Vaisala GMM220 Instrukcja Użytkownika Pobierz pdf (Strona 2)

GMM220_____________________________________________________ CO2 Transmitter Modules

M010115EN-E _______________________________________________________________________ 2

Electrical Connections

Figure 3 Electrical Connections

Power supply:

Two supply voltage alternatives:

- +L 12 volt supply input (11 VDC - 20 VDC)

- +H 24 volt supply input (18 VDC - 30 VDC)

- GND common ground for power supply

Average current consumption is 100 mA (+ current output, max. 20 mA)

Analog outputs:

- 0 common for both analog outputs

- V voltage output (default 0-1 V, on request 0-2 V, 0-2.5 V or 0-5V)

- mA current output (default 4-20 mA, on request 0-20 mA)

Serial interface:

The interface is a 5 V (TTL) level full duplex serial port.

- GND signal ground (same potential as the supply GND)

- TX data transmitted by the CO

module (low state corresponding mark)

- RX data received by the CO

module (low state corresponding mark)

Leave other serial interface pins unconnected.

Probe wires: If the CO

module is ordered with a separate probe cable, solder the wires

to the component board according to colors shown in Figure 3.

1 2 3 4 5 6

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Vaisala GMM220 Instrukcja Użytkownika Strona 2