Polmon instruments offers the polmon smart process scanner that has been specially designed for hvac applications to measure and data logging of parameters like rh, temperature and differential pressure in pharmaceutical industries, biotechnology, formulations, clinical trials, animal houses, glass houses and building automation, etc. Digital data transmission on 2-wire rs485 [modbus-rtu] multidrop network eliminates conventional 4-20 ma loop errors and reduction in cable. 24 v built-in power supply output for interface of transmitters eliminates bulk power supply. Software calibration and ranging through soft touch tactile keypad, individual display for each parameter, alarm set points for each parameter [hi/lo] for visual annunciation eliminates operational problems, ss face plate, flush mount enclosure, communication port for remote data logging, inbuilt 3-channel scanning and 0.3 inchred led display provided in the instrument makes it unique and one of its own kind for clean room process measurement.