Kalibreringen er en del av kvalitetssikringen.

The ending -en is the definite singular ending for many Norwegian nouns of common gender.

• kalibrering = calibration

• kalibreringen = the calibration

• kvalitetssikring = quality assurance
• kvalitetssikringen = the quality assurance

Unlike English, Norwegian usually adds definiteness to the end of the noun instead of using a separate word like the.

So:

• en kalibrering = a calibration
• kalibreringen = the calibration

Because del is being used as an indefinite singular noun here:

• en del = a part

So er en del av literally means is a part of.

This is very natural in Norwegian. You could think of the structure as:

• Kalibreringen = the calibration
• er = is
• en del av = a part of
• kvalitetssikringen = the quality assurance

Because the sentence is talking about a specific quality assurance process, not quality assurance in general.

• kvalitetssikring = quality assurance in a general sense
• kvalitetssikringen = the quality assurance, a specific one

So:

• Kalibrering er en del av kvalitetssikring.
  = Calibration is part of quality assurance.
  This sounds more general.

• Kalibreringen er en del av kvalitetssikringen.
  = The calibration is part of the quality assurance.
  This refers to something more specific.

Because Norwegian normally marks definiteness by attaching it to the noun itself.

English uses a separate article:

• the calibration
• the quality assurance

Norwegian usually uses a suffix:

• kalibreringen
• kvalitetssikringen

A separate determiner like den is usually added only in certain situations, especially when there is an adjective:

• kalibreringen = the calibration
• den viktige kalibreringen = the important calibration

This is often called double definiteness.

Here av means of in the expression en del av = a part of.

This is a very common fixed phrase:

• en del av prosjektet = a part of the project
• en del av systemet = a part of the system

Be aware that av can mean other things in other contexts too, such as by, from, or off, depending on the sentence.

Yes. Norwegian very often forms compound nouns as one word, where English often uses two or more words.

So:

• kvalitet = quality
• sikring = securing / assurance
• kvalitetssikring = quality assurance

Then with the definite ending:

• kvalitetssikringen = the quality assurance

This is very typical of Norwegian. English speakers often want to split compounds up, but in Norwegian they are usually written as one word.

That s is a linking element often found in Norwegian compounds. It does not have a separate meaning here; it just helps connect the parts of the compound.

• kvalitet
  • sikring → kvalitetssikring

These linking sounds or letters are very common in Scandinavian compound words. You cannot always predict them perfectly, so it is often best to learn compounds as complete words.

The word order is very straightforward:

• Kalibreringen = subject
• er = verb
• en del av kvalitetssikringen = complement

So the pattern is:

Subject + verb + complement

That is the normal order in a simple Norwegian statement.

Yes, but the meaning becomes more general.

• Kalibrering er en del av kvalitetssikring.
  = Calibration is part of quality assurance.
  General statement.

• Kalibreringen er en del av kvalitetssikringen.
  = The calibration is part of the quality assurance.
  Specific situation.

Both are grammatical, but they are used in slightly different contexts.

All three main nouns here are treated as common gender in Bokmål:

• en kalibrering
• en del
• en kvalitetssikring

That is why you see:

• en del
• kalibreringen
• kvalitetssikringen

If a noun were neuter, you would expect et in the indefinite singular, not en.

Yes: Norwegian capitalization is similar to English in some ways, but nouns are not capitalized just because they are nouns.

So this sentence is written:

Kalibreringen er en del av kvalitetssikringen.

Only the first word is capitalized because it starts the sentence. Common nouns like kalibreringen and kvalitetssikringen are normally lowercase unless they begin a sentence.

A useful thing to know is that Norwegian compounds usually have their main stress near the first part of the compound.

So in kvalitetssikringen, the beginning of the word carries the main stress pattern of the compound, rather than the last part being stressed the way it might be in English.

Also, when reading it, it helps to mentally split it into:

• kvalitet
• sikring
• -en

That makes long Norwegian compounds much easier to recognize and pronounce.

Er is the present tense of å være = to be.

So:

• å være = to be
• er = is / are

In this sentence, er simply links the subject to what it is:

• Kalibreringen er en del av kvalitetssikringen.
• The calibration is part of the quality assurance.

It works just like is in English.