5. Introduction
Measured value smoothing
With V6 sensors measured values of an unstable, fluctuating nature can be
smoothed by taking a sliding average over a number of values programmable
between 2 and 99. The averaging period will depend on the sampling rate and
the number of active channels. However, D7 sensors are assigned their own
fixed averaging period for all primary channels; this can be set via the sensor
menu.
Maximum and minimum values
Each measuring operation acquires and stores the maximum and minimum
values with date and time-of-day. Each of these values can be output, used as
function channel, or deleted.
Average value
Manual averaging is available per channel over a particular period or cycle or
over a series of individual measuring operations.
5.1.3 Process control
To record the measured values from all connected sensors in digital form mea-
suring point scanning must be performed continuously with measured value
output according to a process scheduling system. This may be per output cycle
or, if rapid results are required, at the measuring rate itself. Data from each D7
sensor is acquired individually per scan cycle; this can be adjusted to suit the
fastest acting sensors, slower acting ones being omitted until new updated
values appear.
A measuring operation can be started and stopped by means of a key, the in-
terface, an external trigger signal, the real-time clock, or by a specified limit va-
lue infringement.
Date and time-of-day
Each measuring operation can be accurately logged using the real-time clock
in terms either of date and time-of-day or purely by actual measuring duration.
For the purposes of starting / stopping a measuring operation the start / stop
date and time-of-day and / or the actual measuring duration can be program-
med.
Cycle
The output cycle can be programmed to any value between 1 second and 24
hours. This function permits cyclic output of measured values to the interfaces
or to the memory and provides cyclic calculation of the average value.
Cycle factor
The cycle factor can be used to restrict data being output from certain channels
at the output cycle; this may prove necessary in order to reduce excessive
data flow while measured data is being saved. With D7 sensors the individual
scan time already set can be changed to a longer preferred scan time.
Averaging over measuring point scans
The measured values from measuring point scans can be averaged either over
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