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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