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Top 100+ Gas Detection System Interview Questions And Answers

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  • Top 100+ Gas Detection System Interview Questions And Answers

Top 100+ Gas Detection System Interview Questions And Answers

Question 1. What Is A ‘combustible Gas Mixture’?

Answer :

Combustible fuel aggregate is the right ration of fuel and air in the ignition limits.

Question 2. Explain The Operating Principle Of A Gas Detection System.

Answer :

Gas detection device measures the imbalance in the current loop caused by its energetic and in-active filaments within the presence of a combustible fuel.

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Question three. Why Is Gas Detection As Important As Fire Detection?

Answer :

Presence of combustible fuel Is the primary degree of a likely incidence of a fireplace.

Question four. What Are The Components Used In A Gas Detection Loop?

Answer :

A gas sensor, three cord gadget and a fuel screen.

Question 5. What Is A ‘flame Arrester’ In A Gas Sensor? What Does It Do?

Answer :

Flame arrester is used on the sensors head. The sensors are continuously powered to burn the combustible gas for measuring. The flame arrester prevents the occurrence of fireplace outside the sensor.

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Question 6. What Are The Name Of The Filaments Inside The Gas Sensor?

Answer :

There are  filaments. They are called ‘active’ and ‘non-lively’ filaments.

Question 7. How Much Approximately Is The Resistance Of A Gas Sensors Filament?

Answer :

From producer to manufacture the sensor resistance varies. It is approximately three ohms on each of the filament (talk to the station drawings for the exact parameters).

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Question eight. How To Check A Gas Monitor Without Test Gas?

Answer :

Some gasoline monitors are supplied with a self take a look at facility to check its alarm and shutdown functions(ranges).

Question nine. Why Is A Three Wire System Used On The Sensors?

Answer :

The three-twine machine is used to compensate the line resistance. The energetic and non-lively filament loop form a whetstone bridge in the gasoline display. The amount of unbalance inside the current loop in the course of the prevalence of flamable fuel is detected as the share of flamable fuel.

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Question 10. What Are The Types (producer) Of Gas Monitor Systems Used In P.D.O.?

Answer :

The usually use gasoline reveal structures are:

General display
Seiger monitor
Detection instruments
Question eleven. What Is Test Gas Used To Calibrate A Gas Monitor?

Answer :

Methane gas is used for calibrating a fuel monitor.

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Question 12. How Much Is The Gas Concentration In The Test Gas Cylinder?

Answer :

Generally methane 2% by quantity is used as a take a look at gas to calibrate a fuel screen.

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Question 13. What Is The Important Factor Set On A Gas Monitor Loop?

Answer :

Depending on the manufacturer, either it's far the loop cutting-edge or the voltage on the sensor head which has to be set precisely for higher accuracy and sensitivity.

Question 14. Why Is It That Halon Is Not Released On A High Gas Shutdown Alarm In A Gas Turbine Hood?

Answer :

Halon (fire extinguishing agent) isn't always launched on detection of flamable gasoline because the presence of gas isn't always a fire.

Question 15. Why Are There Gas Sensors On The Combustion Air Intake Of Ruston Tb-5000gas Turbines?

Answer :

The presence of combustible gas inside the air consumption may additionally bring about the failure of preventing the gasoline turbine all through a shutdown, due to the fuel and air aggregate constantly to be had to the turbine.

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