... Dew Point Meter ZA-3501 Portable Dew Point Meter takes high-performance microprocessor as core, takes 320×240TFT color touch display screen ... meanwhile, it merges multiple functions of real-time measurement, curve display, power supply management, time system, file system, data inquiry and network ... in an all-round way!ZA-3501 Portable Dew Point Meter can be used for detecting non-corrosive gas, such ...