Omega Vehicle Security OM-550 manual Channel Connectors, Application, ∙ Optional Connectors

2.1.3 CHANNEL CONNECTORS

The five input connectors on the right side of the OM-550 accept either voltage or thermocouple inputs values.

Figure 2-9

The mating connectors are color coded by conductor material, as described in the table below. For best accuracy, use the appropriate color of connector.

CONNECTOR COLOR	APPLICATION
White	Uncompensated	Voltage inputs
Black	Type J	thermocouples
Yellow	Type K	thermocouples
Blue	Type T	thermocouples
Purple	Type E	thermocouples
Orange	Type N	thermocouples

∙Optional Connectors:

White	Type B	thermocouples
Green	Type S or R	thermocouples

To minimize danger to personnel, and to avoid ground loops which could affect measurement accuracy, always disconnect the RS-232 cable before attaching the input signals.

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