KROHNE OPTISONIC 6400 Handbook page 63

OPTISONIC 6400
Calculation examples:
Velocity of sound, supply temperature and flow speed are turned on. This means 150000 data
points / 3 = 50000 data points per subject. Required is 1 data point per minute, maximum time
would be 50000 minutes = 833 hours.
Another example:
Volume flow and velocity of sound are turned on. This means 150000 data points /2 = 75000 data
point per subject. Required is 1 data point per 5 seconds = 12 data points per minute. 75000 / 12 /
60 = 104 hours.
2.4.4.5
Filename
Parameters
Sample interval Sample interval Sample interval Sample interval
Event logging
View log in screens
13-04-2010 14:11:09
"Event logging" to log parameters exceeding pre-set limits and errors. To make use of event
logging, data logging must be on. The event logging can be filled in fully independent from the
data logging. The event logging will be logged on event regardless of the interval set.
The event logging can be set to "Status", the occurence of a pre-defined event will be logged with
time and date. The pre-defined events are "Error in device", "Application error", "Out of
specification". for more information, refer to
2.4.4.5
Filename
Parameters
Sample interval
Event logging Event logging
Event logging Event logging
View log in screens
13-04-2010 14:11:09
"Limit"
If the event logger is set to "Limit" the event of a parameter exceeding a pre-set limit can be
logged.
"Measurement"
Choose the parameter for which the events should be logged.
"Threshold" and "Hysteresis"
The threshold is the limit setting. The hysteresis is the change required before the limit event
can be logged again.
Example: Threshold is set to 10 m
exceeds 10 m
has gone under 10 - 1= 9 m
"Polarity"
If the polarity stands on "Normal" the polarity of the parameter is regarded. If the polarity stands
on "Absolute value" the direction of flow is not regarded and events will be logged at for example
both negative and positive values.
08/2011 - 4000972602 - MA OPTISONIC 6400 R02 en
log
Custom
60 s 60 s 60 s 60 s
13 MB free
log
Custom
60 s
13 MB free
3
/h, hysteresis to 1 m
3
/h. Another event can only be logged after the value
3
/h.
www.krohne.com
Error messages
on page 29.
3
/h. An event will be logged if the flow
OPERATION
5
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