Answer / che pin

As previous answer. When the tank full with low sg fluid it
is 0% level. And when the tank is full with higher sg fluid
it is 100% level

Answer / vikash

First fill the tank full with lowspecific gravity fluid and
adjust it to zero .then fill the tank full with high
specific gravity fluid then adjust the span of the
transmitter.

I have a problem with a valve (air to close). When it is fully closed and try to open 1% it doesn't responce till 3% open suddenly more than 3% then back to 3%. I tried to tune positioner then removed it, the problem still exist. Any idea

3 Answers  

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I have observed in field instrumentation work... I remove the fuse of an analog transmitter then it shows 7.75 kg/sq cm (which is practically wrong value)in DCS and when put the fuse it shows 0 in dcs. Then cheach the field transmitter termination and found moister. clean that and then it shows 1.1 kg/ sq cm which is right value. Please describe the above phenomenon.

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Emergency Shutdown Systems/ Plant Shutdown System.

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How many types of Control Modes in process control, plz tell me all.....?

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what is the protection system in solar turbine compressor

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why we use by pas on a positioner? When can a by pass be not used on a positioner ?

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Define the terms Accuracy, precission, Spam, process tolerance while doing calibration of an instrument? Explaini with an example?

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In a class of 150 students, 40 passed in Social Studies, 90 passed in Science and 30 failed in both the subjects. vi)How many students passed in at most one subject among Science and Social Science?

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