Is the word instrumentos the same in Brazilian and European Portuguese?

Yes

The only difference between the two varieties is pronunciation. In Brazilian Portuguese, vowels are typically more open and clearly articulated. In Continental (European) Portuguese, vowels—especially unstressed ones—tend to be much more closed, reduced, or even "swallowed" (elided). While a Brazilian would pronounce every syllable of "ins-tru-men-tos" distinctly, a Portuguese person might produce a much shorter, more muffled sound, where the unstressed vowels are barely audible. The spelling, grammar, and meaning remain identical in both varieties.

Brazilian Portuguese Examples

1. "Eu amo tocar vários instrumentos musicais." (I love playing various musical instruments.)
2. "O mecânico organizou todos os seus instrumentos de trabalho." (The mechanic organized all of his work tools.)
3. "A escola comprou instrumentos novos para a banda." (The school bought new instruments for the band.)
4. "A medicina utiliza instrumentos muito precisos." (Medicine uses very precise instruments.)
5. "O governo anunciou novos instrumentos de crédito para as empresas." (The government announced new credit instruments for companies.)

Portuguese Examples

1. "Ele toca vários instrumentos de sopro." (He plays various wind instruments.)
2. "Os instrumentos de corte devem estar sempre afiados." (The cutting instruments must always be sharp.)
3. "Utilizamos instrumentos de medição no laboratório." (We use measuring instruments in the laboratory.)
4. "A empresa utiliza instrumentos financeiros diversificados." (The company uses diversified financial instruments.)
5. "É necessário ter cuidado com estes instrumentos de precisão." (It is necessary to be careful with these precision instruments.)