Author Topic: Analog meters tutorial  (Read 659 times)

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Offline 001

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Analog meters tutorial
« on: September 26, 2019, 08:00:41 pm »
Hi

Can anybody told me what is main rules for analog meters? Any links?
I hear about 1/3 scale trick but didnt understand it  :-//
 

Online ArthurDent

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Re: Analog meters tutorial
« Reply #1 on: September 28, 2019, 03:42:22 am »
For best accuracy use a range that gives above 1/3 of full scale deflection. Below 1/3 F.S., accuracy can get much worse.
 
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Offline 001

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Re: Analog meters tutorial
« Reply #2 on: September 30, 2019, 06:09:25 pm »
For best accuracy use a range that gives above 1/3 of full scale deflection.

Left or right side?  :-//
Thanx
 

Offline Grandchuck

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Re: Analog meters tutorial
« Reply #3 on: September 30, 2019, 06:30:41 pm »
As close to full-scale deflection as possible, without over ranging of course.

Another item for best accuracy is to use a mirrored scale to avoid parallax error.  Look straight in; not an an angle.  Your line of sight should be perpendicular to the meter face.  True whether or not a mirror arc is present.  With a mirror, one will see two pointers when not observing straight on.
 
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