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Red y Compact Battery Powered Mass Meter


The Red-y compact series from Voegtlin comprises compact, battery-powered thermal mass flow meters with options for manual valves and alarm functions. They offer high accuracy and a wide dynamic range (special accuracy option ±1% of full scale, turndown ratio 1 : 50, standard ±2 or 3% depending on flow range), include intelligent alarm functions for versatile application and can be installed in any position. The Red-y compact can be powered with a battery (lifetime approx 2 years) or with a 24 Vdc power supply; battery operation makes it a high-precision alternative to variable area flow meters. In addition to the actual flow value, total flow can also be displayed, which is ideal for gas consumption measurements. All devices are calibrated with real gas, which guarantees high accuracy and reproducibility. High-precision needle valves are used in manual valve versions, allowing fine adjustment of the flow rate.

Compare the new Compact 2 with the previous first generation compact

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Red y Compact 2 Series Red y Compact 2 Series
Vogtlin Instruments - Gas Flow Measurement and Control Vogtlin Instruments - Gas Flow Measurement and Control


  • Extremely compact unit
  • Battery power allows portable operation
  • High accuracy flow measurement with wide dynamic range
  • Real gas calibration
  • Compensation for pressure and temperature changes
  • Local LC-display offers on-the-spot direct reading, including bar graphs
  • Displays total consumption as well as actual value (ideal for gas consumption measurements)
  • Measurement, regulation and alarm functions
  • CMOS sensor technology
  • No restriction on installation position
  • Resistant to pressure bumps
  • Battery life at least two years
  • Optional 24 Vdc power supply
  • 3 year warranty (excluding battery)
  • Special Discount Package on Gas Flow Measurement for Universities and Research Institutes


  • Leak measurement
  • Control of gas atmosphere
  • Measurement of gas consumption
  • Burner control (furnace construction)
  • Calibration of instruments (laboratories)

Available to order

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