VEGA VEGACAP 67 - transistor (NPN_PNP) - Manual (Page 22)

22
6 Setup
VEGACAP 67 • - transistor (NPN/PNP)
31316-EN-130916
To adjust VEGACAP 67, first of all remove the housing cover.
You can adapt the switching point to the solid with the potentiometer.
With the potentiometer (1) and the measuring range selection switch
(2) you can change the sensitivity of the probe to the electrical proper-
ties of the product and the conditions in the vessel. This is necessary
so that the level switch can also reliably detect products e.g. with very
low or very high dielectric figure.
range 1: 0 … 20 pF
Range 2: 0 … 85 pF
Range 3: 0 … 450 pF
With the mode switch (3) you can change the switching condition
of the transistor output. You can set the required mode (max. - max.
detection or overfill protection, min. - min. detection or dry run protec-
tion).
We recommend connecting according to the quiescent current princi-
ple (switching output is opened when the switching point is reached)
because the transistor output takes on the same (safe) condition if a
failure is detected.
Control lamp for indication of the switching status
•
Green = Output closed
•
Red = Output open
•
red (flashing) = failure
The adjustment of the switching point is only possible in installed
condition.
The specifications in parenthesis refer to the preceding illustration.
Vertically mounted probes
1. Set mode switch (3) to mode max.
2. Set meas. range selection switch (2) to range 1.
3. Fill the vessel up to the requested level.
4. Turn potentiometer (1) to position 10.
When the control lamp (6) lights red: set the measuring range
selection switch (2) to the next higher measuring range.
When the control lamp (6) lights green: continue with the next
item.
5. Turn the potentiometer (1) very slowly anticlockwise until the
control lamp (6) lights red.
The measuring system is now ready for operation.
1. Set mode switch (3) to mode min.
2. Set meas. range selection switch (2) to range 1.
3. Lower the level to the requested min. level.
4. Turn the potentiometer (1) to 0, the control lamp (6) lights green.
Switching point adapta-
tion (1)
Measuring range selec-
tion switch (2)
Mode adjustment (3)
Signal lamp (6)
Switching point adjust-
ment
Mode max. (max. level
detection)
Mode min. (min. level
detection)