
8. Data Management
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MiniTest 2500 - MiniTest 4500
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8.5 Single values / Continuous measurement mode
The continuous measurement mode is suitable for some special applications (for example
measurement with an internal tube sensor) allowing to measure without lifting the sensor between
readings. Set the gauge to work in continuous mode as follows.
1.
Switch the gauge on.
2.
Press and hold . A short bleep confirms that the continuous mode is active.
3.
‘Continuous mode’ is signalled through three flashing lines instead of the measurement unit
(µm, mm, cm). Readings without the measuring range of the sensor connected will also be
displayed with three lines (
- - -
).
4.
Readings are logged to the statistics memory either by pressing the OK key or actuating the
optional footswitch.
5.
Return to single measurement mode by repeating point 2.
8.6 Measuring with statistics
For MiniTest 4500, two different statistical programs are available: single value statistics and block
value statistics (DIN 50982).
Within the APPL-BATCH memory system (siehe Section 3) calculates statistics from a maximum
of 100 series of readings while MiniTest 4100 is able to calculate statistics from as much as 500
measuring series. In total, a maximum of 10,000 single values can be stored.
Single value statistics
All readings of a measuring series are automatically stored for statistical evaluation. From each
measuring series, the following statistical values are calculated or printed out:
cp
:
process capability index
cpk
:
process capability index
Block value statistics
Block value statistics are only available in APPL-BATCH mode. In DIRECT mode, only the single
value statistics can be calculated.
In this mode, the readings of a series are logged in blocks.. The size of a block is alterable via the
initial settings.
Readings: :
Number of single
readings
Mean:
:
Mean value of single
readings
SdtDev:
:
Standard deviation
Var
:
Variation coefficient
Maximum :
Maximum reading
Minimum :
Minimum reading