RE 250

Float-type flow meters, solid all-metal version

The proven robust construction of the RE 250 in the process industry also allows use under tough conditions.  Thanks to the full-metal version, these float-type flow meters are ideal for applications with high temperatures and pressure conditions (pressure up to 400 bar, temperature -40 °C to +350 °C) and for measurement of cloudy and corrosive media.

The image shows a full-metal float-type flow meter

Applications:

The RE 250-series float-type flow meters with a standard length of 250 mm (9.84 inch) is suitable for measuring a range of liquids, gases and vapours in closed pipelines thanks to its full-metal design. The robust construction permits use under tough conditions (aggressive media, pressure up to 400 bar, temp. -40 °C to +350 °C). Various types of flanges, claddings and floats fulfil the conditions of the pharmaceutical and chemical industry.

The RE 250 float-type flow meter is used in the following industries:

  • Plant and mechanical engineering
  • Chemicals
  • Building services equipment
  • Food
  • Metal extraction, production and processing
  • Oil and gas
  • Water and wastewater

Advantages of the RE 250 mechanical flow meter:

  • Reliability (long-term stability, service life)
  • Can be used for liquid, gas, vapour
  • Measured media temperatures: -40 °C to +350 °C (optional -80 °C)
  • Available for process pressure up to 400 bar
  • Measurement range limit for liquids: 0,5 l/h to 100.000 l/h (water: +20 °C)
  • Measurement range limit for gas: 0,015 m³/h to 3.000 m³/h (air: +20 °C, 1,013 bar)
  • Precision: 1.6% per VDI/VDE 3513-2 (qG = 50%) - Liquids
  • Silicon-free version available
  • Simple device structure, easy to install and maintain
  • No auxiliary energy for local display
  • Simple interpretation of the measurements
  • High repeat accuracy of the measurements
  • Simple commissioning
  • Cost-effective and simple measurement principle without auxiliary energy
  • No calming section
  • Manufacturer’s application expertise
  • Short lead times

Special features of the RE 250 full-metal flow meter:

  • Robust full-metal fitting with impact-resistant housing cap
  • Can also be used for aggressive and combustible measured media
  • Suitable for use at high pressure and high temperatures
  • Can be equipped with optional heating and cooling jackets
  • Dirt-resistant float guide
  • Float cushioning, for pulsing flows or low operating pressures (recommended esp. for gas measurements)
  • Optionally available with 4 … 20 mA with HART® protocol interface

Measuring tube connections:

  • DIN ISO 228: G ¼ - G 3
  • ANSI B.1.20.1: NPT ¼“ - NPT 3“
  • DIN EN 1092-1: DN 15 – DN 150
  • ANSI B 16.5: ½“ – 6“

How the RE 250 flow meter works:

The position of the float is transferred contactlessly to the display unit via a magnet system and shown there directly on the scale. No external auxiliary energy is required for this.

Measuring ranges Liquids¹: 0,5 – 100.000 l/h
Gases:²: 15 - 3.000.000 l/h
Measuring accuracy
acc. to VDI/VDE 3513-2
( qG=50 % )
Liquids: 1,6
Gases: 2,0
Pressure limits max. 400 bar
Temperature limits -40 °C to +350 °C
Medium-affected parts Stainless steel, PTFE, Hastelloy
Float materials Stainless steel, PTFE, Hastelloy
Flow direction vertically upwards
Process connections DIN ISO 228: G ¼ - G 3
ANSI B.1.20.1: NPT ¼“ - NPT 3“
DIN EN 1092-1: DN 15 – DN 150
ANSI B 16.5: ½“ – 6“
Options Magnetic spring contact(s)
Inductive contact(s)
Analog current output 4-20mA
Float dampingHART®-protocol
PROFIBUS® PA-interface
ATEX version

¹ Standard measurement range for liquids (ρ = 1 kg/l, viscosity 1 mPa.s)

² Standard measurement range for gases (Pe = 0 bar pressure, T = 0 °C, ρ = 1,293 kg/m³, v = 0,0181 mPa.s)

  • Recalibration
  • On-site installation and maintenance

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Product advice

If you have any questions or require a custom solution please call us or write us.
We look forward to hearing from you.

Your contact partner

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Michael Jüch
Sales
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MECON GmbH
Röntgenstraße 105
50169 Kerpen


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Phone: +49 (0)2237 600 06-0
Fax: +49 (0)2237 600 06-40


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