Ketertelusuran
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Definisi
Rantai kalibrasi yang tidak terputus dan terdokumentasi yang menghubungkan hasil pengukuran ke standar pengukuran nasional atau internasional, masing-masing dengan ketidakpastian yang dinyatakan.
Penjelasan
A factory floor caliper is calibrated against a reference gauge block, which was calibrated against a master gauge block, which was calibrated at a national metrology institute (such as NIST in the US) against the SI meter definition. Each step in this chain has a calibration certificate with quantified uncertainty. Without traceability, measurements from different facilities cannot be reliably compared.
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RELATED TERMS
Faktor Konversi
Pengali numerik yang digunakan untuk mengubah suatu besaran dari satu satuan ke satuan lain.
Presisi
Tingkat ketelitian suatu pengukuran, ditunjukkan oleh jumlah angka signifikan.
Akurasi
Seberapa dekat suatu pengukuran dengan nilai sebenarnya dari besaran yang diukur.
Analisis Dimensional
Metode konversi satuan dengan mengalikan faktor konversi yang bernilai 1.
Mil Laut
Satuan jarak yang digunakan dalam navigasi laut dan udara, sama dengan 1.852 meter.