Ex. 2. Answer the questions

1. What is metrological traceability ?

2. What does the level of comparability of the measurement mean?

3. What are the critical parts of management quality system ?

4. What is the term «error» reserved for ?

5. What organizations coordinate standards ?

Ex. 3. Are these sentences true or false ?

1. Traceability is most often obtained by evaluation.

2. Metrological traceability was defined by the UN.

3. Metrological traceability is a core concept in metrology.

4. All other measurements either have to be checked to be sufficiently correct or left to chance.

5. Errors can make measurements and counts incorrect.

6. The precise distinction between measurement error and mistakes has been already settled.

7. Calibration is a process where metrology is not applied to measurement equipment.

Ex. 4. Fill the blanks using the following words: establishment, instrument, correctness, to achieve, calibration, term, standard, metrological, key

Metrological traceability is a … concept. This … was introduced by the BIMP. Metrological traceability allows establishing the … of the obtained measurement result and the correspondence of this result with the national … The accuracy of the measurement result is by … the comparability with the previous results obtained earlier. Traceability is obtained by … Calibration means the … of the relation between the indication of a measuring … and the value of a measurement standard. These standards are coordinated by national … institutes.

Ex. 5. Match the beginning with the endings based on the text

Ex. 6. Put the question to the bold-typed words:

1. This method works in one regime.

2. National metrological institutes coordinate standards.

3. The level of traceability establishes the level of comparability of the measurement.

4. New measurement result is compared with the previous measurement result.

5. To establish the precision of the obtained result we must compare it with the previous one.

Ex. 7. Make the summary of the text: «Metrological traceabi- lity», using the following plan:

The definition of metrological traceability;

The way of obtaining metrological traceability;

The spheres of the use of metrological traceability.

Grammar and spelling quiz

Find and correct the grammar and spelling mistakes in the following passages a) Scientific metrology

Scientific metrology are an uantity of metrology. It deal of the establishmen of uantity system, unit system. Scientific metrology develop new methods of measurement. S cientific metrology are called also fundamental metrology. It help to implement all of the measurement standards into practice. Scientifc metrology transfer traceability from the standards to in society users. This sub field of metrology play a important role in society life.

b) What is traceability?

Traceability is o btained by calibration often. Calibration establishe t he relation between the indication of an m easuring instrument and an value of a measurement standart. These standards is u sually coordinated with n ational metrological institutes: National Institute of Standards and Technology,National PhysicalLaboratory, UK, etc. Traceability are use to extended measurement from a method that work in one regime to a different method who work in a diferent regime. An example would be the measurement of the spacing of atomic planes in the same crystal specimen using both x-rays and an beam electron.