Industry / Furnace and Thermal Process
Draft measurement and furnace pressure control
Industrial furnaces, combustion chambers, and thermal process plants depend on stable draft — typically −20 to −300 Pa negative pressure. Aggressive flue gases, high temperatures at the connection, and continuous load are the challenge. A ring balance measures here without electronic sensors in the medium and on request delivers the control signal for damper actuation directly.
A
Typical applications
- Draft measurement in industrial-furnace flue ducts
- Furnace pressure control with three-point step controllers
- Differential pressure across heat exchangers and filter assemblies in combustion
- Monitoring of glass melting tanks and smelting furnaces
- Combustion plants and boilers in power generation
B
Why a ring balance fits here
In flue gas with condensates, acid traces, and dust, conventional differential pressure sensors would fail within a short time. The ring balance has an encapsulated measuring element that only contacts the medium through highly flexible pressure connections. The housing sits at a safe distance. Cleaning and purge connections are possible.
C
Technical parameters
D
Recommended products
pure draft indicator in the control cabinet
furnace pressure regulator with built-in three-point step controller, IP65
when the signal runs to the plant control system
when two independent limit contacts are required for damper control
Trusted by
In furnace construction and combustion technology, Rixen instruments are trusted by: Saint-Gobain, Johnson Controls, Bakker & Co., Innovatherm, Supratec. A note from the records: a furnace pressure regulator "Rixotact" built in 1985 was returned for inspection in 2019 — and was within tolerance per the calibration report. That is the result of 34 years of continuous operation in an industrial furnace.
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