2 Controls and visual indication Mode/Enter display of the level, LED display display of parameters and parameter values 2 x LED red switching status; lights if output I / II has switched Mode / Enter selection of the parameters and button acknowledgement of the parameter values setting of the parameter values...
3.1 Measuring range A = measured / display value LK0022 LK0023 LK0024 LK7022 LK7023 LK7024 inch inch inch L = probe length 26�4 10�4 47�2 18�6 72�8 28�7 A = active zone 19�5 7�7 39�0 15�4 58�5 23�0 I = inactive zone 5�3 2�0 5�3...
3.3 Applications • The sensor continually monitors and adjusts to the medium� Thus it adapts itself to different media and compensates for changes in the medium� • For water and hydrous media with temperatures > 35°C install the unit into the climatic tube (order no�...
4.3 Programming mode Setting of the parameter values While viewing a parameter value pressing the "Set" button for more than 5 s causes the unit to enter the programming mode� You can alter the parameter value by pressing the "Set" button and confirm the new value by pressing the "Mode/Enter"...
5.3 Special mounting conditions • If possible, mount the unit in the middle of the vessel when it is installed in small plastic tanks: • For dirty media we recommend: Fasten the unit in a zone where there is much movement of the medium (e�g�...
6 Electrical connection The unit must only be connected by an electrician� The national and international regulations for the installation of electrical equipment must be observed� Voltage supply to EN50178, SELV, PELV� Disconnect power before connecting the unit� Wiring: p-switching (LK7xxx) n-switching (LK0xxx) 4: OUT1 4: OUT1...
7 Programming Press the Mode/Enter button several times until the respective parameter is Mode/Enter Set displayed� Press the Set button and keep it pressed� The current parameter value flashes Mode/Enter Set for 5 s, then the value is increased* (incremental by pressing briefly or scrolling by holding pressed)�...
8 Installation and set-up / operation After mounting, wiring and setting check whether the unit operates correctly� 8.1 Display during operation switch on, initialisation XXX / XX�X level indication; flashing: level close to the maximum measured value - - - level below the active zone SC1, SC2 flashing = short circuit in switching output 1 or 2...
9 Technical information / Functioning / Parameters 9.1 Adjustable parameters Switch-on point: Upper limit value at which the output changes its switching status, indicated in cm or inch� setting range inch in steps of LK0022 / LK7022 2�5 ��� 20�5 1�0 ���...
Page 13
Offset (basic value for display and measured value): The area between the bottom of the vessel and lower face of the measuring probe can be entered as offset value� Thus the display and switch points refer to the real vessel level� setting range inch in steps of...
9.2 Hysteresis (Hno, Hnc): The hysteresis keeps the switching state of the output stable if the level varies about the preset value� When the level is rising, the output switches when the switch-on point has been reached (SPx); when the level is falling again, the output switches back when the switch-off point (rPx) has been reached�...
10 Technical data Operating voltage [V] ������������������������������������������������������������������������������������������� 12���30 DC Current rating [mA] ��������������������������������������������������������������������������������������������������������� 200 Short-circuit protection; reverse polarity protection / overload protection Voltage drop [V] ������������������������������������������������������������������������������������������������������������ < 2�5 Current consumption [mA] ��������������������������������������������������������������������������������������������� < 80 Accuracy of switch point [% of value of measuring range] ���������������������������������������������� ± 5 Repeatability [% of value of measuring range �����������������������������������������������������������������...
12.2 Pumping station Empty the vessel with overflow protection Switching output 1: control to empty vessel upper value exceeded → submersible pump ON lower value reached → submersible pump OFF hysteresis function, normally open (Hno) Switching output 2: overflow protection maximum value exceeded →...
12.3 Storage vessel Monitoring of the acceptable range (alarm) and level control Switching output 1: refilling upper preset value reached → finish refilling below lower preset value → start refilling hysteresis function, normally closed (Hnc) Switching output 2: safety function min - max max�...