Судовые механики. Базовая лексика.

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Choose the best options:

Firstly, oil mist goes to the…………………

a.ejector

b.connection box

c.measuring head

The mist is from the …………….

a.crankcase

b.siphon

c.shock absorbers

There are pipes on the left and on the right, which are connected with the…………………… on the crankcase.

a.measuring head

b.crankcase

c.siphones

…………… sucks mist from the engine.

a.Ejector

b.Crankcase

c.Siphone

We use ………………………….not to pass vibration from the engine to the measuring head.

Engineers must control the condition of shock absorbers.

a.ejector

b. shock absorbers

c.measuring head

Put words in correct order to make sentences:

goes to oil Firstly, mist the box connection.

……………………………………………………………………………………………………..

is from mist the The crankcase.

……………………………………………………………………………………………………..

the left pipes on the right on There are and, with connected the which are on the crankcase siphones.

…………………………………………………………………………………………………………………………………………………………………………………………………………………………

mist sucks from Ejector the engine.

…………………………………………………………………………………………………………

not to pass We use the measuring head vibration from the engine shock absorbers to

……………………………………………………………………………………………………………

condition must Engineers control the shock of absorbers.

……………………………………………………………………………………………………………

Oil Mist Detector Part 3

infrared led beam – инфракрасный светодиодный луч

receiving photodiode – приемный фотодиод

too much oil – слишком много масла

cannot reach – не может достигнуть

reflect from – отражаться от

alarm activates – активируется тревога

Put the words in gaps:

Sunlight reflects from water.

If the sensor fails to detect any movement for twenty seconds, an alarm activates.

……………… goes through oil mist.

Beam must reach the …………………… not to activate the alarm.

The engine is eating…………………….

I ……………….the control panel.

Read the text and do exercises:

There is an infrared led beam and a receiving photodiode inside of the measuring head.

If there is too much oil in the mist, the infrared led beam cannot reach the receiving photodiode. It reflects from the oil. Alarm activates and then shut down of engine.

Put words in the gaps:

reach oil beam infrared led beam photodiode activates reflects

There is an ……………………. and a receiving photodiode inside of the measuring head.

If there is too much ….. in the mist, the infrared led ……….. cannot ………. the receiving………………… It ……………… from the oil. Alarm …………….. and then shut down of engine.

Put sentences in the correct order:

It reflects from the oil.

There is an infrared led beam and a receiving photodiode inside of the measuring head.

Alarm activates and then shut down of engine.

If there is too much oil in the mist, the infrared led beam cannot reach the receiving photodiode.

………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………

Oil Mist Detector Part 4:

low explosion limit

per liter of air – на литр воды

supply air – приточный воздух

through – через

calibrated orifice – калиброванное отверстие

Put words in gaps:

1. Very cold ………..can cause frost formation in the heat exchanger, which can damage it.

2.The concentration of oil is at a …………………

3. We do this ………… several programs.

4. From filters air goes to……………………..

5. Radon is measured in picocuries ……………….. (pCi/L), an indicator of radioactivity.

Read the text and do exercises:

If there are 5 percent of low explosion limit (2,5 mg per liter of air), oil mist alarm high activates.

Air filters are very important. Air must be very fresh not to activate alarms. Supply air goes through filters to calibrated orifice and then to measuring head.

Write words in the gaps:

If there are 5 percent of low …………….. limit (2,5 mg …… liter of air), oil mist alarm high activates.

Air filters are very important. Air must be very fresh not to activate alarms. Supply ……… goes through filters to ………………. orifice and then to measuring head.

Write sentences in the correct order:

Supply air goes through filters to calibrated orifice and then to measuring head.

Air must be very fresh not to activate alarms.

Air filters are very important.

If there are 5 percent of low explosion limit (2,5 mg per liter of air), oil mist alarm high activates.

…………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………

Answer the questions:

How to determine oil mist opacity?

What is ejector for?

Shock absorbers.What are they for?

What happens with the infrared led beam inside of the oil mist detector?