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How To Read This Gauge?

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#1 Alaaeldin55


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Posted 18 July 2018 - 01:21 PM

Hello, I am struggling with reading this current gauge which is installed on a pump. Any advice? Also I need your help in suggesting any good books on commissioning and before startup work of chemical plants, I know about process itself but nothing about the mechanical or maintenance work of chemical plants, such as types of flanges, gaskets, valves, etc. Thanks in advance.



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#2 latexman


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Posted 18 July 2018 - 02:06 PM

Looks like the power is off to me.

#3 thorium90


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Posted 20 July 2018 - 11:05 PM   Best Answer

The number of divisions between 75A and 150A is 10.




Therefore, each short line is 7.5A and the long line is 15A.

The very first line at the bottom is too near the 0A, so the 7.5A is omitted. Therefore the first line after 0A is 15A. Subsequently, the short line is 22.5A, then the next long line is 30A, so on...


Yup, electrical current gauges are commonly not very linear.

Edited by thorium90, 20 July 2018 - 11:14 PM.

#4 Alaaeldin55


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Posted 26 July 2018 - 11:32 AM

thank you thorium90, that way really helpful!

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