Quick Answer
For automatic generator start systems, essential sensors include AC power presence detectors, battery state-of-charge monitors, and engine oil pressure sensors.
Essential Sensors for Automatic Generator Start Systems
AC Power Presence Detectors
These sensors are necessary to detect the absence of AC power from the grid or utility provider. They can be configured to detect various levels of voltage and frequency, ensuring the generator starts only when necessary. Popular models include the Sensata 1-Phase Power Monitors and the Eaton Power Monitoring Centers.
Battery State-of-Charge Monitors
Battery state-of-charge monitors provide crucial information about the battery’s health and charging status. This data helps determine when the generator should kick in to recharge the batteries. Recommended sensors include the Victron BMV-702 Battery Monitor and the Mastervolt MDM 702. These sensors typically require a shunt to accurately measure battery current.
Engine Oil Pressure Sensors
Engine oil pressure sensors ensure the generator engine is properly lubricated before starting. They typically require a connection to the engine’s oil pressure gauge. Popular options include the oil pressure switches from Cummins or Cat. These sensors can be configured to start the generator if the oil pressure falls below a set threshold, preventing engine damage.
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