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The danger of dust

Dust collection systems and dust control is common practice in all industries and excellent solutions and procedures are available. However, monitoring the efficiency of dust collection systems and monitoring for unexpected events can save a lot of time, money and headaches.

The Dumo is a compact dust monitoring device developed to continuously measure solid particles in ambient air. High dust concentration in the workplace affects human health. Dust causes problems for machines and can cause low product quality. Dust explosions are environmentally harmful and can cause loss of human life.

The Sintrol Dumo is a monitor to improve worker health and protect industrial equipment. The new DustLog 8 is a data logging system and reporting tool that gives the user greater access to the monitor than ever before. Reports can be generated to see historical trends in the measurement, with the ability to generate monthly, daily or hourly averages charted on graphs.

Additionally, the easy user interface gives the plant full control of the device’s parameters so they can be read, transmitted or configured directly from the control room. After installation of the monitor, almost all access to it can be done remotely, using the DustLog 8. With the new IECEX/Atex-certified instrument, the Dumo can now be used in higher risk areas to detect abnormal levels of potentially explosive dust concentrations.

Dumo monitors total suspended particles (TSP) in ambient air, based on particle charge transfer. Particles interact with a sensor in the device’s sampling channel causing an electrical signal which is detected. Test measurements in the laboratory and in the field showed that Dumo is capable of monitoring dust concentrations below 1 mg/m³ and particle sizes as small as 0.3 micrometres.

Structure and measuring principle

DUMO has an in-built fan to draw ambient air through the measuring chamber producing a steady constant flow. Particulate flowing through the chamber will interact with the sensor rod causing a small electrical charge to pass between the particulate and sensor. The small electric charges provide the signal monitored by the electronics. The generated signal is proportionate to the ambient dust levels.

Domo is easy to commission, easy to use and virtually maintenance free. It can be used in mines, foundries, the wood industry, the cotton processing industry, textile mills, food and tobacco industries, the chemical industry and paper mills.

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