A major Scandinavian producer of Biogas has selected Michell Instruments’ XTP601 oxygen analyzers to monitor O2 levels for safety and quality at two sites in Sweden.
The XTP601 Oxygen Analyzer is used to continuously provide readings of the levels of O2 in the process. In general, the lower level of oxygen in these applications should be no more than 0.5%, with a danger level of 4%. The XTP601 has alarms to shut down the plant if oxygen levels approach the danger level to ensure safety.
One plant produces biogas from sewage and while the other uses food and garden waste, however the biogas from both plants is used as a transport fuel. Despite the different feedstocks, the process of upgrading the gas for use is the same. The biogas must be upgraded to 95% methane, which will give it a high enough calorific value to produce the energy required for transport fuel. It will also make it highly flammable – which is why it is important to keep levels of oxygen low during the process. The XTP601 provides stable, accurate readings and is capable of measuring oxygen from 0-1% up to 0-50% as well as suppressed zero ranges, such as 90-100%.
There are three options for configuration: a transmitter; a transmitter with status LEDs or a full display version. All of these options may be rated for either safe or hazardous area use, with hazardous area classifications available for ATEX, IECEx and CCSAUS. The full display version of the XTP601 has a touch screen interface to enable easy operation without needing to remove the lid. This means that users can calibrate, change settings and interrogate the instrument in the hazardous area without the need for a ‘hot permit’ or permission to carry out work. Menus allow easy access to information on oxygen concentration; analyzer status; a graph showing oxygen trends over a user-defined time period; alarm history; minimum and maximum concentrations and other parameters to aid diagnosis of plant conditions.
About Michell Instruments
Michell Instruments Group is a worldwide leader in the field of moisture and humidity measurement solutions. With almost four decades experience, Michell designs and manufactures a wide range of sensors, instruments and customized systems capable of measuring dew-point, humidity and oxygen in applications and industries as diverse as compressed air, power generation, petrochemical, oil and gas, food processing and pharmaceutical. Michell’s innovative products make processes cheaper, cleaner, more energy efficient and safe.
The Group has multiple manufacturing locations across Europe with their international headquarters located in Ely, UK and a North America sales and service headquarters located in Rowley (MA). It has its own facilities in 10 countries with an extensive network of factory trained application and service engineers, subsidiaries and distributors stretching across 56 countries.