Tools for measuring dew point temperature and relative humidity (%RH) in compressed air or gas with faultless accuracy. Proper temperature and humidity measurements in compressed air and gases depend on the choice of the appropriate measuring device. The Series Online Dew Point Meter is a microcontroller-based precision instrument to help ensure the optimum operation of drying equipment. An online dew point meter by Instruments is ideal for precise monitoring of dew point temperatures(C Td) in air/gas output from dryer systems and processes. embedded with micro-controller-based circuits to give a direct read-out in dew point (C Td) or other units corresponding to sensor output based on psychometric equations. To achieve high accuracy, it uses temperature compensation over the complete operational range.