Omega Vehicle Security freedom OM-550 - Manual (Page 13)

OM-550 u 8 u
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.