PCE Instruments PCE-CT 100, User Manual

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With the option
block value statistics
(see chapter 7.7 single value / block value statistics), the
PCE-CT 100 can combine a selectable number of readings to a single measurement value. This
feature facilitates the data acquisition if mean values are required instead of single values. With
this option the statistical values in display become a different meaning. They are now related to a
series of mean values instead of a series of single values.
Parameter Single value statistics Block value statistics
N number of measurements number of mean values
x
̅ mean value mean value of the mean values
σ standard deviation standard deviation of the mean values
↑ maximum value of the series maximum value of the mean values
↓ minimum value of the series minimum value of the mean values
Kvar coefficient of variation coefficient of variation of the mean values
Cp process capability index
process capability index of the mean
values
Cpk process capability index
process capability index of the mean
values
All readings recorded and statistics calculated by the PCE-CT 100 and belonging to the currently
active file can be completely transferred or displayed via the menu item Statistics.
The process capability indices Cp and Cpk are calculated, displayed and transferred only if the
limits are set (menu item Measuring mode/Limits).
7.1 Transfer of statistical values only
The gauge calculates a maximum of 8 statistical values from a measurement series (see chart
above). These can be quickly and simply transferred to a PC in the 2nd menu item Statistics.
Transfer can be made immediately if you are in direct mode or in an active file which is still open. If
you wish to print or transfer data from a file already closed, you can do this under File transfer to
PC (5
th
menu item), chapter 10.
Data transfer to a PC can be done by means of the USB interface or a Bluetooth connection. The
supplied data transfer software receives the data and shows it on the screen.
Procedure:
1. Connect PCE-CT 100 with a PC by means of a USB interface cable or a Bluetooth
connection. The connection must be initialised from the PC
2. Press Arrow Down key twice until “Statistics” appears on the display
3. Press OK key; “Transfer of statistics” appears on the display
4. Press OK key. Data are transferred and “In progress...” appears on the display for a short
time, followed by the start screen with the four dashes – – – –