Operation
6.6 Examples
SITRANS DA400 for material flow monitoring with protection against explosion
56
Operating Instructions, 09/2007, A5E00841152-01
6.5.3
Displaying and resetting timers
Procedure
The procedure for displaying a timer is as follows:
1.
Press the <TRA> button for five seconds to switch to the trace menu.
"MEnu" and "TRACE" are shown in the middle section of the digital display. "MEnu"
flashes. After these 5 seconds, the appearance of the digital display is as shown below.
2.
Choose the timer with the or buttons.
Note
Timers for acoustic channels that are configured with "oFF" (possible for parameters P.1
to P.4) are not displayed.
Resetting timers
The <ACK> button is used to reset the selected value. "rES" flashes in the digital display for
5 seconds. The value is then set to 0. If the parameter lock is activated, "noRE" is displayed
and the value is not reset.
It is possible to reset all timers using the following setting in the trace menu:
All the timers except the runtime meter of the device are reset ("LIV-T" timer).
6.6
Examples
6.6.1
Example Acoustic channel 1
Acoustic channel 1 (1/So1) should:
●
Work with normal measuring sensitivity.
●
Trigger a measured value alarm in the event of a sensor fault.
●
A pre-alarm from measured value 20 dB.
●
A master alarm from measured value 40 dB.
●
Alarm after value exceeded for 60 s.
