Key Features of Carbon Sensor And Indicator

• IN-SITU measurement technique virtually eliminates maintenance as normally required in extraction type of systems [Dew Point, CO2, etc.]. Further errors due to equilibrium shift encountered while sample cooling, leakages, etc., are totally eliminated.
• A Precise and rapid measure of the atmosphere conditions can be obtained in the process in proximity to the work load and at the process temperature. A measurement accuracy of +/- 0.05% C & a response time of less than 1 second permit simple control systems to be used. Distance between the probe location & instrument location is not a limitation as compared to sampling systems where increasing distance increases response time.
• Carbon sensor control systems enable greatly enhanced quality control to be achieved in carburising, carbo-nitriding, neutral hardening, etc. It is estimated that carbon potential control to at least +/- 0.05% C can be repeatedly obtained throughout the sensor life.
• The system accuracy is maintained throughout the sensor life. Simple calibration procedure and in-built checks in the system enable to monitor probe health.
• The carbon sensors are repairable and its peak efficiency can be maintained through refurbishing/reconditioning periodically.
• Reduced reworks results in increased furnace availability, faster furnace reconditioning and more rapid recovery to control following furnace loading, with carbon sensor control.
• Improved atmosphere control can be obtained by the use of the dedicated time proportional / 3 term controllers, for each measurement point - and at no greater cost than for conventional multipoint systems. Furthermore the system can readily be linked to a programme controller to facilitate the selection & control of a variety of pre-determined boost / diffuse carburize / diffuse or boost / soak cycles.
• The more efficient utilization of endo-thermic gas, enrichment gas, etc. results in appreciable energy savings.
• Carbon sensor control systems can be applied for the measurement / control of nitrogen based and other types of furnace reacted atmospheres; when conventional instruments [eg. CO measurement] are inadequate.
• In a multipoint CO2 / Dew point system, any problem with analyzer results in total shut down of all the analysis points, corresponding point gets affected in case of problem with carbon sensor.