes for a moment while
the meter is accepting the low input signal.
5. After the display stops flashing, a number is displayed with the leftmost
digit brighter than the rest. The bright digit is the active digit that can be
changed by pressing the Up button. Press the Right button to move to
the next digit.
6. Set the display value to correspond to the input signal being calibrated,
typically 4.000 mA.
86
1. If meter is in operation and it is intended to accept
only one input type (e.g. 4-20 mA), recalibration of
other input is not necessary.
2. Allow the meter to warm up for at least 15 minutes
before performing the internal source calibration
procedure.
Instruction Manual
MN301033 Rev B1