New: C_xH_y and H₂ sensors for the Wöhler A 550 INDUSTRIAL – see more than the standard

Wöhler expands the capabilities of its Wöhler A 550 INDUSTRIAL with two important new sensor options: C_xH_y for unburned hydrocarbons and H₂ for hydrogen in exhaust gases. The new sensors give users a clearer picture of combustion and emissions processes and support more reliable decisions in demanding industrial applications.

The Wöhler A 550 INDUSTRIAL is designed for flue gas analysis in power stations, industrial furnaces and similar environments. Built for harsh operating conditions, the analyser can operate with up to five sensors simultaneously. O₂ and CO are always included, while additional sensors can be selected as required, including NO, NO₂, SO₂, CO₂ NDIR, H₂S, C_xH_y and H₂. This flexibility allows the instrument to be configured for a broad range of industrial measurement tasks.

The analyser offers a robust hardware concept for challenging applications. A high-temperature probe up to 1,200 °C, extendable from 1 m to 2 m and fitted with a stainless steel sintered filter, protects the sensors even under heavy dust loads. For highly accurate NO_x and SO_x measurements, an optional battery-powered Peltier cooler removes condensate efficiently. A powerful pump allows fast, representative sampling at negative pressures up to 300 mbar, while a dual-port digital pressure sensor supports measurement of flue gas velocity and flow rate.

The new C_xH_y NDIR sensor (0…50,000 ppm), calibrated for methane, makes it possible to directly measure unburned hydrocarbons in the exhaust gas. This is particularly relevant in thermal after-combustion systems, VOC/HC purification, combined heat and power plants, gas engines, and industrial furnaces, drying systems or process heat applications using natural gas, biogas or special fuels. By identifying unburned hydrocarbons directly, users can immediately see whether significant HC emissions are present, verify compliance with after-combustion and VOC/HC limits, and optimise burners and engines based on more complete measurement data.

The new H₂ sensor (0…50,000 ppm) provides direct detection of hydrogen in exhaust gases. This is especially valuable in applications involving biogas, anaerobic gas, landfill gas, process gases and hydrogen blends. Typical examples include CHP plants, boilers, gasification systems, H₂-ready plants and development test benches with changing gas compositions. Measuring hydrogen directly helps users determine whether elevated CO values are genuine or influenced by hydrogen. This creates a more reliable basis for emissions reporting, supports communication with authorities and helps avoid unnecessary action resulting from misinterpreted readings.

Despite its industrial performance, the Wöhler A 550 INDUSTRIAL is designed for practical use on site. A bright 7-inch touchscreen ensures clear readability and intuitive operation. Magnets on the housing allow hands-free attachment to magnetic surfaces, and at just 1.25 kg, the analyser is easy to handle. A start/stop button on the probe simplifies measurement during operation. The device stores up to 1,000 records and supports data transfer via USB, infrared and WLAN. The Wöhler Report App also enables the quick and structured documentation of measurement results and field assignments directly on site, as well as the automatic generation, export and sharing of professional reports. On-site printing is possible with the Wöhler TD 200 thermal printer.