Elektromagnetic flow meters

Elektromagnetic flow meters with „W“ flow tube - wafer design



Průtokoměry se snímači typu „W“ – mezipřírubové provedeni

The W (wafer) flowtube meters are designed to be installed between flanges. The flowtubes are installed between two connecting flanges and tightened with bolts. They come in inner diameters from DN10 to DN150 while they have shorter installation lengths than the F (flanged) flowtubes with the same diameters.

These flowtubes are only made with Teflon liner, and with a choice from several sensing electrode materials (316L stainless steel, Hastalloy C, titanium, ...).

The flowtube contact faces have spigots that align with recesses in the connecting flanges. This arrangement ensures precise flowtube centering within the pipe thus eliminating any potential metering errors from flowtube improper installation. It is therefore useful to order the flow meters with our original installation sets that contain flanges with appropriate recesses. These flanges are also fitted with connecting terminals for earthing conductors. Installation sets may also be custom specified with respect to installation length and type of connection (DIN 11851 threading for food industry, DIN 32676 clamp, etc.)

Earthing rings are also available on request. This guarantees flawless flow meter operation at all times even for installations in plastic pipework.

All materials to be in contact with the medium under measurement are certified for permanent contact with drinking water (edibles) and hot utility water.

Our flow meters are thus convenient for all kinds of food processing applications to measure flow of drinking water, wine and related products, milk, whey, beer, and other food consumables. Besides other, they resist cleaning lyes or acids that are used in such applications on a daily basis. They furthermore meet specific requirement in most chemical facilities.

FG4000 flow meter specifications:

  • Measuring range:
  • 1 :40 ( ±0,5% for MPE standard); 1:500 (Q0=0,2% Qmax)
  • Accuracy:
  • ± 0.5 % (± 0.003 m/s) in range from Qmin do Qmax
  • Minimum liquid conductivity:
  • >5ųS/cm – common liquids; ≥20ųS/cm – demineralized water
  • Power supplý:
  • 230 VAC (+10;−15%) 50–60Hz; optionally 120VAC, 24VAC, 24VDC
  • Power demand:
  • 10 VA
  • IEC 536 protection class:
  • I
  • Ingress protection rating:
  • IP67
  • Meter finish:
  • powder paint (RAL 8023)
  • Ambient temperature rangé:
  • 0–70°C; recommended 15–55°C
  • Pulse output 1:
  • in range 0.0001–1600 p/dm3 (maximum value depends on flowtube inner diameter)
  • Pulse output 2:
  • preferred for negative volume and flow values (bidirectional flow mode)
  • Pulse inputs:
  • 2× range (0.0001–1000 p/dm3) to display flow and/or volume measured by external
  • Empty pipeline indication:
  • yes (optional)
  • Communication modules:
  • RS485, RS422, RS232, M-Bus, ... (optional)
  • Analogue outputs:
  • 4-20 mA, 0-10 V (optional)

    Wafer flowtube specification:

  • Flowtube nominal inner diameter:
  • DN10 – DN150
  • Flowtube liner:
  • PTFE – teflon
  • Electrodes:
  • 316L grade (1.4571) stainless steel; Hastelloy C; platinum; tantalum; titanium
  • Nominal pressure:
  • PN25
  • Flowtube design:
  • compact; split – 4m cabling (optionally up to 40m)
  • Flowtube finish:
  • powder paint (RAL 7043)
  • Minimum liquid conductivity:
  • >5ųS/cm – common liquids; ≥20ųS/cm – demineralized water
  • Ingress protection rating:
  • IP67

    Table of included inner diameters:

    FG 4000 Wafer flowtubes „W“
    DN 10 15 20 25 32 40 50 65 80 100 125 150
    Q0 (m3/h) 0,01 0,02 0,03 0,04 0,07 0,11 0,17 0,29 0,43 0,68 1,06 1,53
    Q1 (m3/h) 0,08 0,19 0,34 0,53 0,87 1,36 2,12 3,58 5,43 8,48 13,2 19,1
    Q3 (m3/h) 3,39 7,63 13,6 21,2 34,7 54,3 84,8 143 217 339 530 763
    k(Imp/dm3) 1600 700 400 200 150 100 60 35 25 15 10 7

    Legenda:

    DN - Flowtube nominal inner diameter
    Q0 - Starting flow
    Q1 - Minimal flow
    Q3 - Maximal flow
    k - Maximal constant of flow conversion

    Diameters and mass of wafer sensors:

    Elektromagnetic flow meters with „W“ flow tube - wafer desigń
    DN PN A ∅B ∅C D E F Svorníky m [kg]
    10 25 100 (66) 75 105 250 75 75 M12x170 4x 4,5
    15 25 100 (66) 75 105 250 75 75 M12x170 4x 5
    20 25 100 (66) 75 105 300 100 100 M12x170 4x 5
    25 25 100 85 115 350 125 125 M12x170 4x 5,7
    32 25 100 100 135 360 160 100 M16x175 4x 6,5
    40 25 100 110 145 420 200 120 M16x175 4x 6,7
    50 25 110 (108) 125 160 510 250 150 M16x175 4x 7,5
    65 25 110 145 180 630 325 195 M16x195 4x 8,5
    80 25 160 (163) 160 195 800 400 240 M16x195 8x 10,5
    100 25 160 (162) 190 230 960 500 300 M20x245 8x 12,5
    125 25 190 220 270 1190 625 375 M24x300 8x 14
    150 25 190 250 300 1390 750 450 M24x300 8x 18

    Generate datasheet

     

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