The Nova 253 Series Continuous Analyzers for Low Range Dew Point have been designed primarily for accurate dew point analysis of heat treating atmospheres, instrument air, or other applications which may have typical dew points that are lower than what can be read by standard dew point analyzers, such as the Nova 257 Series. The dielectric polymer sensor provides stable and accurate measurements and is not affected by most gas compositions, except those containing SO2, SO3 and HCl.