SIERRA introduces the Multi-Trak model 670S multi-point mass flow meter system.
Sierra says the new Multi-Trak Model 670S measures mass flow rates in very large ducts or stacks that have non-uniform velocity profiles, high turn-down requirements, dirty gas streams, wide temperature ranges and fast velocity and temperature changes.
The Model 670S compensates for changes in the flow profile by using up to four independent mass flow sensing points to measure the instantaneous average gas mass flow velocity.
The Multi-Trak is commonly used in petrochemical refining, coal-fired electric power generation, steel manufacturing and many other industrial processes that face the challenge of accurate and repeatable gas mass flow measurement in very large pipes or ducts.
A microprocessor-based human machine interface controls all functions of the Model 670S system. The human machine interface is used to collect, visualise and store flow data, as well as set up the individual sensor points, thus allowing the entire system to be configured in the field.
The Model 670S human machine interface integrates the functions of flow measurement, flow-range adjustment, field validation and diagnostics, and displays mass flow rate and totalised flow, as well as other configuration variables.
The Multi-Trak features an accuracy of ±1% reading plus 0.5% of full scale, one-second response to changes in flow rate, and patented Dry-Sense Technology that eliminates sensor drift. Field validation of meter electronics and sensor resistance verifies flow meter performance. The sensors are FM, CSA, and ATEX certified for hazardous areas, and are also CE Approved.