DewPro MDR3 Series probe includes a removable filter cap for easy cleaning in dirty applications. The probe incorporates a polymer dielectric capacitance sensor for quick response times and accurate dew point measurements as well as a platinum RTD for temperature measurement. The MDR3 has been approved by SIRA (CENELEC) and FM (Factory Mutual, USA) as EEx ia IIC T4 for use in hazardous areas with intrinsic safety barriers.