Testo 400520 6401 – NIST Tachometer Certificate

Testo offers a variety of calibration services for its instruments. The number on the left is the part number for that particular service.

• 400520 1901 – NIST Temperature Certificate, 3 standard points: +10°C, +25°C, +40°C; or 20°C, +25°C, +40°C
• 400520 1902 – NIST Temperature Certificate, 3 Custom Points
• 400520 1911 – NIST Temperature Certificate for IR Thermometers
• 400520 1913 – NIST Temperature Certificate
• 400520 2601 – NIST RH Certificate with 2 Standard Points 11.3% and 75.3% RH
• 400520 2602 – NIST RH Certificate 2 Custom Point
• 400520 3301 – Calibration service – One (1) Gas & NIST
• 400520 4401 – NIST Air Velocity Certificate 3 Standard Points
• 400520 4402 – NIST Air Velocity Certificate, 3 Custom Points
• 400520 4403 – NIST Flow Hood Certification
• 400520 5801 – NIST Sound Certificate
• 400520 6401 – NIST Tachometer Certificate
• 400520 7501 – NIST Pressure Certificate
• 400520 8501 – NIST Light Certificate