日本ASK数字流量计

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商品详细描述
  • Digital flow sensor 数显流量传感器
  • DFS 系列
  • 产地: 日本
  • 型号: DFS-3-O DFS-1-0 
    A single unit offers three functions: Flow Switch, Flow Sight, and Flow Meter.


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    Features
    • This sensor has a seven-segment LED digital display to make you read flow rate value easily.
    • You can select one of two different kinds of output types: PNP output or NPN output.
    • This sensor is used with a connector (M12×4-pin).
    • You can use the digital flow sensor with an input power supply of from 12 to 24 V DC (permissible voltage fluctuation ±10 %).
    • The amplifier protection structure conforms to IP67 equivalent.
    • You can set the lower limit of the flow rate. If the flow rate falls below this limit, the red LED lamp (NG) turns on, and contact signal output is given to notify the operator of the critical situation.
    • In the case of low pressure specifications, you can check the flow of fluid by observing the rotor rotation.
    • You can use the sensor at the desired installation position (horizontal, vertical, or tilted position) and in the desired inflow direction.
    • Rotor can be cleaned by air removing the cap from the front of the main body.
    Type  :   DFS-1-O-*
    num Model Digital flow sensor
    num Screw diameter
    (for both sides)    		 1 : Rc1/8
    2 : Rc1/4
    3 : Rc3/8
    6 : Rc3/4
    8 : Rc1
    num Applicable fluid O : Hydraulic oil, lubrication oil (DFS-1: Only O type)
    W :Water, water soluble cutting oil
    num Custom specification Please ask us.
    Example of use
    • Seizure can be avoided by flow control of lubricating oil for the spindles and bearings of machine tools, printing machines, presses and speed reducers.
    • Tool damage and fire can be prevented by control of coolant flow to machine tools.
    • This sensor is used to check if the filter is clogged or not.
    • Coolant flow control.
    Specifications
    ? Body and overall Specifications
    Type DFS-1 DFS-2 DFS-3 DFS-6 DFS-8
    Connection diameter Rc1/8 Rc1/4 Rc3/8 Rc3/4 Rc1
    Maximum Flow Rate ( ?/min) 1 10 20 50 100
    Measurement Range ( ?/min) 0.2∼1 1∼10 2∼20 5∼50 10∼100
    Maximum Pressure (MPa) 3 3 (if a metal/plastic cap is installed)
    25 (if an all-metal cap is installed)
    Flow Sight Function Available Available (if a metal/plastic cap is installed)
    Not available (if an all-metal cap is installed) ※1
    Accuracy (?/min) ±0.1 ±0.5 ±1.0 ±2.5 ±5.0
    Applicable Fluid ※2 Hydraulic oil,
    Lubrication oil    		 Hydraulic oil, Lubrication oil
    Water, Water-soluble cutting oil
    Pressure loss ※3 > 0.03MPa > 0.025MPa
    Temperature 0～80 ℃ (Fluid)     0～50 ℃ (Ambient temperature)
    Material (Fluid contact part) C3604 (Ni Plating),Nd-Fe-B,POM,PC,NBR (DFS-1: C3604→SUS304)

    ? Amplifier specifications
    Power source DC12～24 V (permissible voltage fluctuation ±10 %)
    Current Consumption Maximum 100 mA
    Output NPN open collector (factory setting) /PNP open collector.
    Maximum load 100 mA
    Connection M12X1-4-pin connector (DC)
    Degree of Protection IP67 equivalent
    Material (outside) ABS, NBR, PA, and POLYESTER
    Display ※4 Seven-segment LED (Green/Red)
    Output state ※5 More than adjusted value : LED (Green) ON / LED (Red) OFF
    Less than adjusted value : LED (Green) OFF / LED (Red) ON
    Connector ※6
    ※1： You can not see fluid if the metal cap (for high pressure) is installed.
    ※2： We adjust each type of sensors at our factory in accordance with fluid type. Please specify the type of fluid you intend to use the sensor with when you place your order.
    ※3： Value for Max. Flow rate at viscosity 32 cSt.
    ※4： You can select the non-display mode.
    ※5： You can configure alarm flow rate optionally. See the DFS instruction manual on how to configure.
    ※6： We also sell a single article of sensor cable. Please ask us, for details.
    Principle of actuation

    The detection part of digital flow sensor utilizes rotation of the rotor (turbine) installed in the passage. The measuring part detects, by means of the external magnetic sensor, the rotational speed of the permanent magnet mounted on the circumference of the rotor.
    You can select NPN output or PNP output optionally.
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