10. Other information - Cooling
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– WTS-300-E - V4.1 - 20.01.2022
10.5 Connection /Parameterization external analogue pressure sensor
Either a pressure sensor for the filling level or the cooling agent can be connected
to the analogue input of the WTS-300. See graphic.
When using the pressure sensor „filling level“, it has to be set as follows:
Installation case
"A"
Set parameter [A54] to 1
Set parameter [A60] (litres per cm filling height) to your tank.
Example: tank-
inside diameter “D” = 250 cm
Formula: D² x 3.14 ÷ 4 ÷ 1000 = litres
Corresponds in the example: 250 x 250 x 3.14 ÷ 4 ÷ 1000 = 49 litre per cm filling
height.
Set parameter [A61] (offset in litres) to your tank.
Quantity of milk in the tank below the pressure sensor that is not determined
Set Parameter [A62] to "0".
Installation case
"B"
Set parameter [A54] to 1
Set parameter [A60] (litres per cm filling height) to your tank.
Example: as before
Set parameter [A61] (offset in litres) to your tank.
Quantity of milk in the tank below the linear area*.
In parameter [A62] enter the distance 'Center sensor' to 'Start linear area' in cm.
Level indicator on the display (in litres)
With a pressure sensor “filling level” the filling level in the tank can be displayed in
the cooling mode by pressing the SET-button (in hectolitres).
Display L.125 = 12,500 litres
* Linearer Linear area = Start of the cylindrical shape of the tank.
From here the incoming milk quantity is linear to the pressure on the sensor.
Pressure sensor
"filling level" *
Pressure sensor
“cooling agent”
Analogue input
either / or **
Tank overflow protection
(see section 10.7)
Cooling level control
(see section 10.6)
Anti-freezing proteciton
(see section 10.8)
* The pressure sensor
„filling level“ must have
a measuring range of
0..1000 mbar.
Installation case "A"
Mounting sensor
within
the linear area
Installation case "B"
Mounting sensor
below
the linear area
Linear
area
Linear
area
= Sensor
= Sensor
** in connection with the
optional IO extension-
module, both functions
can be used simultane-
ously.
