Gas-Specific Gravity Meter Directly Measures Modular Weight
Emerson Process Management has released the Micro Motion Specific Gravity Meter, the next generation of the Micro Motion 3098 gas-specific gravity meter designed for custody transfer, refinery/fuel gas energy measurement, hydrogen purity control and many other process gas applications.
In applications where fast response, direct-gas measurement is required, the meter is suitable for problems that users confront on a daily basis, such as managing rapidly changing fired heater air-to-fuel ratios, reducing refinery hydrogen impurities and minimizing windage losses in hydrogen-cooled generator sets.
This meter directly measures gas molecular weight and can be configured to output hydrogen purity, specific gravity, relative density, calorific value/BTU or Wobbe Index. The meter now incorporates a head-mounted transmitter that has the flexibility to digitally connect to distributed control systems as well as the ability to output raw sensor signals to flow computers - conforming to custody transfer best practices.
This new transmitter module can output sensor data in four formats simultaneously -- sensor frequency (time period), 4-20mA, HART and RS485 Modbus. The meter now incorporates a new diagnostic capability, known density verification, which checks the meter for measurement alarm conditions, sensor integrity and the presence of coating, erosion or corrosion. This new technology expands the availability of diagnostics information in critical density measurement applications and can result in significant reductions in maintenance costs and cycle times.