Siemens SITRANS LVL200S, Руководство по эксплуатации

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20 *7ML19985KS01* SITRANS LVL200S - Operating Instructions
33837-EN-161128
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.
Note:
Keep in mind that foams with a density ≥ 0.45 g/cm³ (0.016 lbs/in³)
are detected by the sensor. This can lead to erroneous switchings,
particulary when the sensor is used for dry run protection.
6.3 Function table
The following table provides an overview of the switching conditions
depending on the set mode and the level.
Level Switching status Control lamp
Mode A
Overflow protec-
tion
closed
Green
Mode A
Overflow protec-
tion
open
Red
Mode B
Dry run protection closed
Green
Mode B
Dry run protection open
Red
Failure of the sup-
ply voltage
(mode A/B)
any open
Off
Fault any open
flashes red
Sensitivity adjustment (3)