Using a Dust Monitor to Diagnose Potential Problems

Most fabric dust collectors clean their filter bags by injecting a short blast of compressed air down a singe row of bags. This is repeated until every row of bags is cleaned, or until the desired level of differential pressure is achieved. The cleaning sequence is usually by a timer or a differential pressure gauge. […]

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How Are Dust Collector Systems Monitored?

Operator Visual Checks Looking at stacks and vents and identifying dust emissions is extremely time consuming, inaccurate and probably too late. When a dust collector starts to leak small amounts of dust, it is impossible to detect with the human eye. If the sky is overcast or it is raining, it becomes even more difficult […]

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TunnelTech 305 Series – NEW Single Point Air Flow Monitor – Coming Soon!

Codel International’s new TunnelTech 305 Series designed exclusively for road and rail tunnel applications is an essential part of any road or rail tunnel safety system. The TunnelTech 305 not only monitors the air flow measurement inside the tunnel it also monitors the direction of the air flow. This ensures that the tunnel ventilation system […]

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Dust Monitoring – Choosing the Right Technology

There are several technologies available to monitor dust emitted from collectors. The traditional ones are based on optical systems. However, sensitivity limitations of optical systems have produced an increased use in tribo-electric probes in modern plant. Opacity Monitors These instruments must be used when the required measurement is opacity and are the preferred option for […]

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Air Flow Monitors in Tunnels

In most tunnels there are ventilation systems installed of which there are three main types: Longitudinal ventilation Cross ventilation Longitudinal & Cross ventilation   Depending on the conditions and the situations encountered in a tunnel, different air speeds and direction are applied and validated by the anemometer. The measurement of the anemometer is then used […]

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Monitoring Emissions from Dust Collectors

Continuous Dust Monitor Various instruments are available using different technologies to continuously monitor the emissions from a stack. Some instruments are sensitive enough to detect pin-hole leaks and have an alarm contact to activate an annunciator or a flashing alarm light at a set-point, when leaks occur. Other advanced instruments also have an output to […]

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How well are you controlling your NO2 in your Road Tunnel?

NO2 Control in Road Tunnels The need to minimise NO2 exposure in road tunnels has been inhibited by the lack of suitable, low-maintenance sensors for measuring ppb levels of NO2. Recent improvements in technology have resulted in the introduction of not one but two competing techniques designed specifically for this application, making the possible control […]

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