With the S505 SUTO has combined 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. S505 comes with two sensor units : Sensor Q uses the new QCM technology which provides fast and accurate measurement results at dew points below – 30 C Td down to – 100 C Td. Sensor P is for high moisture applications from – 50 … + 50 C Td where the SUTO polymer sensor is more suitable. Both sensors can be easily exchanged.