Fuji Electric FCX-AII-V5 series, Инструкция по эксплуатации и сервисное обслуживание

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TN5FCXA2V5h-E 103
Digital voltmeter
To (–)
terminal
To (+)
terminal
Standard resistor
(1
7
or 10
7
)
Maintenance
Check of arrester :
Measure output current from the transmitter on the current loop 4/20mA and CK+/- of the
transmitter.
If the measured two output current are the same, the arrester is normal.
In case the measured values have a difference of 0.1% (0.016mA) or more, the arrester
is not functioning. In the above case, the arrester unit (terminal unit) should be replaced
with a new one.
Limitation of insulation resistance and dielectric strength test
An insulation resistance and dielectric strength test should be avoided as a rule, since it
may damage the arrester.
Output measurement at check terminals (CK+ and CK-)
Output measurement on the current loop (4/20 mA)
* Disconnect the wire from the "-" terminal and connect the measurement device a shown
below.
Standard resistance
(1
7 or 10 7 )
To (+) side wiring
To (+) terminal
To (–) terminal
To (–) side wiring
DC power
supply
Digital voltmeter