User’s & Technical Manual –
ANALOG LIQUID LEVEL SENSOR ALLS6000
GELEC
Industrial Electronics
PAGE
8
5.
GENERAL DESCRIPTION
The
ALLS6000
is a programmable electronic device used for liquid level control between a
desirable region, in open tanks of height from 10 cm up to 500 cm, with analog sensor and
digital output. Its operation is based on the measurement of the hydrostatic pressure of
liquids. This device requires external air supply in order to function using this method.
fig. 1
fig. 2
The pressure that rises at the
unit’s
outlet (O-S) is proportional to the hydrostatic pressure
of the controlled liquid in the tank. An internal sensor measures this pressure and
transforms it to voltage. Afterwards, several electronic circuits and a microcontroller process
this signal and depending on user adjustments, a digital command is taken when the liquid
in the tank reaches the selected target level (TL). The outcome is the fluctuation of the level
into a desirable working region (between a
Target Level
and the
Differential Level
). (fig. 2)
MAIN FEATURES
Precise measurement and level control in open tanks.
Programmable selection of
FILLING/DRAINING
operating mode.
Level control in tanks with foam and variety of liquids (acidic, alkaline etc.)
Suitable for tanks where danger of explosion exists.
Control in open tanks without the danger of sensor damage from falling water.
Programmable selection of
High
,
Low
and
Differential
control levels.
On-board knob for the
Target Level
tuning. (External potentiometer optional)
Customized versions available.
DIN NS32/NS35 mounting.
