• Kofloc Small Karman Vortex Flow Meter For Liquids

    Small Karman Vortex Flow Meter For Liquids

    FM0101/0102/0103/0105 SERIES

    KOFLOC's Karman Vortex Flow Meter FM Series provides an ideal tool for measuring and monitoring liquid flows, including cooling water and cleaning water. Since PPS resin is used for body material,all models of the series offer superior reliability and durability. 


    - Simple design that minimizes a dead space

    - Measurements of very small flows available(up to 0.5L/min)

    - Use of PPS resin has achieved a small,lightweight and rigid

    - The sensor can be used for pure water or deionyzed water.

    - These models are in the process of aplication for CE Marking

    Standard Specifications

    1.Dimension(a) : - FM0101 = 17.8

                               - FM0102 = 17.8 

                               - FM0103 = 17.8 

                               - FM0105 = 32.5

    2.Dimension(L) : - FM0101 = 80.6

                               - FM0102 = 80.0 

                              - FM0103 = 80.0 

                              - FM0105 = 110.0

    3.Connection(X) : - FM0101 = R3/8

                                  - FM0102 = R1/2 

                                 - FM0103 = R1/2

                                 - FM0105 = 25A

    4.Flow range : - FM0101 = 0.5~4L/min 

                           - FM0102 = 2~16L/min 

                           - FM0103 = 4~40L/min 

                           - FM0105 = 10~150L/min

    5.Fluids for measurement : Cooling water,cleaning water,etc.

    6.Measuring accuracy : Within±3.0%F.S.

    7.Repeatability : Within±0.5%F.S.

    8.Outputs : - S Type:4~20mA 

                      - P Type:Pulse(Open collector)(For w/o indicator only) 

                      - D Type:With indicator

    9.Supply Voltage : 12~24VDC

    10.Liquid temperature range : 0~70°C

    11.Proof pressure : 1Mpa

    12.Amb.temperature range : 0~50°C

    13.Amb.humidity range : 5~90%RH

    14.Applicable cleanliness/waterproofing standards : IP64(Splashproof construction per JIS C 0920)

    15.Material for wetted part : PPS with 30% glass mixture ; PPS w/o glass mixture

    16.Cable length : - W/o indicator:2 meters long;terminated/pretinned(presoldered)
                                 - With indicator:3 meters long;terminated/pretinned(presoldered) 

    17.Weight : - with indicator 85 g (sensor) 
                        - with indicator 165g(Sensor unit) 
                        - With indicator:100 grams(Sensor unit) 
                        - with indicator 205g(Sensor unit)

    Principle Measurement
    When a columnar object ( object that generates vortices) is placed in the flow path aof a fluid, regulecalled karman vortex channels, are generated at the back of the object. Since the frequency of a vortex generated is linearly proportional to the flow velocity within a given range, the flow amount can be measuredby counting the number of vortices.
    These series models make use of the principle. When the frequency of each vortex generated is detected by incorporated vortex detector (piezoelectric device), the signal processing circuit outputs a signal which is linearly propotional to volume flow.
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