Acceptable accuracy spec of an hourmeter.

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In summary, the conversation discusses the acceptable specifications for an hourmeter that will be used in a machine accumulating a couple thousand hours a year. The accuracy of .2% with +/-2 hours on an accumulation of 1000 hours is brought up, and while it may seem concerning at first, it is deemed acceptable for machine maintenance purposes. The conversation also mentions varying industry standards for hourmeter specs.
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Averagesupernova
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So, as the title says...
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What is an acceptable spec? We're not talking in seconds per year or anything like that. Does anyone know a rough industry standard?
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This hourmeter will be designed into a machine that will accumulate a couple thousand hours a year max. A .2% accuracy will be +/-2 hours on an accumulation of 1000 hours. Would you think this is acceptable? It sounds horrible at first because if the hourmeter were to run for a year (8736 hours) it would come up short or long by 17.5 hours. But when it comes to machine maintenence and things of this nature, I don't see a problem. Opinions are welcome.
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Edit: After a bit of googling I find hourmeter specs anywhere between 20 ppm to .02%.
 
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  • #2
It seems that you answered your own question.

Acceptable is always in the eye of the beholder. If I was doing for preventative maintenance purposes, I would think 10% is acceptable.
 

FAQ: Acceptable accuracy spec of an hourmeter.

What is an hourmeter and why is it important?

An hourmeter is a device used to measure the number of hours that a machine or equipment has been in operation. It is important because it helps to track the usage and maintenance needs of the equipment, which can help prevent breakdowns and optimize performance.

What is an acceptable accuracy spec for an hourmeter?

An acceptable accuracy spec for an hourmeter is typically considered to be within ±1% of the actual operating time. This means that the hourmeter should not deviate more than 1% from the actual number of hours the equipment has been in operation.

How is the accuracy of an hourmeter determined?

The accuracy of an hourmeter is determined by comparing its readings to a reference standard. This can be done by running the equipment for a known amount of time and comparing the hourmeter reading to the actual time, or by using a calibrated test bench to simulate equipment operation.

What factors can affect the accuracy of an hourmeter?

The accuracy of an hourmeter can be affected by various factors, such as electrical interference, temperature fluctuations, and mechanical wear. It is important to regularly calibrate and maintain the hourmeter to ensure its accuracy.

How often should an hourmeter be calibrated?

The frequency of calibrating an hourmeter can vary depending on the specific equipment and its usage. In general, it is recommended to calibrate the hourmeter at least once a year or whenever there are significant changes in the equipment's operating conditions. It is also important to follow the manufacturer's recommendations for calibration and maintenance.

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