Simex SRD-99, User Manual

Page: 22 / 112

User manual - DATA RECORDER SRD-99 and cooperating software
6.1.4. Measurement ranges definition of TC inputs ( TC version )
The range of every input's measured signal is defined by selecting sensor type and
specified as user defined range . All values presented in graphic form (graphs, sliders) are
scaled due to user defined range . For thermocouple inputs there is no way to control this
range ( Fig. 6.4 ).
Fig. 6.4. Definition of measurement ranges (
TC version
)
The range of displayed values, unit of measured value and position of the decimal point
(for presentation in numeric form) and name of channel are defined by the user.
6.1.5. Recording momentary and averaged data
Values corresponding to the results of current measurement conducted for each channel can
be recorded (stored in the non-volatile memory of the unit) for further analysis. The recording
of measurement results for all channels is performed with the same frequency, defined by the
user in the range between 1 record per second to 1 record per hour ("
Rec. period "
parameter). Recording times are synchronized with the internal real time clock. Recording can
be stopped at any moment with selected status on digital input of the unit ("
Triggering "
parameter).
In order to enable more advanced mathematical processing of recorded signals it is
possible to set the unit's options to record averaged measurement results. Setting the
recorded value type to
averaged value (parameters " Channel 1 "... " Channel 8 ", depending
on the number of channels in the unit) causes that instead of momentary values the unit
records in its memory values that constitute the average results of measurements conducted
during the set
recording period
. All measurements conducted by the unit shall be averaged,
irrespective of the set recording frequency.
The principle of recording measurements is presented in Fig. 6.5 . In the case of recording
momentary values t(a), t(b), t(c) designate the recording times of values corresponding to
current measurements
a
n
,
b
n
,
c
n
. In the case of recording averaged values
t(a), t(b), t(c)
designate the times of recording values corresponding to measurement averaging results,
a
1
…
a
n
,
b
1
…
b
n
,
c
1
…
c
n
correspondingly.
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