Fluid Components International ST102A Air/Gas Mass Flow Meter

The ST102A Air/Gas Thermal Mass Flow Meter from Fluid Components International features a dual-element averaging system, improving installation repeatability and accuracy for larger diameter pipes and ducts.

The transmitter electronics average the input from two independent flow elements into a single output. Each flow element can be independently configured for insertion length and process connection to allow installation flexibility. One flow element can be integral with the flow transmitter, or both can be configured as remote for easier access and visibility to the digital display/optical four-button user interface. The flow transmitter also provides independent information for each flow element.

The product offers feature- and function-rich electronics to meet plant gas flow measurement in large line applications, whether the need is for traditional analog outputs or digital bus communications. Should a plant’s DCS or PLC interface change over time, the product adapts as necessary with a plug-in card replacement that can be changed out in the field.

The graphical, multivariable, backlit LCD display/readout provides a continuous display of all process measurements and alarm status, and the ability to interrogate for service diagnostics. The flow meter stores up to five calibration groups to accommodate broad flow ranges, differing mixtures of the same gas and multiple gases, and obtains up to 1000:1 turndown. An onboard data logger contains a removable 2 GB micro-SD memory card capable of storing 21 million readings.

The product can be calibrated to measure virtually any process gas, including moist gas, mixed composition gases and dirty gases. The basic insertion-style air/gas meter features a thermal flow sensing element that measures flow from 0.07 to 305 NMPS with accuracy of ±0.75% of reading, ±0.5% of full scale. Designed for rugged industrial processes and plants, the device is suitable for service up to 454°C and agency approved for hazardous environments.