• Its are applications used in pharmaceuticals to chemical industries; reactors and centrifuge systems play a critical role in mixing or separating flammable solvents, slurries and highly combustible powders.
• Such combination of ingredients raise the possibility of flash fire and explosions within the systems. The amount of heat or the electrostatic discharge generated by the rotating equipment, is all that is needed to ignite the mixture, which at a presence of oxygen more than 4 per cent can lead to a dangerous explosion.
• To ensure plant and operator safety, it is highly essential to control the amount of oxygen that can intrude into the reactor or centrifuge. The chemically resistant oxygen sensor (electrochemical sensor) is normally placed on the vent of the centrifuge, where the O2 content of the exhaust airstream is constantly measured.
• Whenever the oxygen content exceeds the LOC, the nitrogen valve is automatically opened and the inert gas in purged into the system till the oxygen content comes below 4 per cent. To compensate for air ingress via leaks, oxygen analyzers are used to control the Nitrogen injection. 
• The analyzer incorporates an easy-to-read LED display of measured oxygen content. The IP66 Flameproof enclosure makes the analyzer suitable to be used in hazardous areas. The 4-20mA output of the analyzer can be used for PLC/DCS purpose. The relay output of the analyzer can be used for automatically activating buzzer cum flasher and Nitrogen valve.
• These benefits are accurate and reliable measurement: ± 2% accuracy; easy installation – with direct/remote sensor connecting facility; sensor resistant to organic solvent vapours, chemicals and moisture; performance unaffected by background solvent gases. Inbuilt buzzer cum flasher for alert signals.
• It automatically operates the Nitrogen inlet valve. Intrinsically safe with IP 66 flame proof enclosure. It has a gas calibration kit & R-485 communication port for further processing and monitoring on PC based configurable software.