6. Answer the questions.

1. What is Model EP-310 designed for?

2. How is the information obtained processed?

3. What type of converter is used in the unit?

4. What contaminants does the main air supply usually contain?

5. How are leakage problems eliminated in the converter under study?

7. Translate the following sentences paying attention to the Infinitives.

1. The model incorporates the design to convert an analog signal into proportional pneumatic pressure.

2. The model incorporates a solid silicon pressure sensor to measure the line pressure going into operation

3. The needle tends to eventually cut a groove in a sleeve.

4. To put pressure on the needle designers thought of a special spring.

5. Use of low-wattage coil and needle valves has forced our competition to minimize the output airflow.

6. The airflow may be expected to contain contaminants.

7. The contaminants are likely to cause blockage in a sealed valve.

8. It is for the manufacturers to explore effective approaches to eliminating the drawbacks.

9. Efforts are underway to develop new converters which make it possible to replace any component that fails.

8. Translate the following word combinations from Russian into English.

1. Быстрый компаратор интегральной цепи

2. Основной источник снабжение воздухом

3. Выходной ускоритель

4. Электро-пневматический конвертер в сборе

5. Коллектор из твердого алюминия

6. Течь, связанная с использованием шланга

7. Порты с резьбой

9. Write a short account on the topic of your interest in English using the following vocabulary:

The design incorporates, reliable components, to pioneer a concept, to opt, to lose some qualities over time, interchangeable assembly, to utilize, to eliminate drawbacks, to improve, to work thoroughly, promising tendency.

10. Write a short summary of the text using such expressions as:

• Firstly, secondly, thirdly

• However, in contrast to, unlike

• To sum it up, in conclusion, finally

• In addition, as well, too

Make use of the Figures which follow:

XII. Entitle the text. Translate it into Russian. Write an abstract. Text 2b

Our electropneumatic converter also incorporates a unique single-component poppet valve which has no needle or springs. Instead, it employs a low-mass steel disc with a Teflon seat which is immune to mounting orientation or vibration. Unlike needles, this poppet has minimum travel and cannot lose tension over time, thus providing years of trouble-free

service. In case of blockages caused by contaminants, this unique valve can be easily serviced in the field by merely unscrewing the coil assembly and removing the contaminants. Similarly, if the poppet is damaged, it can be replaced in the field without removing the entire valve. If the contaminant is blocking the valve seat, the customer may easily unscrew the

lower portion of the valve, replace it with a new seat and poppet, and screw back the existing coil assembly. In the same way, the pressure sensor can also be easily field serviced if needed. If a problem exists within the manifold ports, the complete electropneumatic converter may be replaced in the field and the EP-310 brought back on line. In order to ensure that sufficient airflow is available to move any actuator/operator without an external booster, the air valves in our electropneumatic

I converter incorporate a large port and a hefty 3 watt coil to maximize the output airflow.

By using a solid manifold without any hoses, poppet valves versus needle valves, a 3 watt coil instead of a 1 watt, and a totally interchangeable and field serviceable assembly, the EP-310 offers a reliable alternative to inexpensive, disposable units.

1. poppet valve – трубчатый (тарельчатый) клапан

2. immune (adj.) - не быть подверженным

3. unscrew (v.) - отвинтить

4. coil (n.) - катушка

5. booster ( n.) – двигатель, ускоритель

6. versus (conj.) – по сравнению с

7. disposable (adj.) - одноразовый

Unit 3