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speedtron
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Accuracy Class 2 - EN 13190

03/19/2009 1:10 PM

Chief,

Do you have a idea what is " Accuracy class: 2 as per EN 13190, measuring range.

Thanks,

speed
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Electroman
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#1

Re: Accuracy Class 2 - EN 13190

03/19/2009 1:31 PM

All I know is that the accuracy class 2 , 1.5, 1, 0.5 etc.... relates to the percentage error of the reading, or maybe of full scale or best fit straight line...

So accuracy class 2 would correspond to an accuracy as stated in the spec EN13190 of +/- 2%

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speedtron
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#2
In reply to #1

Re: Accuracy Class 2 - EN 13190

03/19/2009 1:35 PM

chief electroman,

Thanks u so much.

speed
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Electroman
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#3
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Re: Accuracy Class 2 - EN 13190

03/19/2009 1:36 PM

My pleasure....

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craigza
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#4

Re: Accuracy Class 2 - EN 13190

03/23/2009 5:21 AM

Hi all,

Actually in this instance this refers to temperature measuring devices; bi-metal themometers; RTDs; Thermocouples etc.

You have class 1 or A

and class 2 or B

Class 1 (A) - very high accuracy - used more for laboratory applications

Class 2 (B) - not as accurate as Class 1 - but mainly used in industrial applications.

As you can see the class refers to the actual error of the measured value. You can get the definitions and their values with a google search.

Regards,

Craig
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Electroman
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#5
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Re: Accuracy Class 2 - EN 13190

03/23/2009 10:04 AM

I don't know what EN13190 states but this accuracy classification is used for all manner of measuring instruments, not just thermocouples etc...

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speedtron
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#6
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Re: Accuracy Class 2 - EN 13190

03/23/2009 1:03 PM

Chief craiqza,

Thank you so much for the information.

thanks,

speed
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Electroman
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#7

Re: Accuracy Class 2 - EN 13190

03/23/2009 3:07 PM

Ahh I've just googled EN13190 and it is to do with dial thermometers only, as below.

DIN EN 13190:2002

Dial thermometers; English version of DIN EN 13190 (FOREIGN STANDARD)
This European Standard specifies requirements and testing for dial indicating thermometers using temperature sensing methods of gas expansion, liquid expansion, and bi-metallic strip. With nominal sizes from 40 mm to 160 mm and temperature measurement from -100 oC to +700 oC. Thermometers specified have circular scales for industrial use only. Thermometers of square form are also covered by this standard except for case, scale and pointer dimensions. Annex A includes recommendations for selection and installation.
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craigza
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#8

Re: Accuracy Class 2 - EN 13190

03/24/2009 1:20 AM

Hi all,

As stated earlier - it applies to all temperature elements - not just bi-metal themometers.

I have a copy somewhere but will have to dig it up.

When we specify an accuracy class on a temperature element - 99% of the time we specify class b (2) as per EN 13190.

Regards,

Craig
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