ACI ASA Sensor Interface Device

The ASA is an analog signal amplifier which accepts an analog voltage or current signal and outputs a voltage signal. Several preset input ranges are jumper selectable. ASA is designed to give a Building Automation System signal output the power (wattage) to control MaxitrolTM gas valves normally installed in rooftop units. The top-adjust trimmer potentiometers can be used to make fine adjustments of gain and offset. The output gain can be adjusted anywhere from 1 to 20 times the input on the ASA (gain will vary depending on type of input). The offset of the output can be +/- 0 to 20 VDC. By using voltage divider applications, the ASA can also accept a resistance input.

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