VARIABLE AREA FLOW METERS


SERIES EASYFLOW




Variable area flow meters are optical measuring devices for determination of the volume flow rate of fluids and gases in industrial pipework systems. The flow meter is radially removable and consists of a measuring cone with scale and an inside-lying float.

Variable area flow meter - function
The inside-lying float is lifted by the flowing liquid and the related flow speed until a balance is reached between the lifting force of the medium itself and the weight of the float. The volumetric result can now be read out on the scale in the measuring cone, on the top edge of the variable area flow meter. Ideally the variable area flow meter should be selected on the basis of the required flow rate being always located in the last third of the measuring cone. On request, the cone can be equipped with special scales for media with different densities. If the float is equipped with a magnet, for instance pumps and valves can be operated by attaching a break contact and a make contact at the measuring cone. Generally, variable area flow meters have a measuring range of 1:10. They are cost-effective measuring instruments for optical control of the volume flow.

Our series „Easyflow“ is easy to handle and offers a wide field of uses for various media. The area of application can be enlarged by the  implementation of accessories. „Easyflow“ is a series of variable area flow meters made of plastic, suitable for measuring the volumes of transparent liquids and gases passing through closed pipe systems. The flow meters can optionally be used for flow monitoring, by upgrading them with contact switches. For including them into the pipeline, a large number of connection variants is available. PVC screw fittings with gluing sleeves are offered as standard, however depending on pipe systems also screw fittings with threaded sockets, butt weld or socket weld ends and flanges are available.

 

Advantages:
• Large selection of measuring ranges
• Large number of connection variants
• Eight different nominal sizes
• Five different measuring tube sizes
• According to medium different measuring tube materials
• Diverse float materials
• Exchangeable measuring tubes
• Radially removable with installed pipeline
• Environmentally friendly design
• High flexibility as well as customer-specific solutions
• Short delivery times for standard and special scales


Type for liquids: 700 und 750 FS
Type for gases: 701 und 751 FC

Measuring range for water: 1,5 l/h bis 50.000 l/h or/and %
Standard media: water, 30% HCL, 30% NaOH, 50% NaOH, air 0 bar rel.

Nominal sizes: DN 10, 15, 20, 25, 32, 40, 50, 65


Accessories: contact switch

Accuracy class:
Type 750: class 4 according to VDE/VDI 3513, sheet 2
Type 700: class 2,5 according to VDE/VDI 3513, sheet


Missing data as well as other dimensions and materials on request.

All items you will also find in our webshop.

You can configure the flow meter yourself.


 






    water NaOH HCL Gas  
  Code O 3/5 2 O  
float           temperature in °C -20 -10 O 5 10 20 25 30 40 50 60 70 80 90 100
PP 7 X X X   material measuring cone connection
material
pressure in [bar]
PP magnet 8 X X X    
Stainless steel 1 X X     PVC PVC
PP
stainless steel
        10 10 10 8 6 3,5 1,5        
stainless steel magnet 2                 10 10 10 8 6 3,5 1,5        
PP gas 7       X         10 10 10 8 6 3,5 1,5        
PP Gas magnet 8       X PSU PVC
PP
stainless steel
        10 10 10 8 6 3,5 1,5        
                    10 10 10 8,5 7 5,5 4 2,7 1,5 0,8  
measuring cone           15 15 15 15 15 15 15 14 13 12 11 9,7 8,5 7,7 6
PVC transparent 52 X X X X PVC PVC
PP
stainless steel
        10 10 10 8 6 3,5 1,5        
Trogamid (PA) 41 X               10 10 10 8,5 7 5,5 4        
POLYSULFON (PSU) 42 X X X   15 15 15 15 15 15 15,5 13,5 12 10,7 9,5        
 




Table measuring ranges



  medium
  water HCL 30%ig Na OH 30%ig Na OH 50%ig
  float
DN d A B C R Rp Code stainless steel or
stainless steel magnet
PP or
PP magnet
PP or
PP magnet
PP or
PP magnet
stainless steel or
stainless steel magnet
PP or
PP magnet
stainless steel or
stainless steel magnet
mm mm measuring range (l/h)
20 25 394 357 350 1 1/4 3/4 251 25-250 15-150 14-140 13-130 25-210 12-120 20-200
252 40-400 25-250 23-230 21-210 35-340 20-200 35-320
253 60-640 45-450 42-420 40-400 55-550 36-360 50-500
254 100-1000 70-700 65-650 60-600 87-870 55-550 85-800
25 32 400 357 350 1 1/2 1 321 40-400 25-250 23-230 21-210 35-340 20-200 35-320
322 60-640 40-400 37-370 35-350 55-550 32-320 50-500
323 100-1000 65-650 60-600 55-550 90-870 52-520 85-800
324 150-1600 100-1000 90-900 87-870 130-1350 81-810 120-1300
32 40 408 357 350 2 1 1/4 401 150-1600 100-1000 90-900 87-870 130-1350 81-810 120-1300
402 200-2500 160-1600 150-1500 140-1400 200-2100 130-1300 200-2000
403 400-4000 200-2500 200-2300 180-2200 350-3400 170-2000 330-2200
40 50 418 357 350 2 1/4 1 1/2 501 200-2500 150-1600 140-1500 130-1400 200-2100 125-1300 180-2000
502 400-4000 200-2200 190-2000 180-1900 350-3400 170-1700 330-3200
503 500-5000 250-2500 230-2300 220-2200 440-4300 200-2000 400-4000
50 63 432 357 350 2 3/4 2 631 400-4000 250-2500 230-2300 220-2200 350-3400 200-2000 330-3200
632 600-6000 350-3500 330-3200 310-3100 550-5200 280-2800 500-4800
633 1000-10000 500-5000 470-4600 440-4300 870-8700 400-4000 900-8000
65 75 444 357 350 3 1/2 2 1/2 751 1500-10000 1000-8000 950-7500 900-7000 1300-13000 800-6500 1300-12000
752 2000-20000 1000-10000 930-9300 870-8700 1800-17000 810-8100 1700-16200
753* 10000- 50000 5000-25000 4700-23000 4400-22000 8800-43000 4100-20000 8200-40000
 


*Code 753 and gases on request



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Variable area flow meters
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