GMP231 provides several outputs you can use. Connect the output pins you need, and the power supply and ground pins. Use a shielded cable, and connect the shield to the chassis of the GMP231’s M12 connector, and to ground on the other side.
Ground pin 5 to put the probe in standby mode (stops CO2 measurement). The probe resumes normal measurement operation when pin 5 is no longer grounded, unless its internal measurement shows the temperature is too high.
|Male 8-pin M12||Pin #||Function|
|4||Analog output +|
|7||Power supply +|
Vaisala’s standard connection cable for the GMP231 (item code DRW240977) is a 90 cm long cable with female 8-pin M12 connector on one end, and open ended wires on the other. It supports all outputs from the GMP231, and connects the cable shield to the connector chassis.
|Female 8-pin M12||Pin #||Function||Wire color|
|4||Analog output +||Yellow|
|7||Power supply +||Blue|