Rechner Sensors i-LeVeL Instrucciones De Servicio página 18

Electronic Lock
The probe has an electronic lock (key lock), which can be activated or deactivated at any
time. This electronic lock allows the user to protect the sensor against undesirable adjustment
changes. In the factory settings the electronic lock is not activated.
When the electronic lock is activated the sensor will give a short flash of the POWER LED
when a key is pressed.
To activate or deactivate the electronic lock use the following key:
1. Press and hold the SET key for 5 seconds (until POWER LED flashes)
2. Without releasing the SET key press and hold the MODE key (until POWER LED flashes
again)
3. Release the SET key (while the POWER LED is flashing)
4. Hold the MODE key for 5 seconds (until POWER LED flashes again)
5. Release the MODE key (while the POWER LED is flashing)
6. After the above 5 steps have been carried out, the probe automatically returns to the normal
measuring mode (POWER LED flashes quickly).
Failure and Warning Signals
Symptom
Power LED is off
even when supply voltage is
connected
Continuous flashing of all mode
LEDs during measurement
(approx. 2 Hz)
3 x flashing of all mode LEDs
during adjustment (approx. 2 Hz)
18
SET
SET
5 Sec.
MODE
1 Sec.
SET
MODE
MODE
5 Sec.
Cause
• Wrong electrical connection
• Power LED defect
• Probe defect
• Operating temperature too high or low
• Malfunction
• Adjustment of Analogue MAX without having
adjusted Analogue MIN before
• Switching point for „Switch MAX" lower as
Switching point for „Switch MIN"
• Level „Analogue Max" lower as „Analogue Min"
• Capacity of measuring range exceeded
• Capacity of measuring range insufficient
• Large changes in measurement: e.g. Filling
level change during adjustment or high EM
disturbances (in the wire or sensing field)
LOCK
(De- / activation)