Contents 1 Safety instructions �������������������������������������������������������������������������������������3 2 Items supplied �������������������������������������������������������������������������������������������4 3 Functions and features ������������������������������������������������������������������������������4 3�1 Application area ��������������������������������������������������������������������������������������4 3�2 Restriction of the application area ����������������������������������������������������������5 4 Function �����������������������������������������������������������������������������������������������������5 4�1 Measuring principle ��������������������������������������������������������������������������������5 4�2 Features of the unit���������������������������������������������������������������������������������6 5 Installation �������������������������������������������������������������������������������������������������9 5�1 Installation location / environment ����������������������������������������������������������9 5�2 Installation of the probe ������������������������������������������������������������������������12 5�3 Shortening of the probe ������������������������������������������������������������������������12...
Preliminary note • Operating elements are indicated in these instructions as follows: [Mode/Enter] = "Mode/Enter" button • Displays are indicated as follows: [OU1] =parameter "OU1", [Hno] = parameter value "Hno" • An instruction is indicated by "►": Example: ►Check whether the unit operates correctly. • A reaction to the action is indicated by ">": Example: >...
2 Items supplied • Level sensor LR3000 (with G¾ process connection) or level sensor LR3300 (with ¾" NPT process connection)� In addition, for installation and operation the following is necessary: • Probe • Mounting material The following components are available as accessories: Probe L = 24 cm / 9�5 inch �����������������������������������������������������������������������������...
Application examples: • Detection of coolant emulsion in a machine tool� • Detection of cleaning liquid in a parts cleaning system� 3.2 Restriction of the application area • The unit can only be used in metal tanks� • The unit is not suitable for media with a dielectric constant < 20 (e�g� oils, fats, plastic granulates, bulk material)�...
Display functions • The unit displays the current level, selectable in cm or inch� Factory setting for LR3000 = cm, for LR3300 = inch� • The set unit of measurement and the switching status for OUT1 are indicated by LEDs�...
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Curve of the analogue signal: ������ ����� �� �� � ���� ���� � L = level A = active zone ( → 11 Scale drawing) S1 = zero signal (4 mA / 0 V) S2 = full signal (20 mA / 10 V) Note the tolerances and accuracy limits during the evaluation of the analogue signal (→ 12 Technical data / data sheet).
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�� � � �� �� �� �� �� � � � � ��� ��� � � � � ��� ��� � � L = level; HY = hysteresis; FE = window • For the switching output a switch-off delay of max� 5 s can be set (e�g� for especially long pump cycles)�...
5 Installation 5.1 Installation location / environment • Vertical installation from the top is preferred� • For optimum operation the sensor should be installed as near as possible to the tank wall� Distance between the probe and the tank wall: minimum 40 mm, maximum 300 mm�...
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• For installation in pipes: The inside pipe diameter (d) must be at least 100 mm� Only install the unit in metal pipes� • For installation in connection pieces: The diameter of the connection piece (d) must be at least 50 mm� The height of the connection piece (h) must not exceed 40 mm�...
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• Do not install the unit in the immediate vicinity of a fill opening� If possible, install a fill pipe (A) in the tank� Minimum distance between the fill pipe and the probe = 50 mm; higher for probe lengths > 70 cm and in case of strong pollution (see above)� �...
5.2 Installation of the probe The probe is not included in the scope of supply� It must be ordered separately� The following probes are available as accessories: Probe L = 24 cm / 9�5 inch ���������������������������������������������������������������������������� order no� E43203 Probe L = 45 cm / 17�7 inch �������������������������������������������������������������������������� order no� E43204 Probe L = 70 cm / 27�6 inch ��������������������������������������������������������������������������...
• Screwing in a process connection in the tank lid (fig� A)� Process connection for LR3000 = G¾, for LR3300 = G¾" NPT� • Installation in the tank lid using a flange plate e�g� for tanks with thin walls (fig�...
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For installation in open tanks, the unit must be installed using a metal fixture� It serves as a transfer plate (R)� Minimum size: 150 x 150 mm for a square fixture, 150 mm diameter for a circular fixture� If possible, mount the unit in the middle of the fixture. The distance D2 must not be below 40 mm. (fig. C); higher for probe lengths > 70 cm and in case of strong pollution (→ 5.1).
Tighten the fixing screws sufficiently� ► Screw the unit in the flange plate and tighten firmly� ► For LR3000 make sure that the supplied sensor seal (A) is correctly positioned� • For LR3300 appropriate sealing material (e�g� Teflon tape) can be applied� •...
6 Electrical connection The unit must be connected by a qualified electrician� The national and international regulations for the installation of electrical equipment must be adhered to� Voltage supply to EN 50178, SELV, PELV� For the scope of validity cULus: The device shall be supplied from an isolating transformer having a secondary Listed fuse rated as noted in the following table�...
7 Operating and display elements � � � � � � � � � ���������� ��� �� �� 1 to 8: Indicator LEDs - LED 1: green = indication of the level in cm� - LED 2: green = indication of the level in inch� - LED 3 - LED 7: not used�...
9 Parameter setting During parameter setting the unit remains in the operating mode� It continues its monitoring function with the existing parameters until the parameter setting has been completed� 9.1 General parameter setting 3 steps must be taken for each parameter setting: Selection of the parameter ►...
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• Change from menu level 1 to menu level 2: ► Press [Mode/Enter] until [EF] is displayed. ���������� ��� ► Press [Set] briefly� > The first parameter of the sub-menu ���������� ��� is displayed (here: [dr1])� • Locking / unlocking The unit can be locked electronically to prevent unintentional settings� ►...
The value is incremented continuously� For reducing the value: let the display move to the maximum setting value� Then the cycle starts again at the minimum setting value� Note: For LR3000 the values are indicated in cm, for LR3300 in inch (= default setting of the units)� ►...
9.3.1 Selection of the display unit ► Select [Uni] and set the unit of measurement: [cm], [inch]� Factory setting: cm (LR3000) / inch (LR3300)� 9.3.2 Offset setting ► Select [OFS] and enter the distance between bottom of the tank and lower edge of the probe�...
9.4.4 Setting of the switch-off delay for OUT1 ► Select [dr1] and set the value between 0�2 and 5�0 s� At 0�0 (= factory setting) the delay is not active� The switch-off delay is only active if hysteresis has been set as switching function (OU1 = Hno or Hnc)�...
10 Operation After power on, the unit is in the Run mode (= normal operating mode)� It carries out its measurement and evaluation functions and generates output signals ac- cording to the set parameters� 10.1 Operation indication � � � � � � �...
10.3 Error indication Possible cause Recommended measures [Err0] Fault in the electronics� Replace the unit� [Err1] Measurement disturbed by foam forma- Install the unit in a still pipe or bypass� tion or strong turbulence� Set or increment [dFo] (→ 9.4.6). Measurement disturbed by separation Remove the oil layer by suction, stir the layers e�g�...
12.1 Setting ranges [LEnG] inch Setting range 15���160 6���63 Step increment 0�5 0�2 [OFS] inch Setting range 0���100 0���39�4 Step increment 0�5 0�2 The setting ranges for the set point (SP1) and reset point (rP1) depend on the probe length (L)� In general the following applies: inch 1�5...
User setting 100 % SPmax 100 % rPmax FOU1 FOU2 cm (LR3000) inch (LR3300) LEnG nonE SPmax = LEnG value in cm minus 4 / LEnG value in inch minus 1�6� rPmax = LEnG value in cm minus 4�5 / LEnG value in inch minus 1�8�...