Porter Instrument specializes in the design and manufacture of precision instruments and systems for the measurement and control of low flow gases and liquids.

Digital Liquid Mass Flow Controllers

  • Thermal measurement system yields accurate measurement with less than a 5°C increase in fluid temperature
  • Exclusive control circuitry, combined with a piezoelectric-actuated control valve, provides fast, stable control at low flow rates


  • Variable area flowmeters include 65mm and 150mm scale length tube assemblies
  • Available in either forged body or side-plate construction
  • Interchangeable flow tube assemblies and valves allow configuration changes without removal from process system

Instrument Pressure Regulators

  • All models are direct acting, non-relieving and are cleaned for analytical instrument service
  • Designed specifically to provide high resolution control at the low flow rates typical in instrumentation applications
  • Available with special port locations, manifold mount configurations, or with the regulator integrated into a larger, multi-functional package