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anand.kathale
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Join Date: Dec 2010
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Blind Instruments

03/08/2011 1:30 AM

What is Blind instruments?

Does the calibration test is required for such instruments?

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Tornado
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#1

Re: Blind Instruments

03/08/2011 2:54 AM

This could conceivably mean several things. Can you quote an extended passage where this phrase occurred, so that we could have some context?

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JohnDG
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#2

Re: Blind Instruments

03/08/2011 4:52 AM

The meaning I've come across most frequently is "instruments without displays" - such as a humidity, pressure or temperature sensors + signal processing electronics, with only a data link for accessing the readings.

The readings are typically displayed on a remote display panel (e.g. a PC screen), or used directly by a control system (PLC etc.).

Is calibration required? Yes. If it isn't calibrated, how do you know it is giving a true measurement of the parameter?

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