Portable Dew Point Meter (-100 ... +20 °Ctd) Sigma 505

Sigma 505  combines next generation measurement technology with modern user interface design. The experienced user knows that dew point measurement also requires the measurement of line pressure (according to ISO 8573), since dew point is pressure dependent. With the S505 the line pressure is measured in combination with the dew point, so the user can be confident that the calculation is accurate and free from human error.

The 505 comes with two sensor units: Sensor A uses the new QCM technology which provides fast and accurate measurement results at dew points below –30 ºC down to –100 ºC. Sensor B is for high moisture applications from -50 ºC ... +50 ºC where the polymer sensor is more suitable. Both sensors can be easily exchanged.


  • Measures dew point, temperature and pressure (all in one instrument)
  • 3 sensor solutions available:

A: -100 ºC ... -30 ºC sensor for trace moisture applications

B: -50 ºC ... +50 ºC sensor for standard applications

A+B: covering the full range of dew point measurement

  • Modern color touch screen interface
  • Data logger, USB interface, Bluetooth connection to portable printer
  • Measuring / parking chamber for fast sensor response
  • Application software included