Technical and instalation
manual FLOW 38 Batch Page 35 (of 49) COMAC CAL
s.r.o.
Dead band – measurement of start suppression
Star of measurement is registered in the factory and cannot be changed by user. Modifications
can only be carried out by an authorized person under production password.
Zero calibration
The date under "Zero calibration" heading indicates the date when zero flow calibration was
performed.
If you want to recalibrate the zero flow, press the E button. The flow meter evaluates the
measured data automatically and if YES is set, upon confirmation of the selection by the E button, a
new value for zero flow will be set and the date of the last recalibration is updated (when NO is selected,
the value for recalibration is not registered and everything remains in original setting.
Note: Before recalibration is performed, do not forget to close the valves first and secure a real zero
flow (stationary medium) in the system.
Flow simulation
Flow simulation serves for comfortable setting and checking the systems in which the flow meter is
installed without necessity to use realistic flow of medium through the meter and without necessary
installation of the meter in the pipeline. The display shows the simulated flow and current and impulse
outputs of the meter correspond to this data. Such a simulated flow is not recorded in volume invoice
registers, the control can be carried out in user resettable volume register rV.
WARNING! If the meter runs in simulation flow mode, it does not return automatically after two
and a half minutes as it is typical for all other modes and representations. After termination of flow
simulation mode, it is necessary to exit Parameters menu by the (long press >3sec) button!!!
The customer can set the value of the simulated flow. If you want to activate or deactivate the
simulation, press the E button.
Number of significant digits: 6
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