The CEN Series wireless gas detection and control panel uses pneumatic sampling to bring gas from each sensing location back to the central panel. The advantage of pneumatic sampling systems is the ability to filter the air stream at both the sensing location and at the panel to remove suspended particulate and other solid contaminants. The filtration process keeps the sensors clean and extends their lifespan, improving performance and saving money for the building operator. Since one sensor for each gas can be shared among multiple sampling locations, lower servicing costs result since fewer sensors are replaced at service intervals when compared with purely electronic gas detection systems.
This NO2 wireless gas detection system is designed for space sampling, installation in dirty indoor environments where a simple, wall mounted NO2 transmitter will not stand up to the environment and be damaged or contaminated. Acme uses an air pump to draw the sample to the wireless gas detection unit from the space, where it is filtered and passed to a solid-state electrochemical NO2 analyzer. Available outputs range from a 4-20 mA signal or 4 contact levels in our single-point unit, up to zone and multiple fan control in our larger panels. These systems are especially useful in heavy industrial or Diesel-powered vehicle environments where wall-mounted NO2 detectors face the risk of and abuse.
For CO2 wireless gas detection, each point location shall be sampled sequentially according to the CPU. The dwell time per point shall be fixed at 90 seconds. At the end of each dwell time the CPU shall acquire an up-dated CO2 reading for that point from the infrared CO2 analyzer. For CO wireless gas detection, all points shall be sampled simultaneously.
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