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 G/M Cerfitication and Calibration
  • information of calibration work
  • Ability of calibration
  • Flow chart of calibration
  • Sonic nozzle calibrating system
  • Mass calibrating system
  • Bell prover calibrating system
  • Gas volume conversion equipment calibrating system
  • Industrial diaphram sonic nozzle calibrating system
  • G/M certification and calibration
  • Sonic nozzle automatic testing system

Sonic nozzle calibrating system

Home > G/M Certification and Calibration > Sonic nozzle calibrating system


 It is a system which calibrates by controlling the pressure of entrace of14 sonic nozzles that are used and combined with sonic nozzle banks which used the principle of sonic nozzle, or determining the flow rate in the sonic nozzles to the size of hole.


  • Nozzle bank : 2EA
  • Nozzle: 14EA (caliber 0.1mm~6.1mm)
  • Pressure gauge: 2EA (first and latter half of Nozzle)
  • Industrial resistance thermometer: 2EA (Nozzle and flowmeter)


  • :Scope of calibration: 0.006 m3/h~250 m3/h
  • System uncertainty: 0.24%
  • -High efficiency and reproduction level


Calibration of gaseous flowmeter (capacity, area, mass flowmeter)