Extech RH600 Dew Point Meter

Extech RH600 Dew Point Meter is designed to accurately measure and datalog dew point levels in compressed air systems. This high-precision dew point meter is designed to help monitor and prevent damage in pneumatic systems. Readings can be monitored with the color graphical display, and transferred to a PC in CSV format through USB. Extech RH600 Dew Point Meter can measure dew point at temperatures as low as -58°C and ambient pressures up to 20 bar.


  • Measure dew point as low as -50°C under ambient pressure up to 20 bar
  • Sensor purge/purification feature enables quickly dry after contact with moisture
  • G1/2" thread for direct insertion of probe sensor into compressed air system
  • Measure low humidity (RH <5%) with high accuracy (±0.025%)
  • Color graphical display with menu based user interface
  • Log and transfer up to 32,000 data sets to a computer through USB


  • 0.01% RH max resolution
  • -10°C to 60°C temperature range
  • 40 to 20,000ppm water concentration
  • 32,000 data sets with time stamps datalogging
  • 3.7V rechargeable Li-ion battery (included)
  • 192 mm × 77 mm × 40 mm
  • 598g weight (1.3lb)
Published: 2022-10-20 | Updated: 2022-10-25