RITTER MilliGascounter MGC-1 PMMA

Table of Contents

Technical Drawing

MGC1 V34 PMMA DataSheet


  1. Counter unit with LCD display
  2. Signal output socket (reed contact)
  3. Gas inlet
  4. Gas outlet
  5. Screw plug for filling
  6. Gas inlet channel
  7. Casing
  8. Base plate
  9. Micro capillary tube
  10. Two reed contacts
  11. Permanent magnet
  12. Packing liquid
  13. Measurement cell (tilting body) with twin-chambers
  14. Tracing screw for liquid level
  15. Inspection screw gas inlet channel

Performance Data

Minimum flow Qmin 1 ml
Maximum flow Qmax 1 ltr/h
Measurement accuracy (1) ±3 | ±1 %
Measuring drum volume, approx (2) 3 ml
Min. measuring volume (resolution) (3) 3 ml
Packing liquid quantity, approx 120 ml
Diameter 98 mm
Height 109 mm
Weight 475 g
Maximum gas inlet pressure 100 mbar
Minimum gas inlet pressure 8 mbar
Gas inlet pressure at start of measurement (5) 9 mbar
Gas Temperature (4) +10 to +60 °C
Minimum dial division (6) 0.01 ml
Maximum indication value (6) 999,999.99 ml
Connection gas in/outlet Screw-type tube coupling
Outside-Ø 6 mm
Inside-Ø 4 mm
  • (1) Because of the physical measurement principle, the measurement error is dependent on the flow rate. The data acquisition software »RIGAMO« (accessory) provides an algorithm, which automatically recalculates the actual measurement data to the real values at the respective actual flow rate on the basis of the calibration curve. Thus, the remaining error can be reduced significantly or the flow rate range can be extended at the constant measurement error of ±3%. The remaining error is better than approx. ±1% across the full flow rate range.
  • (2) = Nominal value; exact value will be determined by individual calibration
  • (3) = Volume of measuring chamber
  • (4) For complete MGC unit applies: With temperatures > room temperature (e.g. if placed in heating furnace) a foam formation of the packing liquid was monitored in particular cases.
  • (5) The minimum gas inlet may be increased if the measurement starts with a high flow rate. In this case a higher pressure is needed until the micro capillary in the base plate is clear of packing liquid.
  • (6) Because of calibration factor with 2 decimals

Model (Materials)

  • Casing: Plexiglass (PMMA)
  • Measurement cell: Polyvinylide fluoride (PVDF)

Standard Equipment

  • Multi-Chamber Measuring Drum
  • Magnetic coupling between measuring drum and counter (for an absolutely liquid-tight casing)
  • 8 or 9-digit Totalizing Roller Counter
  • Large One-needle Dial
  • Supports for Thermometer and Manometer
  • Viton sealing
  • Level and Levelling Feet
  • Bubble level for levelling


V 3.4 / Rev. 2024-02-07 / Subject to alterations.