Works on In-situ methodology. Continuous SPM Monitoring System is designed & built on Tribo-electric Effect. This is a phenomenon which occurs when moving solid particulate matters comes into contact with the sensor. This phenomenon being essentially molecular, the process is very repeatable. This method of sensing yields very accurate and highly reliable results, since the signal generated is directly proportional to the mass flow rate. In fact Tribo-electric technology is the only one available around the world which senses solid flows directly. Radioactive, laser and optical methods are indirect as they are based on the principles of absorption of one or the other form of energy.

The SPMMS-C91 range of Dust Monitors uses Tribo-electric technology – DC sensor.This type is fundamental sensor of mass flow and can be calibrated directly in units of gm/sec or kg/hr. DC sensors have a linear response to mass flow over a wide range of gas velocities.These devices provide a simple low-cost mass flow measurement that, unlike mass concentration measurement, requires no further normalization to deliver an absolute measurement of environmental impact. Signal Generation is proportional to mass flow of solids / solid particulate matter across the sensor.

Mass flow, however, is an absolute standard. It provides a measurement of total mass emission from a source and used as a direct assessment of environmental impact. It is valid for any type of process, combustion or non-combustion and may be considered as being the most relevant reporting method.

The DC Tribo-electric probes system is proportional to mass flow. The probe is linearly proportional to mass flow and thus offers a simple low-cost solution to dust emission monitoring, by providing a direct measurement of the environmental impact of any emission source.