User Manual

MMS
®
Inspection DFT
12
Measurement reading storage On/Off switchable
Measurement units µm/mm or mils/inches
Measurement modes Single reading mode
After each placing of the gage probe the measuring reading is displayed and stored automati-
cally.
Free running mode
After placing the gage probe the continuous display of the measured readings appears without
automatic storage. Useful for quick checking of coating thicknesses over a defined surface area,
e.g. in tank construction.
Scan mode
The Scan Mode allows a defined recording of the measurement acquisition while the probe is
moving over the surface. You can set the number of measured values and the time interval for
the measured value acquisition in the gage.
Useful to determine the coating thickness over surface areas.
Resolution of measurement reading Low (up to 1 decimal place), Medium (up to 2 decimal places), High (up to 3 decimal places)
Air reference value acquisition During measurement, the air reference value is used to reference the zero point determination.
Regular measurement of the air reference value is necessary to achieve high measurement accu-
racy. Automatic capture of the air value always when the gage probe is lifted from the surface.
Calibration For a correct measurement of the coating thickness, the gage must record the properties (per-
meability, electrical conductivity, geometry) of the test piece. This adjustment is carried out by a
calibration. A calibration is specified by the reference specimen (comparable in shape, material,
permeability/electrical conductivity to the test piece) and by the foil standards used (calibration
method).
Calibration Methods
Only available for gage variant High
Gage variant Start uses only method Flexible
• Flexible
Adjustment of the gage to geometrical form and base material of the test piece: Zero point
determination and adjustment to up to two coating thickness values by using calibration
foils. On recalibration, the individual calibration steps can be skipped.
• Zero
Adjustment of the gage to the base material and the geometry shape of the test piece
• 1 Foil
Adjustment of the gage to test piece: Adjustment to a coating thickness value by using 1
calibration foil (especially for measurement tasks in the corrosion field)
• 2 Foil
Adjustment of the gage to test piece: Adjustment to 2 coating thickness values by using 2
calibration foils (especially for measurement tasks in the corrosion field)
• Zero + 1 Foil
Adjustment of the gage to the base material and the geometry shape of the test piece:
Adjustment to the base material and to 1 coating thickness value by using 1 calibration
foil
• Zero + 2 Foil
Adjustment of the gage to the base material and the geometry shape of the test piece:
Adjustment to the base material and to 2 coating thickness values by using 2 calibration
foils
Metrological Standard Functions Measurement Tasks