User Manual

MMS
®
Inspection DFT
15
*
The following specifications are valid for mea-
surements by using the Single reading mea-
surement mode
The values for measurement range, trueness,
repeatability precision and measurement errors
are valid for electrically non-conductive coating
materials on steel or iron (NC/FE). The values
may differ for measurements on non-ferrous coat-
ing materials (NF).
Measurement Ranges*
Steel, iron, cast iron base materials (FE) Non-ferrous metal base materials (NF)
0 … 2500 µm (98.4 mils) 0 … 2000 µm (78.7 mils)
Trueness*
Steel, iron, cast iron base materials (FE) Non-ferrous metal base materials (NF)
Based on Fischer factory calibration standards
and 20 °C (68 °F) for specimen and ambient
temperature
1070…1075 µm: ≤ 1.5 µm
1075 … 1000 µm: ≤ 2 % of nominal value
1000 … 2500 µm: ≤ 3 % of nominal value
1070 … 1050 µm: ≤ 1 µm
1050 … 1000 µm: ≤ 2 % of nominal value
1000 … 2000 µm: ≤ 3 % of nominal value
30.9 … 32.9mils: ≤0.06mils
32.9 … 39.4 mils: ≤ 2 % of nominal value
39.4 … 98.4 mils: ≤ 3 % of nominal value
30.9 … 32.9 mils: ≤ 0.04 mils
32.9 … 39.4 mils: ≤ 2 % of nominal value
39.4 … 78.7 mils: ≤ 3 % of nominal value
Repeatability Precision*
Steel, iron, cast iron base materials (FE) Non-ferrous metal base materials (NF)
Based on Fischer factory calibration stan-
dards, 5 single readings per standard and
20 °C (68 °F) for specimen and ambient tem-
perature
70 … 1050 µm: ≤ 0,25 µm
50 … 2500 µm: ≤ 0,5 % of reading
170 … 1100 µm: ≤ 0,5 µm
100 … 2000 µm: ≤ 0,5 % of reading
0…92.4 mils: ≤ 0.01 mils
2…98.4mils: ≤0.5% of reading
0.9 … 73.9 mils: ≤ 0.02 mils
3.9 … 78.7 mils: ≤ 0.5 % of reading
Influence*
Steel, iron, cast iron base materials (FE)
Non-ferrous metal base materials (NF)
The following values are valid for a coating thickness with a nominal value of 75 µm / 2.95 mils.
The quantity of influences are stated with the expanded measurement uncertainty U with the expanded factor of k = 2 (defines an interval
with the confidence level of 95.45 %) - according to ISO/IEC Guide 98-3:2008-09 "Guide to the expression of uncertainty in measurement".
Curvature (R), measurement error from nominal value with reference to master calibration on flat surface
No measurement error within the trueness as of
R = 75 mm ± 5 mm (2.95 " ± 0.2 ")
Measurement error 10 % for
R = 15 mm ± 1 mm (0.59 " ± 0.04 ")
A minimum of R = 2 mm (0.08 ") is required
No measurement error within the trueness as
of R = 550 mm ± 60 mm (21.65 " ± 2.36 ")
Measurement error 10 % for
R=109mm±8mm (4.29"±0.32")
A minimum of R = 2 mm (0.08 ") is required
Edge distance (R), specification from probe tip center, measurement error from nominal value
A minimum of R = 12 mm (0.47 ") is required
No measurement error within the trueness
A minimum of R = 12 mm (0.47 ") is required
No measurement error within the trueness
Edge distance (X), specification from probe tip center, measurement error from nominal value
A minimum of X = 12 mm (0.47 ") is required
No measurement error within the trueness
A minimum of X = 12 mm (0.47 ") is required
No measurement error within the trueness
Base material thickness (D), measurement error from nominal value
Steel, iron, cast iron base materials (FE)
No measurement error within the trueness as of
D = 0.86 mm ± 0.09 mm
(33.85 mils ± 3.54 mils)
Measurement error 10 % for
D = 0.44 mm ± 0.02 mm
(17.32 mils ± 0.79 mils)
Copper base material (Cu)
No measurement error within the trueness as
of D = 0.09 mm ± 0.009 mm
(3.54 mils ± 0.35 mils)
Measurement error 10 % for
D = 0.035 mm ± 0.002 mm
(1.38 mils ± 0.079 mils)
Measuring
spot
Measuring spot
in the center of
the circular sur-
face
Measuring
spot = Probe
pole center
Measuring
spot