Flow measurement applications involving line sizes 12 inches [305mm] or greater can realise improved installation accuracy and repeatability by averaging the flow rates of two elements.
Distorted, swirling and non-repeatable flow profiles can result in decreased accuracy of single point meters.
It is often impractical or impossible to provide the required straight-run for a fully developed flow profile in large lines.
The new model ST102A flow meter overcomes these flow profile concerns with a simple, economical dual-element averaging system
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.
FCI said the ST102A flow meter and the entire ST100 series of flow meters set a new industry benchmark in process and plant air/gas flow measurement, offering the most feature-rich and function-rich electronics available.
The company said the range's performance delivers unsurpassed adaptability and value to meet plant gas flow measurement in large line applications.
Should a plant’s DCS or PLC interface change over time or an upgrade be desirable, the ST102A flow meter adapts as necessary with a plug-in card replacement that can be changed out in the field.
The display provides comprehensive information with continuous display of all process measurements and alarm status, and the ability to interrogate for service diagnostics.
It also stores up to five unique calibration groups to accommodate broad flow ranges, differing mixtures of the same gas and multiple gases, and obtains up to 1000:1 turndown.
Also standard is an on-board data logger with an easily accessible, removable 2GB micro-SD memory card capable of storing 21 million readings.
The ST100 series 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 NMPS to 305 NMPS with accuracy of ±0.75 per cent of reading, ±0.5 per cent of full scale.
For further information contact AMS Instrumentation & Calibration on 03 9017 8225.