3�4 Measured Value Damping; 3�5 Low Flow Cut-Off; 3�6 Simulation - TESTO 0555 6451 Operating Instructions Manual

3.4 Measured value damping
The damping time [dAP�F] und [dAP�P] allows to set after how many seconds the
output signal has reached 63 % of the final value if the flow value / the pressure
value changes suddenly� The set damping time stabilises the analogue outputs
and the display�
The damping time is added to the response time of the sensor (→ Technical
data)�
The signals UL, crUL, OL and crOL (→ 11) are defined under consideration of the
damping time�
3.5 Low flow cut-off
With the function low flow cut-off [LFC] it is possible to suppress small volumet-
ric flow quantities� Flows below the LFC value are evaluated by the sensor as
standstill (Q = 0)�
3.6 Simulation
With this function, the process values flow, temperature, pressure and meter read-
ing of the totaliser are simulated and their signal chain is reviewed�
When the parameters cr�UL, UL, OL und cr�OL are set, the process values that
lead to an error message or warning can be simulated (→ 11).
When the simulation is started, the values of the totaliser are frozen and the
simulated totaliser is set to 0� The simulated flow value then has an effect on the
simulated totaliser� When the simulation is ended, the initial totaliser values are
restored�
The simulation does not have any effect on the currently existing process
values� The outputs operate as previously set�
During the simulation the original totaliser value remains saved without any
changes even if there is a real flow�
During the simulation operation, no error message of the currently real
application is available� They are suppressed by the simulation�
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