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Old 07-23-2013, 03:27 PM   #1
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Engine room pyrometer use

I am interested in establishing a data base of normal operating temps for various engine room systems using an infrared pyrometer. Is this worthwhile effort ? I would appreciate suggestions on what specific items to check. Sweet spot of oil pan ? Alternator case ? Wet elbow ? Shaft seals ? Hoses ?

Do you mark a specific spot to insure uniformity of test data ? Thanks.
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Old 07-23-2013, 04:01 PM   #2
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You can keep a log on your temps recorded. Put a mark and number on the item, be it exhaust manifold going downline to muffler and hoses. Alternater case. Heat exchangers. Over 150 degrees F on exhaust could be a problem. Transmission case and oil coolers. Engine room should not be more then 30 Degrees F higher then out side air temp. Smart move.
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Old 07-23-2013, 07:24 PM   #3
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Marine Engine Analysis

Scroll down to "temperature tests"

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Old 07-23-2013, 10:54 PM   #4
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It is good for indicating temps and detecting trends. But they are vastly misunderstood tools. Many people have no idea how they work and over estimate their accuracy. I've got a really good one, a Fluke, and it is only accurate to 1% of the reading.

Read up on emissivity and understand the D:S ratio. Oh, and experiment with black tape.
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Old 07-24-2013, 12:05 AM   #5
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Quote:
Originally Posted by Northern Spy View Post
... they are vastly misunderstood tools. Many people have no idea how they work and over estimate their accuracy. I've got a really good one, a Fluke,...
Unfortunate brand name for a (semi) scientific instrument.
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