Non-dispersive infrared sensors from Edinburgh Sensors

A gas such as sulphur hexafluoride (SF6) is a very potent greenhouse gas and therefore leaks to the environment must be minimised. Inorganic, colourless and odourless, it does, however, absorb strongly in the infrared, so NDIR sensors of the type described above are well suited for detection at very low ppm concentrations of this and other important gases.

NDIR technology has now been widely accepted and standardised by gas sensor manufacturers worldwide, and the company's diverse range of robust OEM Gas Sensors and Gas Monitors enables fast, reliable and continuous gas detection, which has given Edinburgh Sensors a global reputation for accuracy, safety and reliability. Applications are many, and include horticulture, brewing, agriculture, process control, biogas, personal safety and indoor air quality.

Edinburgh Sensors' Guardian NG NDIR gas monitors typify the company's commitment to customer convenience and safety, backed by over 30 years of sensor design and manufacturing experience. They are wall-mounted and easy to install, detecting gases from sampling points up to 30m away, using the built-in sampling system. Monitors are housed in robust plastic IP54-rated enclosures to prevent the ingress of particulates and water, and have an integral LCD display with digital alarm set-point controls and password protection to prevent accidental or deliberate change of settings.

The Guardian NG infrared gas monitors provide near-analyser quality, offering continuous sampling, measurement and display of target gas concentrations for either CO2 or CH4 gases, where detection level ranges of between 0-3000 ppm and 0-100 per cent by volume are required. Data can be easily transferred via an on board RS232 I/F with optional Ethernet I/F and relay outputs for control of external devices. Graphical display of historic readings is also possible over a period defined by the user.

The Guardian NG DC infrared gas monitor also offers near-analyser quality continuous sampling, measurement and display of CO2 concentrations between 0-3000 ppm by volume but from low-voltage DC (18-30V) supplies. Like the AC Guardian NG these monitors offer long-term stability plus low maintenance; all part of Edinburgh Sensors' commitment to its customers that has helped make the company a leader in the field of gas sensing.

For more information about non-dispersive infrared (NDIR) sensors please visit www.edinburghsensors.com.