Measuring instruments for landfill and biological gas Here you will find an overview of the measuring instruments for landfill and biogas. Starting with stationary measuring instruments for monitoring the composition and volume of biogas, through combined safety gas warning and measuring devices, to multiple gas measuring device with infrared sensors.

Multitec 540 and Multitec 545 Biological processes generate gas compositions that make special demands on measuring equipment. The robust Multitec® 540 provides the ability to measure six gases simultaneously. The use of infrared measuring techniques for methane and carbon dioxide means that there is no possibility of misleading results due to interaction with other gases. This makes it ideal for use in waste disposal sites, sewage plants and biogas plants. A large display allows all parameters to be displayed simultaneously and quickly read from a single screen. Measurement data is stored in log files and can be transferred without difficulty to a PC over a USB link.

With the Multitec 545, up to five gases can be measured simultaneously. The very high H2S concentrations in wastewater treatment plants and palm oil factories, for example, place special demands on the measuring instrument. • Intuitive, menu-driven user interface with jog dial and function keys • Large transfected display, very good readability in direct sunlight • Selective infrared sensors for hydrocarbons and carbon dioxide • EC sensor for hydrogen sulphide with wide measuring range (5000 ppm) - Multitec 545 only • Highly durable electrochemical sensors for oxygen and toxic gases • Power supplied by four replaceable AA-size rechargeable batteries or disposable batteries • Minimum seven hour battery life in operation, rapid charging in four hours • Explosion protection: TÜV 07 ATEX 553353 X, II2G Ex d e ib IIB T4 Gb, IIC when used with the TG8 carrying bag • PC communication via USB port • Supporting bracket for carrying and positioning • Low weight (1,000 g) for maximum carrying ease.

Multitec 560

Combined gas warning and measuring device for monitoring processes and personal safety at landfill sites, sewage treatment facilities and biogas plants

The Multitec® 560 is a combined gas warning and measuring device. When used as a gas warning instrument it reliably and automatically detects gases which are toxic and hazardous to humans. When used as a gas measuring device it records and documents the composition of biological process gases.

The intelligent operator guidance optimally supports the user in his work. For example, the device prevents switching between measuring ranges at critical gas concentrations, thus ensuring maximum safety – for humans and equipment.


The Multitec® 560 is ideal for the preventative inspection of the atmosphere in work areas (e.g. engine pits, silage tanks, shaft constructions). It reliably detects explosive and toxic gases to ensure safety at work at all times.

It is essential to record and analyse the gas composition and optimise processes for the profit-oriented production of biogas. The Multitec® 560 is perfect for these tasks as it uses high-quality infrared measuring technology.


• Innovative operating concept with jog dial, menu navigation and function keys • Large transflective, i.e. semi-transparent display, excellent readability, even in direct sunlight • Selective infrared sensors for methane and carbon dioxide • Highly durable electrochemical sensors for oxygen and toxic gases • Explosion protection: II2G Ex d e ib IIB T4 Gb / II2G Ex d e ib IIC T4 Gb with TG8 carrying bag • EC type-examination certificate: TÜV 07 ATEX 553353 X • Measuring function: BVS 09 ATEX G 001 X, PFG 08 G 002 X (applies to ExTox warning application for CH4, CO2, O2, CO, H2S) • Minimum eight hour battery life in use, rapid charging in four hours

Bio Control 2 and Bio Control 4 & 8

Switch to automated process optimisation and control

The Multitec® BioControl is a unique measuring system comprising a fixed stationary unit and a mobile gas measuring device. It is used in small to medium-sized biogas plants, landfills, wastewater treatment plants and composting plants. The stationary BioControl 2 automatically monitors and records the gas quality continuously and conveniently at a maximum of 2,4,8 measurement locations. The mobile gas measuring device, either the Multitec® 540 or the Multitec® 545, can also be used to manually calculate measurement values anywhere in a plant. Simply remove it from its docking station and connect it to a measurement location. When it is replaced in the docking station, the protocols are sent to the BioControl 2 and displayed.

With its two fixed measurement inputs, the BioControl 2 meets all the main measuring demands of small to medium-sized plants. For example, it can continuously and reliably monitor the gas quality at the motor and the raw gas composition. The user can individually configure the BioControl 2 to the relevant area of application and demands. The measurement locations and cycles, save intervals, limits and alarm thresholds can be customised according to the application. The BioControl 2 is non-wearing and low maintenance. It is calibrated and adjusted automatically with test gas (optional). The Multitec® 540 / Multitec® 545 can be easily removed from the docking station and easily posted or transported for servicing.

The high-quality BioControl 4 or BioControl 8 base station offers extensive and varied measuring options. Developed specifically to meet the requirements of medium-sized to large plants, it stands for process and profit optimisation, maximum reliability and individual flexibility. This premium model is recommended for plant manufacturers with the highest technological demands.

The Multitec® BioControl system is user-friendly and can be customised to the operator's needs; it also offers all the necessary standard functions and a high level of safety. The combination of stationary base unit and mobile gas measuring device thus offers a cost-effective and easy switch to automated process optimisation and control.

Advantages of the Multitec® BioControl system

• Large, state-of-the-art 4.3" colour touchscreen: easy user-defined settings, language selection • Flexible configuration to individual requirements: measurement locations/cylces, save intervals, limits, alarm thresholds • User settings can be restored from first day of use (saved on USB stick) • Safe, reliable measuring results thanks to self-tests during operation • Sturdy and durable: all relevant components resistant to aggressive gases • Autonomous and regular saving of all measurement values and settings on USB stick; no data loss, no manual protocols, seamless documentation • Comprehensive service: stationary unit largely maintenance-free; fast, first-class support thanks to customer-friendly remote maintenance and diagnostics – anywhere in the world by internet; simple automatic calibration and adjustment using test gas (optional)