Continuous Mean Value Recorder For Process Values (Cdr) - Siemens SIMEAS R-PMU Manual

7.3.5

Continuous Mean Value Recorder for Process Values (CDR)

The continuous mean value recorder for process values – Continuous DC Recorder (CDR) – is
a mean value recorder and stores the arithmetic mean of the process values for every recording
interval. The mean value is always calculated over the complete averaging time.
Table 7-31
Recording time
Averaging intervals
Usable DAUs
Recorded values
The maximum recording time can be calculated using the following equation:
⋅
R M
t = ------------- 0.276
max
D
where:
t = maximum recording time in days
max
R = averaging time in seconds
M = parameterized memory space in megabytes (MByte)
D = number of DDAUs activated in the device
Digital Fault Recorder, SIMEAS R-PMU, Manual
E50417-H1076-C360-A5, Release 10.2012
CDR – summary of technical data
Continuously
1 s, 2 s, 5 s, 10 s, 30 s, 60 s, 120 s, 240 s, 300 s, 360 s,
480 s, 600 s
DDAU
Process values
1
⋅
---------------- -
MByte
7
7.3 Continuous Recorder
101