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2.4 Connection of the Input Unit
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2.4.2 8937 VOLTAGE/TEMP UNIT
WARNING
Never connect the cable to the unit while the cable is already
connected to the measurement object. Otherwise there is a risk of
electric shock.
When an uninsulated thermocouple is used to measure temperature
at a point carrying electric potential, take care not to touch the
terminals and connector screws. Otherwise there is a risk of electric
shock.
Between voltage and temperature inputs and unit is insulated.
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.
A common GND is used for voltage and temperature input on all
channels. Never input voltage and temperature simultaneously, since
doing so could result in damage to the sample being tested.
Outer
insulation
(mantle)
10 mm
25 mm
Inner insulation
Thermocouple
leads
NOTE
Connecting to the connector cable (voltage measurement)
1. Align the BNC connector with the guide groove of the 8841/42 input
connector, and turn clockwise while pressing in to lock the connector.
(Use the 9198 CONNECTION CORD for voltage measurement with the
8937.)
2. To remove from the unit, turn the BNC connector counterclockwise to
release the lock, then pull it.
Thermocouple connection (temperature measurement)
1. Strip off the insulation as shown in the illustration.
2. Push the tab with a flatblade screwdriver or similar.
3. While keeping the tab depressed, insert a stripped wire into the connector
opening.
4. Release the tab to lock the wire.
5. To remove the thermocouple, pull it out with the button depressed.
･ To mount and remove the thermocouple, use a tool such as a screwdriver.
･ The push-button terminal block of the 8937 VOLTAGE/TEMP UNIT is
specialized for the thermocouple. Do not use thermocouples other than the
specifiedtypes(K,J,E,T,N,R,S,B).
･ If the thermocouple is connected in reverse, the temperature reading will not
be correct.
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