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General Wiring Guidelines
·
Route wiring away from sources of noise such as alternators, ignition components, or other high power/frequency
wiring
·
Shielded wire is suggested to reduce the susceptibility of noise; the shield should only be grounded/drained on
one end of the wiring harness
·
CAN wiring should utilized twisted pairs (> 1 TPI); shielding is recommended
Primary ignition/battery power input
Thermocouple Sensor Wiring
·
K-type thermocouples have an industry standard marking in North America: Red is negative (-), yellow is positive
(+). Despite this, some sensors and/or wiring come with alternative coloring. If in doubt, contact the
manufacturer.
·
Specific K-Type thermocouple wire (not copper) must be used for all wiring, extensions, and connections. Failure
to do so will result in inaccurate readings.
·
Connect K-Type sensors to each of the numbered (1 - 8) yellow 'miniature' thermocouple receptacles on the
Module.
·
The receptacles are polarized, positive (+) and negative (-). Reversing this connection will result in inaccurate
readings.
·
Route wiring away from sources of noise such as alternators, ignition components, or other high power/frequency
wiring
·
Shielded wire is suggested to reduce the susceptibility of noise; the shield should only be grounded/drained on
one end of the wiring harness
Cold Junction Compensation
Due to the nature of thermocouples, a "cold" junction sensor has been implemented to provide the most accurate
temperature measurements. This sensor is embedded within the device, all compensations are automatically
applied, and no further action is required by the user. The output of the cold junction sensor is equivalent to the
temperature within the Module and is provided via CAN for reference purposes. The thermocouple sensors'
temperature measurements output via CAN are already CJ compensated and require no further manipulation by the
user.
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