AccuFlo QAL

The AccuFlo®QAL is a QAL1-certified (DIN EN 14181/DIN EN 14956/DIN EN 15267-3) measuring device for volume flow measurement in flue gas stacks. The AccuFlo®QAL supports CO2 monitoring for measuring and flow monitoring emissions according to the latest requirements.

The system is easy to install, operate and to put into operation. Its highly flexible design allows the instrument to be retrofitted to existing stacks and ducts and its robust design principle makes it suitable for applications in which other stack flow meter technology can no longer be used due to their measuring principle. This applies to applications with very high exhaust gas temperatures, water vapor saturated gases and flue gases with high dust or particle content. The complete system comes pre-assembled, parameterized and ready for use.

It offers the additional possibility of integrating temperature and absolute pressure measurement into the volume flow sensor. The AccuFlo®QAL can therefore integrate up to three measurements mounted to one flange, significantly reducing integration, installation and commissioning costs.


Technical Specification

Measured quantity: Differential pressure (Velocity)
Optional: Static Pressure, Temperature
Output signals: Volume flow, standardized volume Flow
Optional: Static Pressure, Temperature
Gas: Exhaust gas, flue gas, with dust/particles, water saturated
Temperature range: Standard: −50 … 450 °C, optional −180 .. 1100 °C
Pressure range: Standard: < 0,5 barg
Higher pressure upon request
Stack/Duct Diameter: DN 100 … DN 10000
4″ – 300″
(also suitable for rectangular ducts)
Required straight inlet and outlet pipe runs: Depending on system configuration
Material of wetted parts: Standard: 1.4404 (AISI 316L)
Other options: 1.4541 (AISI 321), 1.4571 (AISI 316Ti),
Hastelloy C22 (alloy 22)
Special materials available upon request
Error limits: According to QAL1 requirements
Measurement range: 2 … 20 m/s (up to 2 … 60 m/s)

QAL1 (certificate number) 0000038500
MCERTS (certificate SIRA MC120218/00)


Optional: ATEX and IECEx (for field instruments)

CE declaration of conformity

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