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Set up
Signal lamp (1)
Mode adjustment (2)
Sensitivity adjustment
(3)
20
Control lamp for indication of the switching status.
green = relay energized
l
red = relay deenergized
l
red (flashing) = failure
l
With the mode adjustment (A/B) you can change the switching
condition of the relay. You can set the required mode
according to the "Function chart" (A - max. detection or
overflow protection, B - min. detection or dry run protection).
With this DIL switch (3) you can set the switching point to
liquids having a density between 0.5 and 0.7 g/cm³ (0.018 and
0.025 lbs/in³). With the basic setting, liquids with a density of
> 0.7 g/cm³ (0.025 lbs/in³) can be detected. In liquids with
lower density, you must set the switch to > 0.5 g/cm³ (0.018 lbs/
in³). The specifications for the position of the switching point
relate to water - density value 1 g/cm³ (0.036 lbs/in³). In
products with a different density, the switching point will shift in
the direction of the housing or tuning fork end depending on
the density and type of installation.
Keep in mind that foams with a density > 0.45 g/cm³ (0.016 lbs/
in³) are detected by the sensor. This can cause faulty
switchings particulary when used as dry run protection system.
6.3 Functional chart
The following chart provides an overview of the switching
conditions depending on the adjusted mode and level.
Level
Mode A
Overflow protection
Mode A
Overflow protection
Mode B
Dry run protection
Switching status
Control lamp
3
4
5
(6) (7)
(8)
Relay energized
3
4
5
(6) (7)
(8)
Relay deenergized
3
4
5
(6) (7)
(8)
Relay energized
SITRANS LVL200S l RELAY (DPDT)
Green
Red
Green
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