Advances in Thermal Dispersion Mass Flow Meters - Part 2: Installation and Flow Calibration

Part 1 of this two-part series by Sierra founder, Dr. John G. Olin, describes the principle of operation of a new microprocessor-based thermal dispersion mass flow meter that uses four temperature sensing elements in its flow sensor and has a dry velocity sensor. Part 1 shows how this unique system provides automatic management of changes in gas selection, gas temperature, gas pressure, and outside temperature. This Part 2 describes advances in the installation and flow calibration of thermal dispersion mass flow meters, including a built-in flow conditioner for in line air flow meters that greatly reduces upstream straight-pipe requirements and a high-performance flow calibration facility that accommodates a range of gases, temperatures, and pressures.