Accuracy is provided through an internal certified laboratory according to international standard systems. Calibration performed by software is fast and simple requiring no mechanical adjustments.
Use of a traceable Pressure Standard is required to suit RVSM stringent ADTS requirements. Calibration parameters are password protected.
DMA-OEM Calibration Procedure
DMA standard ADTS calibration including the following features:
- As found readings (as shown on instrument)
- 1 cycle for the Static line comprising of 5 to 11 measure points (as shown on instrument) with increasing and decreasing pressure values
- 1 cycle for the Pitot line comprising of 5 to 7 measure points (as shown on instrument) with increasing and decreasing pressure values
- 2 cycles for the AoA line (if available) comprising of 6 measure points
- Calibration covering full instrument reading scale
- Uncertainty calculation not performed
ISO 17025 Calibration Procedure
Accredited DMA Calibration Laboratory no. 00145 (accreditation ref.) according to international EURAMET CG-17 guidelines including the following features:
- 3 cycles for the Static line comprising of 11 measure points with increasing and decreasing pressure values and uncertainty calculation
- 3 cycles for the Pitot line comprising of 11 measure points with increasing and decreasing pressure values and uncertainty calculation
- No AoA line cycle (even if available)
- Calibration covering measured range between 14 hPa and 3500 hPa
- Uncertainty calculation performed
- Uncertainty of the reference instrument:
- 50 ppm + 4,4 Pa (k=2) measured range between 14 hPa and 1300 hPa
- 75 ppm + 5 Pa (k=2) measured range between 1300 hPa and 3500 hPa
Measured results Statement of Conformity available upon request.
Note: following returned units reception, initial inspection, functional checks and basic testing are always performed as standard.
Note: only accredited calibrations are performed.
Note: on 30th September, 2025, D. Marchiori Accredited Calibration Laboratory has changed its Accreditation Number from “LAT 106” to “00145 LAT”.
