In this thesis, a Wireless Health Monitor system for novel spacesuit verification and tests is presented. This system monitors the operator's health-related vital parameters and incorporates data acquisition, collecting and processing, wireless transmission, data displaying and logging. Power-saving technics for battery-powered applications are incorporated. A proprietary communication protocol for multi-node wireless network is developed and integrated. An embedded web interface for system control and data monitoring is utilized to achieve platform independence and reliability. Calculations and simulation results for the algorithms developed for gas flow measurements are presented. Packaging for this system, sensor calibration procedures, final device characteristics, specifications and field test results are described. Finally, future work toward possible device operation, improvement, and additional features is considered.