Maestro Mine Ventilation
Analog
Both the AirScout™ airflow meter and Vigilante AQS™ air quality station supports analog output signals.
Both use industry standard 4-20 mA signals which are then wired into a PLC or DCS input card on each level.
Analog based systems require more equipment and generally result in much higher CAPEX and OPEX over the life of the mine.
Analog based systems require more equipment and generally result in much higher CAPEX and OPEX over the life of the mine.
Source: http://maestroventilation.com/en/communication-options/analog
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