Hioki 8841 - 8940 F;V Unit

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2.4 Connection of the Input Unit
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2.4.4 8940 F/V UNIT
DANGER
To avoid electrical accidents, make sure that the MEMORY
HiCORDER and the equipment being measured are powered off
before making connections. Do not make connections with the
power turned on.
When using the 9318/9319 CONVERSION CABLE, there is no
isolation between GND the MEMORY HiCORDER and GND of the
clamp on sensor/probe. Exercise extreme care in connection to
avoid possible damage to the equipment or personal injury.
When connecting 8940 F/V UNIT to 3273, and conductors being
measured carry in excess of the safe voltage level (SELV-E) and not
more than 300 V, to prevent short circuits and electric shock while
the core section is open, make sure that conductors to be measured
are insulated with material conforming to (1) Measurement Category
l, (2) Double Insulation (Reinforced insulation) Requirements for
Working Voltage of 300 V, and (3) Pollution Degree 2. For safeties
sake, never use this sensor on bare conductors. The core and
shield case are not insulated.
When connecting 8940 F/V UNIT to 3273, do not damage insulation
sheathing on testing device.
Refer to the following standards regarding the meanings of
underlined terms. IEC 61010-1, IEC 61010-2-031, IEC 61010-2-032
WARNING
When using the clamp-on sensor or clamp-on probe, be sure to use
the optional 9318 or 9319 CONVERSION CABLE.
CAUTION
When disconnecting the BNC connector, be sure to release the lock before
pulling off the connector. Forcibly pulling the connector without releasing
the lock, or pulling on the cable, can damage the connector.
Groove of the BNC
Connector guide
Connection cable connection (Frequency, count, pulse duty ratio and voltage measurement)
Use the optional 9198 CONNECTION CORD for
connection to the F/V UNIT.
1. Align the BNC connector with the guide groove
of the 8841 input connector, and turn clockwise
while pressing in to lock the connector.
2. To remove from the unit, turn the BNC
connector counterclockwise to release the lock,
then pull it.