CHEN Jiahai, LIANG Songtao, CAO Jing

(PLA Unit 96604, Beijing 100085)

Abstract: As a humidity producer for on -the -spot humidity measurement, a portable humidity generator for controllable temperature has been developed on the basis of the principles of temperature intercomparison and dry and wet air mixing,which can be either used alone for general practice or with a dew-point humidity generator for more demanding practice,thus overc ming the difficulty in humidity calibration for large and medium-sized environment monitoring systems, providing convenience for on the spot supervision and inspection tour and increasing calibration efficiency by more than five times.

Key words: humidity generator, calibration instrument, portable, small-sized, controllable temperature