A&D RA3100 Omniace, Instruction Manual

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9.Using Optional Modules - 9.5.Two Channel Temperature Module (RA30-106)
1WMPD4004444 117
9.5.4. Reference Materials
CAUTION
Do not connect something other than a sensor (thermocouple (TC) or platinum resistance temperature
detector) to an input terminal.
(Do not input voltage or current. Doing so may lead to failure.)
Ensure that the voltage between each input and the chassis (GND) and between each channel does
not exceed 300 V AC or DC. (Damage may be caused if the voltage is exceeded.)
When measuring a location with electric potential using a non-insulated thermocouple (TC) or platinum
resistance temperature detector, never touch the metallic parts of the input wire, as electric potential
occurs in the cable itself.
1 Front panel
2 Thermocouple (TC) sensor connection method
2.1 Connection terminal
After screwing the thermocouple (TC) into the temperature sensor connector, insert it into the connector
of the front panel.
The terminal names of the input connectors are indicated on the left side of the panel as + , - ,
and S .
+ /A terminal
Connect the + side wire of the thermocouple (TC).
- /B terminal
Connect the - side wire of the thermocouple (TC).
S /b terminal
Terminal for shielding. Connect the sheath (shield) wire of the non-contact type
sheathed thermocouple (TC). Leave the S terminal unconnected for the grounded
type.
NOTE
When using the non-contact type sensor, the S terminal must be insulated from the + terminal and -
terminal.
If they are connected, correct measurement will not be able to be performed and failure may occur.
The thermocouple (TC) has a + and - side. Connect them correctly.
(Correct measurement will not be able to be performed if the + and - sides are switched.)
Make sure the resistance value of the thermocouple (TC) is 1 kΩ or less.
Use a compatible extension wire for thermocouple (TC) extension.
Connect a single thermocouple (TC) to a single channel.
Wire the thermocouple (TC) cable away from the power line and sources of noise.