The Portable Dew Point Meter has an operating pressure range of up to 20 bar and a moisture measuring range of 0 to 23000 PPM. Vasthi Instruments is the best choice for monitoring dew point temperatures between-110 C and 30C" A portable dew point meter by Vasthi Instruments is a hand-held, light weight, portable, and affordable dew point meter that is an easy-to-carry, battery-ope... https://vasthi.com/product/9/portable-dew-point-meter