nfx glass tube variable area Flowmeter

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Quick Spec:

  • Gas range 20 cc/min—115 l/min (air equivalent)

  • Liquid ranges 2.0 cc/min-4.6 l/min (water equivalent)

  • Scale length options - 140 mm / 100 mm / 30 mm

The Nixon NFX Glass tube Variable Area Flowmeter is available in a full range of lengths and is available scaled for liquid or gas measurement. Customised scales match the meter to specific conditions.

There is a choice of three scale lengths for optimum readability or compact installation. Repeatability is better than 0.5% of reading to improve process control. An optional needle valve is available for precise control at reduced cost.

The tubes are removable from the frame for easy cleaning/ replacement. Angled or straight connections allow for flexible pipe layout. The meters can be simply mounted to reduce installation costs.

The instruments have a retained polycarbonate cover to ensure operator safety in the event of a breakage. The units are aesthetically styled to suit integration into original equipment.

Technical Data

  • Flow ranges: Gas range 20 cc/min—115 l/min (air equivalent), Liquid ranges 2.0 cc/min-4.6 l/min (water equivalent)

  • Scale length options - 140 mm / 100 mm / 30 mm

  • Accuracy Class - % 1.6 / 2.5 / 4 VDI/VDE

  • Temperature range - -15°C to +20°C

  • Maximum pressure - 20 Bar Non shock

  • Connections - Stainless Steel or Nickel plated brass 1/4” BSP Female

  • Seals - Viton

  • Flow tube - Borosilicate glass

  • Float- Stainless Steel, Anodised Aluminium

Principle / Applications

Variable Area Flowmeter. Displacement of a float in a conical, Borosilicate glass tube.

Applications
Commonly used in industry to measure the flow for:

  • Water treatment

  • Chemical processes

  • Industrial Refrigeration & Air Conditioning

  • Research Laboratories

  • Gas Burners

  • Pilot Plants

  • Annealing Furnaces

Benefits

  • Easy Installation, no straight pipe required

  • Low pressure drop

  • Scaled directly in l/h ,l/m, kg/h, %, mm, etc.

  • Adjustable alarms, in all scales, operated magnetically or with infra-red light

  • Measuring tube in Borosilicate glass

  • Steel construction, coated with Polyamide 11

  • Connections in Steel, AISI-316, PVC & PTFE

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