Answer / k.chandra seakhar

the flame sensor is working depend upon the ultravilot rays

Answer / sibapati acharya

Despite the type(which is dependent on frequncy range of
flame),the basic principle is that a concave lens is used
for directing the flame rays to a photo diode. the current
produced from the photo doide is condtioned for flame
detecting in BMS.

Answer / nilesh karpe

There are 2 types of flame detectors in market viz: IR
(infra red ) and UV (ultravoilet ray).

While preparing the graphic diagrams trend display, 3 types of trends are prepared by Yokogawa system vender. These are for process variable, manipulated variable & set point variable. Why these 3 trends are required? Explain the purpose of these 3 trends.

1 Answers  

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whats diffeence between dcs & scada operation.

3 Answers   Orchid, Reliance,

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how can be connected thermocouple in series?what is the need?

2 Answers   Hindalco,

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Which types of quections asked in interview for FORMULATION PLANT (PHARMA)

0 Answers  

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i/p converter always for supply pessure from 3~15 psi only !! And from where this converter bleed the air.

2 Answers  

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describe flow nozzel principle?

0 Answers   SEWA,

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Why Differential pressure transmitter is located below the tappings points for steam & condensible vapor flow measurement application?

2 Answers  

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What is Erosion in a control valve?

0 Answers   CCIE, Fisher,

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what is see back effect?

9 Answers  

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State 5 different method of level measurements.

3 Answers   SRACO,

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what is the role of proportional in process control?

6 Answers   OGDCL, Trident,

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Draw a complete P&ID of a flow suction tank indicating all control & protection equipment. Indicate all its inlets and outlets. Explain the controls for this system

0 Answers  

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