Programming The Low Switching Threshold - Burkert 8041 Manuel Utilisateur

3.6.2 Programming the low switching threshold

The low switching threshold can be programmed within a
range between 0 and the high switching threshold
- The green led flashes once and the red led is off
(Readout mode). If not, refer to § 3.1
- Press the push-button twice briefly: the green led
flashes three times and the bargraph shows the
present low threshold (in % of the full scale)
- Press and hold the push-button: after 2 seconds,
the red led lights up (Configuration mode) and led N°1
of the bargraph flashes 9 times (1 flash = 1% of the full
scale) then it lights up;
The next leds then light up one after the other up to the
high threshold;
Release the push-button when the desired number of
leds is lit (1 led lit = 10% of the full scale).
Press and hold the push-button again: after 2 seconds,
the next led flashes (1 flash = 1% of the full scale).
Release the push-button when the led has flashed the
desired times.
- If necessary, press and hold the push-button again to
change the displayed value.
- Press the push-button briefly to validate the value
visualized by the bargraph and automatically return to the
flow velocity Readout mode or wait for 10 s to return to
the flow velocity Readout mode without validating the
displayed value.
CONFIGURATION
18
Bargraph status
0 100% FS
1 2 3 4 5 6 7 8 910
Present measured flow velocity
0 100% FS
1 2 3 4 5 6 7 8 910
Present low threshold
(full scale by default)
0 100% FS
1 2 3 4 5 6 7 8 910
0 100% FS
1 2 3 4 5 6 7 8 910
0 100% FS
1 2 3 4 5 6 7 8 910
0 100% FS
1 2 3 4 5 6 7 8 910
2 Leds lit = 20% of the full scale
3rd Led flashing 4 times = 4% of
the full scale
The bargraph shows 24% of the
full scale, ie. by a 0-10 m/s mea-
suring range, this corresponds to
a low threshold of 2.4 m/s
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