High-precision instruments for air quality monitoring, particle measurement, and environmental analysis – built for reliability, accuracy, and compliance.
The ETG 6500 is a fixed analyser for continuous monitoring of biogas, syngas and biomethane, built around NDIR and electrochemical sensing rather than a single-technology approach. It reads methane, carbon dioxide, hydrogen sulphide, oxygen and — depending on configuration — several other compounds, and it comes in both wall-mounted and 19-inch rack versions so it fits whichever control-room or cabinet layout a plant already runs.
Biogas plants use the ETG 6500 to track biodigester production and desulphurisation performance, where a corrosive H2S spike or a methane drop both threaten plant output or safety. In biomethane upgrading, ETG Risorse states the analyser measures CH4 and CO2 concentrations up to 100% and detects H2S down to a few ppm, which covers both the residual-methane check on the offgas stream and the purity check needed before grid injection. In syngas production, the same platform tracks the carbon monoxide, hydrogen and carbon dioxide balance that determines gasification efficiency and safety.
Biogas and anaerobic digestion plant operators; biomethane upgrading facilities preparing gas for grid injection or liquefaction; and syngas producers running gasification or combustion processes who need continuous rather than periodic composition data.
The core measurement runs on NDIR (non-dispersive infrared) sensing combined with electrochemical detection, according to the ETG 6500 product page — though ETG's own biomethane application page separately describes the same analyser using "NDIR and NDUV sensors" for CH4, CO2 and H2S. We'd confirm the exact sensor combination with ETG before publishing, since it affects how the instrument should be tagged for measurement principle. Sample can be drawn from more than one point in the plant, with optional pre-treatment — a chiller to strip condensate, or an air conditioner to protect electronics in harsh climates — added where site conditions call for it.
Note on source: ETG's full datasheet is gated behind a lead-capture form on the product page and couldn't be retrieved for this draft. The table below reflects only what's stated in the product and application page text — it doesn't include dimensions, weight, power requirements, response time, warm-up time, or certifications, none of which are published anywhere accessible. Recommend requesting the datasheet directly from ETG (or downloading it via the form) before this page goes live, so a complete specification table can be added.
Can the ETG 6500 measure more than CH4, CO2, H2S and O2?
Yes — ETG configures the analyser to the customer's own compound list, and mentions H2 among the "many others" it can be set up to measure.
Can one unit monitor several points in the same plant?
Yes — the ETG 6500 supports multi-point sampling, which is how it's used to check both biodigester production and desulphurisation efficiency from one installation.
Does it need special protection in harsh outdoor conditions?
The stainless steel enclosure handles general weather and corrosion; an optional air conditioner is available specifically to protect the electronics in unusually hostile climates, and a chiller option removes condensate from the sample if needed.
How is the H2S sensor kept from wearing out?
Through ETG's own cell-cleaning cycle, which the manufacturer positions as extending electrochemical cell life and reducing maintenance cost compared with an uncleaned cell.
Can we operate it without staff permanently on site?
Yes — it's remote-controllable over LAN and WLAN, with ETG offering internet-based technical support directly.
Does it hold any specific certifications?
Not stated on the manufacturer's page — worth confirming with ETG directly if a specific certification or hazardous-area rating is required for your installation.
How do we get exact specifications and pricing?
Contact our specialists — we'll get the full datasheet from ETG directly along with a quotation for your application.
AAVOS distributes the ETG Risorse range across Belgium, the Netherlands and Luxembourg, handling advice, installation, commissioning, calibration and technical support locally rather than routing every question to ETG's head office in Italy. For a biogas or biomethane installation where the H2S cell-cleaning cycle and sample-conditioning options need matching to your actual plant conditions, having that conversation with a Benelux engineer before ordering avoids surprises after delivery.
Contact our specialists for a full specification sheet and a quotation matched to your plant's compound list and sampling points, or submit a support request if you're already running an ETG 6500.
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