SICK FLOWSIC600 Technical Information

154 FLOWSIC600 · Technical Information · 8010125 V 4.0 · © SICK AG
Commissioning
Subject to change without notice
Speed of sound
(SOS)
2
SOS deviation 0.2% The deviation between the current measured path SOS and the
average value of the mean SOS calculated for all paths is
monitored. The current flowing gas velocity is used as a weight-
ing factor, so that temperature stratification is disregarded at
very low flow velocities. The SOS deviation indicates whether or
not a path is measuring the correct transit time.
If the SOS deviation of any path exceeds the value specified for
the parameter "SOS deviation", a User Warning will be
generated.
Note:
When setting the parameter, take into account plausible
conditions for normal operation (in particular temperature
stratification which can occur at low flow rates).
 Considering the application conditions, the "SOS
deviation" may be set to a lower value.
On
Performance Performance limit 7% The quality of the received signals is continuously monitored. If
it drops below the limit specified in "Performance limit", a
User Warning is generated.
 Considering the application conditions, the "Performance
limit" may be set higher than the default.
Off
1
User Warnings must be activated to become effective on the warning output.
2
These User Warning limits are only monitored, as long as certain preconditions are met (  Table 22).
Table 21 Path warnings
Table 22 Warning preconditions
Configurable
precondition
Default
value
Notes
Warning Duration and
averaging for warn-
ings
30s The User Warning status becomes active only if a User Warning has been continuously exceeded
for the time specified in this parameter. All measurements monitored for the User Warnings are
averaged over the time specified in this parameter.
 Configure this parameter to suit the specific application.
Min. VOG for warnings 1 m/s
(3.3 ft/s)
The monitoring of measurements for the User Warnings only becomes effective, if the average
VOG is above the value specified in this parameter.
Caution:
● It is not recommended to change the settings for this parameter!
● This parameter defines the parameter Reg. #7208"PathCompClassLo" which
plays an important role for the path failure compensation (
 pg. 28, 2.4).
● This parameter also defines the lower limit of the gas velocity range classes for
the Diagnostics Comparison Log (
 pg. 159, 5.7.3). Changes to this parameter will
clear all data from the Diagnostics Comparison Log and restart it.
● This parameter is the only User Warning parameter that can only be changed if
the meter is in Configuration Mode and in the User Access Level "Service".
 If necessary, configure this parameter to suit the specific application.
SOS profile rising 0%/s To improve the sensitivity of the SOS deviation warning, the influence of thermal stratification
(e.g. caused by sun radiation on the pipe at low flow velocities) has to be considered. SOS
deviation warning only becomes effective if the the SOS gradient between all paths is below the
limit specified in the parameter "SOS profilerising".
 If necessary, configure this parameter to suit the specific application.

SICK FLOWSIC600 Specifications

General

Brand	SICK
Model	FLOWSIC600
Category	Measuring Instruments
Language	English