Blue Sea 8239 AC Digital Frequency Meter

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Blue Sea 8239 AC Digital Frequency Meter

Blue Sea 8239 AC Digital Frequency Meter

Original price was: $163.16.Current price is: $84.66.

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Description

The Blue Sea Systems 8239 AC Digital Frequency Meter reads 40 to 90 hertz, a single purpose instrument for boats where generator output needs watching.

Frequency is the number that tells you how the generator is actually running. Engine speed sets it directly, so a set drooping to 57 hertz under load is labouring, and one drifting high is running fast. Motors, compressors and anything with a transformer care about that, and voltage alone will not reveal it. Shore power rarely moves, which is why this meter earns its place on a generator boat and not much elsewhere.

The front is splashproof and display brightness has three levels. See our other marine electrical meters.

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