Answer / y.kathirvel

the smoke detector is a thing that detects the smoke by intensity variation of that area under control. if any fire occurs there the light intensity on that area decreases. this can be measured my photo metric method.Photometric measurement is based on photodetectors, devices (of several types) that produce an electric signal when exposed to light. Simple applications of this technology include switching luminaires on and off based on ambient light conditions, and light meters, used to measure the total amount of light incident on a point.its o/p will be in mV.

What is the full form of PMMC ?

7 Answers   DVC,

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Can Any body tell me about the Contact or Email id of any good Consultancy which help me to find a job in Instrumentation Field in India .I have Six years of Work Experience in the Same field.Please revert me back on shammi_gwalior@yahoo.com ?

1 Answers  

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What is Square Root Extractor for?

9 Answers   Sabic,

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how u calibate pr tx without master tx?

2 Answers  

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what is the meaning of potential free contact. difference between dry and wet contact?

6 Answers   GAIL,

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WHAT IS MEANT BY PROJECT MANAGEMENT STRATEGIES IN INSTRUMENTATION?

1 Answers  

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in a electronic controller why we are using 250 ohm resistance in input signal?is i/p is necessary in control valve when we are using electronic controller give details?

3 Answers   IOCL,

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types of cable..? Use of every types of cable..?

1 Answers   Hindustan Zinc,

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what is difference between pressure,flow and level control valve.

3 Answers  

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How can we calibrate pressure and flow transmitter in the field(online)?

3 Answers   Aramco, Reddy Labs,

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what is diffrence between cascade & three element system.

3 Answers  

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Why all the drains(Gland sealing,ESV,Casing inlet etc) are directly connected to the flash tank instead of hotwell of the condensor in the power plant? My Email Id:naba02222@gmail.com

1 Answers   ABB, Jindal,

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