Operation; Periodic Maintenance - YOKOGAWA FLXA402 User Manual

3.

Operation

When all wiring is completed, turn on the power to the instrument. Make sure that the LCD
screen turns on, and then wait for the Home display appears. If configurations are not proper, an
error indicator may be displayed, or the measurement values displayed may be incorrect. Check
the initial settings and change them to suit your purpose.
For details, refer to the following User's Manual.
Contents
FLXA402 4-Wire Converter
Operation of Converter
FLXA402 4-Wire Converter
Operation of pH/ORP
FLXA402 4-Wire Converter
Operation of SC
FLXA402 4-Wire Converter
Operation of ISC
FLXA402 4-Wire Converter
Operation of DO
FLXA402 4-Wire Converter
HART communication
FLXA402 4-Wire Converter
Modbus communication
Change language
l
The default language setting for the FLXA402 is English. To select a different language other
than English, refer to the User's Manual IM 12A01F01-03EN.
Operation
l
According to the sensor to be used, refer to appropriate user's manual about operation.
4. Maintenance

Periodic maintenance

n
The FLXA402 requires very little periodic maintenance, except to make sure the front window
is kept clean in order to permit a clear view of the display and allow proper operation of the
touchscreen. If the window becomes soiled, clean it using a soft damp cloth or soft tissue.
To deal with more stubborn stains, a neutral detergent may be used.
When you must open the front cover and/or glands, make sure that the seals are clean and
correctly fitted when the unit is re-assembled in order to maintain the housing's weatherproof
integrity against water and water vapor.
The pH measurement uses high impedance sensors and may otherwise be prone to problems
caused by exposure of the circuitry to condensation
CAUTION
Never use harsh chemicals or solvents. In the event that the window does become heavily
stained or scratched, refer to the parts list for replacement part numbers.
Battery
l
The FLXA402 contains a lithium cell (battery) to support the clock function when the power
is switched off. The cell has an expected working life of 10 years. Should this cell need to be
replaced, contact your nearest Yokogawa service center.
Fuse
l
There is a circuit board mounted fuse protecting the instrument. If a fuse blows soon after the
change, contact your nearest Yokogawa service center.
<Start-up and Safety Precautions>
Document number
IM 12A01F01-03EN
IM 12A01F02-01EN
IM 12A01F03-01EN
IM 12A01F04-01EN
IM 12A01F05-01EN
TI 12A01F01-61EN
TI 12A01F01-62EN
IM 12A01F02-01EN 2nd Edition : Apr. 19, 2019-00
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