Preliminary note • An instruction is indicated by “►”: Example: ► Check whether the unit operates correctly. • A reaction to the action is indicated by ">": Example: > LED 9 lights. 1 Safety instructions • Please read the product description prior to set-up of the unit� Ensure that the product is suitable for your application without any restrictions� • Improper or non-intended use may lead to malfunctions of the unit or to un- wanted effects in your application�...
2 Functions and features 2.1 Application area The unit monitors the flow of liquid and gaseous media� 2.2 Operating principle flow monitoring • The unit detects the flow speed to the calorimetric measuring principle and switches the output: - output closed if medium is flowing / output open if no medium is flowing� This applies to the unit on delivery: output = normally open. In case of need you can change the output to normally closed (→ 7.2). It then applies: output open if medium is flowing�...
Using process adapters the unit can be adapted to different process connections� • Adapters have to be ordered separately as accessories� A correct fit of the unit and ingress resistance of the connection are only ensured using ifm adapters. Mounting of the adapter → 3.3. 3.1 Installation location General • The sensor tip is to be completely...
3.2 Sources of interference in the pipe system Components integrated in the pipes, bends, valves, reductions, etc� lead to turbu- lence of the medium� This affects the function of the unit� Recommendation: Adhere to the distances between sensor and sources of interference: 5...10 x D 3...5 x D Flow High Flow High...
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► Mount the adapter (D) on the unit (A). ► Fix the unit + adapter to the process connection by means of a coupling nut, a clamp flange or the like (B)� If it is not possible to slide the fixing element (B) down over the top of the unit: Slide it up over the bottom of the sensor before the adapter is mounted� Mounting the adapter ►...
The national and international regulations for the installation of electrical equipment must be adhered to� Voltage supply to EN 50178, SELV, PELV� ► Disconnect power. ► Connect the unit as follows: 3 BU Core colours of ifm sockets: 1 = BN (brown), 3 = BU (blue), 4 = BK (black) 5 Operating and display elements Flow High 0 1 2 3 4 5 6 7 8 9...
6 Set-up and settings for water (For media other than water → 7.1: Low flow adjustment). ► Switch on the supply voltage� > All LEDs light and go out again step by step. During this time the output is closed (if configured as normally open)� The unit is in the operating mode� ► Let the normal flow circulate in the installation� ► Check the display and determine further actions� The factory setting is suitable for the applica- Flow High...
6.2 High flow adjustment (optional) The unit determines the existing flow as normal flow and adapts the display repre- sentation (all LEDs except the switch point LED light green). ► Let the normal flow circulate in the installation� ► Press the pushbutton and keep it pressed� > LED 9 lights, after approx. 5 s it flashes. ► Release the pushbutton� The unit is now adapted to your flow conditions�...
7.3 Restore the factory setting (reset) ► Press the pushbutton for at least 15 s� > LED 9 lights, after approx. 5 s it flashes. > After approx. 15 s LEDs 0...9 flash orange. ► Release the pushbutton. All settings are reset to the factory setting: - operating area: 5 ...100 cm/s for water - switch point: LED 7 - output function: NO - unlocked� 7.4 Lock / unlock the unit The unit can be locked electronically to prevent unintentional settings� ►...
9 Operation After every power on all LEDs light and go out again step by step (during this time the output is closed if configured as normally open)� The unit is then ready for operation� In case of power failure or interruption all settings remain� Operating indicators Green LED bar: Current flow within the representa- tion range� Indication of the switch point (SP): 0 1 2 3 4 5 6 7 8 9 - LED orange: output closed.
12 Technical data Application area ����������������������������������������������������������� liquids and gases; hygienic systems Operating voltage [V] ������������������������������������������������������������������������������������������19...36 DC Current rating [mA] ����������������������������������������������������������������������������������������������������������250 Short-circuit protection, pulsed; reverse polarity / overload protection Voltage drop [V] �������������������������������������������������������������������������������������������������������������< 2�5 Current consumption [mA] ���������������������������������������������������������������������������������������������< 60 Power-on delay time [s] ���������������������������������������������������������������������� 10, optically indicated Liquids Medium temperature [°C] ����������������������������������������������������-25���95 / ���140 for SIP process Setting range [cm/s]����������������������������������������������������������������������������������������������������3���300 Greatest sensitivity [cm/s] ������������������������������������������������������������������������������������������3���100 Temperature gradient [K/min] �����������������������������������������������������������������������������������������300...
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