Burkert 8041 Manuel Utilisateur page 62

- Hysteresis mode: the change of state of the relay output (OUT) occurs at high
threshold detection by increasing flow velocity and at low threshold detection by
decreasing flow velocity:
Hysteresis mode (NO-wired relay)
Relay output
ON
OFF
Low threshold
To change the relay switching mode, do as follows:
- The green led flashes once and the red led is off
(Readout mode). If not, refer to § 3.1
- Press the push-button once briefly: the green led
flashes twice and the bargraph shows the present
switching mode.
- Press and hold the push-button: after 2 seconds,
the red led lights up (Configuration mode) and the
bargraph shows the features "Hysteresis mode" and
"Window mode" alternately.
- Release the push-button when the desired switching
mode is displayed, then you may:
♦
either press the push-button briefly to validate the
displayed feature and automatically return to the
flow velocity Readout mode.
♦
or press and hold the push-button to display
another feature.
♦
or wait for 10 s to return to the measured flow
velocity Readout mode, without validating the
displayed feature.
8041
CONFIGURATION
Relay output
m/s
High threshold
17
Hysteresis mode (NC-wired relay)
ON
OFF
Low threshold High threshold
Bargraph status
0
1 2 3 4 5 6 7 8 910
Present measured flow velocity
1 2 3 4 5 6 7 8 9 10
Present switching mode
(Hysteresis mode, by default)
Hysteresis mode
1 2 3 4 5 6 7 8 9 10
Window mode
m/s
100% FS