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QuadraTherm® qMix RealTime
Flare Measurement System
Measure Flare Gas in Real Time
- Meet EPA rule 40 CFR 63-measure flare gas down to 0.1 sfps (0.03 smps) where ultrasonic flow meters can't operate
- Handles upset conditions at ultra-high flows with wide 1000:1 turndown
- Easy to install with current ultrasonic flow meters-no process shutdown
- Use qMix RealTime App to connect, read, and update new flare gas composition from a GC-real time, no recalibration needed
- Set update frequency by time or by percentage change in the gas composition
- Get flow and composition trend analysis, flow alarming and triggers
Overview
Composition NOW Updates Automatically with qMix RealTime Flare Measurement System
Sierra’s breakthrough QuadraTherm® qMix RealTime Flare Measurement System (FMS) delivers real-time flare gas flow measurement to accurately measure flows down to 0.1 sfps, meeting the full range of EPA regulations. For the first time with thermal technology, flow rate accuracy adjusts to flare gas composition changes within seconds to match real-time readings from a gas chromatograph—retaining accuracy without factory recalibration (See figure below).
Meet EPA Petroleum Refinery Rule 40 CFR 63
Now Plant Engineers have the perfect solution to comply with EPA Refinery Sector Rule 40 CFR 63 rule which requires refineries to measure and report flare gas measurement at flow rates as low as 0.1 fps (0.03 mps).
An Integrated System
Integration with your current system is fast and easy, and we offer full commissioning from our team of engineers. The qMix RealTime FMS integrates with your current compositional gas sampling device or a gas chromatograph to give accurate flows over a large turndown. When the gas composition changes, the qMix RealTime App, loaded onto the supplied laptop or computer, reads the outputs from a gas chromatograph for updated flare gas composition. qMix RealTime creates a new gas composition to match the gas chromatograph composition and automatically updates the 640i/780i thermal mass flow meter to adjust the flow rate to account for its new gas composition.
qMix RealTime App-Adjusts on the Fly
Real-time measurements with thermal flow meters are only made possible by utilizing the power of the evolutionary qMix RealTime App. Based on the NIST library gas database, the App has a library of over 120 pure fluid components with gas properties to create any natural gas or mixture. qMix RealTime App allows for 20 gas components, 20 Modbus fluid composition registers, and the ability to increase accuracy by using AGA-8 density values. Real-time flare gas measurement intervals can be set to every minute, daily, hourly, and weekly.
Beyond Traditional Thermal
The qMix RealTime FMS harnesses the accuracy and computational power of QuadraTherm thermal mass meters and proprietary qMix RealTime software App. Unlike traditional two-sensor thermal mass flow meters, QuadraTherm has four sensors-three precision platinum temperature sensors and one patented no-drift DrySense mass velocity sensor. With this sensor technology breakthrough, accuracy is now twice as good as conventional thermal meters at +/- 0.5% of reading. Flow range is extended to ultra-low flows down to 0.1 sfps (0.03 smps) to extreme high flows 120,000 sfpm (600 smps) with a 1000:1 turndown, enabling high accuracy over a wide range.
Product Benefits
- Meet EPA rule 40 CFR 63 for flare gas measurement at ultra-low flows down to 0.1 sfps (0.03 smps) where ultrasonic flow meters can't operate
- Handles upset conditions at ultra-high flows with wide 1000:1 turndown
- Easy to install with current ultrasonic flow meters-no process shutdown
- Use qMix RealTime App to connect, read, and update new flare gas composition from a GC-real time, no recalibration needed
- Set update frequency by time or by percentage change in the gas composition
- Get flow and composition trend analysis, flow alarming and triggers
Specifications
- Highest Accuracy: +/- 0.5% of reading (inline) ; +/- 0.75% of reading (insertion)
- Measure flow from 0.1 sfps to 120,000 sfpm (0.03 - 600 smps)
- Wide turndown of 1000:1
- qMix RealTime App
- Multivariable: Mass flow rate, temperature and pressure
- In-situ calibration validation
- Patented QuadraTherm four-sensor design
- DrySense no-drift sensor with a lifetime warranty
- Sierra's fluid library, improves over time
- Multi-language capable
- Digital communications: Foundation Fieldbus, HART, Modbus RTU, and Profibus DP
- Hazardous-Area Location Enclosure (IP66)
- Approvals:
- cFMus–Explosion proof for Class I, Div I, Groups B,C,D
- ATEX
- IECEx
- GOST R
- Chinese Pattern
- CE–European Conformity
Documents & Downloads
Datasheets(1) | |||
| File Title | Version | Release Date | |
|---|---|---|---|
qMix Realtime Flare Measurement System Datasheet | V1 | 06/10/2020 | |
Manuals(1) | |||
| File Title | Version | Release Date | |
qMix Realtime Flare Measurement System Instruction Manual | V1 | 06/10/2020 | |
