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English to Portuguese translations [Non-PRO] Tech/Engineering - Electronics / Elect Eng / Gas sensor
English term or phrase:for zero air
The Low Alarm Relay is associated to Gas Inlet 1, High Alarm Relay is associated to Gas Inlet 2, and the Fault Relay is associated with Gas Inlet 3. Gas Inlet 1 should be used for calibration gas for sensor 1, Gas Inlet 2, for sensors 2, and Gas Inlet 3 for zero air for purging and zeroing sensors in an area with a background of gas