4 | Start-up
FISCHER Mess- und Regeltechnik GmbH
14/28
BA_EN_DE80
4.3.1.2 Output signal
• Damping affects the analogue output and display.
• DIP switch 2 (symmetry) has no function during root extraction. The meas-
uring range is fixed to 'asymmetrical unidirectional' (0...x).
4 5 6
1
ON
2 3
8
7
4 5
Current
Current
Voltage
Voltage
6
6
Linear
Square root
Type / Zero point
Square root
7
7
0,5 s
5 s
Damping
0 ... 20 mA
4 ... 20 mA
0 ... 10 V
2 ... 10 V
Note:
If the analogue output is in U operation, a short circuit at the output is indicated
by the status LED (yellow) flashing continuously. However, an error in power
operation cannot be displayed.
4.3.1.3 Zero point correction
In order to zero the measured value, the zero point button is actuated in the de-
pressurized state. The yellow status LED flashes 1x long and 2x short as con-
firmation.
Zero point correction can compensate for an offset up to 33% of the basic
measuring range.
4.3.1.4 Switch point setting
¼
¼
To activate the switch point setting, the potentiometer must be quickly adjusted
by ¼ turn.
If the switch point setting mode has been activated, the letters "spc" appear on
the display. Now the switch point can be changed with the potentiometer. The
change has a direct effect on the state of the switching contacts. The analogue
output signal continues to correspond to the pressure measured value. Once
activated, the mode cannot be ended without the switch point being overwritten.
If the potentiometer does not change anything for 10 seconds, the set value is
automatically adopted as the switch point.
The switch point setting is confirmed by the status LED (yellow), which briefly
flashes 1x. The status of the switch contact is indicated by the LED switch out-
put.
The switch output is low-resistance between COM and NC as long as the meas-
ured value is lower than the set switch point. In this state the green LED is off.
If the measured value exceeds the set switch point, the COM-NO path becomes
low-resistance and the LED is switched on.
