Health & Safety 37
Image 3: The PPMonitor Software shows the collected data in real-time displayed in a graphical format
soon after exposure. The immediate ones are usually short-term and treatable such as eye, skin, nose, and throat irritation, headaches, dizziness and fatigue.
Long-term exposure to pollutant levels could have an affect on an individual’s health in future years, these can be severely debilitating or become fatal illnesses, including some respiratory diseases, heart disease, and cancer.
The Wireless IAQ Profile Monitor uses the low-power, high- performance Zigbee wireless mesh network to communicate. A large number of units can be linked using this mesh networking; the system can show precise changes in concentration of selected IAQ parameters in various locations over time.
The collected data is presented on the controller PC in real- time. The graphical display enables the user to identify trends and patterns in the sampling; simple user interfaces enable easy operation of the software. The user can monitor and control each individual unit and sensor using the software. It is possible to create monitoring schedules using the software, which is ideal if monitoring only needs to take place for a set period of time (for example, during work hours only).
The software can set limits for temperature, humidity, and concentrations of hazardous gases, which when exceeded can activate and control the air-conditioning and ventilation systems. It can also turn heating on and off, and as a last resort trigger building alarms. The alarm can be triggered to give a warning that the gas concentration level has reached a non- critical but concerning level. A further alarm can give a more severe warning when this occurs.
An example of a ‘multi-parameter’ monitoring system recently supplied by PPM Technology was for the ‘Secure Living’ initiative based in Bolzano, Italy. The initiative aims to improve the quality of life of older citizens in the city of Bolzano, Italy. Allowing them greater independence and integration into society. This has been achieved through the introduction of a new system of remote monitoring and tele-assistance for people who need home care.
PPM Technology’s wireless monitoring units were placed in a number of locations where vulnerable individuals live. The data is collected in real time and is analysed in the control room; if the data indicates immediate danger of any form, a dedicated team from Bolzano's Department of Social Services can be alerted and will take action if necessary.
Image 4: Forklift Trucks are commonly used indoors in manufacturing and warehouse facilities, they can emit potentially dangerous levels of Carbon Monoxide
The monitoring units supplied contained sensors for a number of parameters including temperature, humidity, carbon monoxide, carbon dioxide, natural gas - methane, smoke and water level. Monitoring of these parameters help ensure that vulnerable individuals are safe from over-exposure to the hazardous gases, and enable optimum indoor environment conditions to ensure the health, safety and well-being of the occupants and also to safe-guard property.
A wireless IAQ sensor network has the ability for detailed monitoring in inaccessible locations where a wired infrastructure is not viable or possible. A building-wide network of monitoring units can be achieved, ensuring a more detailed representation of IAQ in general.
Continuous monitoring of IAQ enables a profile of the indoor air environment to be created, analysis of the recorded data through dedicated software allows for more efficient resource and energy management. The software can be used as an analytical tool to identify trends and rectify problem areas— leading to a better indoor environment and safer, more comfortable working conditions.
Indoor Air Quality CO2 Monitor is Fast and Easy to Use
The Geotech (UK) G150 carbon dioxide (CO2) analyser has the accuracy essential for Indoor Air Quality
(IAQ) measurements in very low CO2 concentrations of 0-10,000ppm. This level of accuracy is vitally important
when checking, for example, sick building syndrome.
Newly designed and engineered, the G150 has options for oxygen (O2), temperature, humidity and PC/Internet
hook up. Checking IAQ CO2 levels is simple. Users just switch on the G150 and view the crystal-clear screen.
With backlight on its easy-to-read screen, the Geotech G150 is a replacement the earlier Geotech CD98 analyser. Geotech has developed the G150 from 30- years of experience and customer-focused research.
Reader Reply Card No. 113 Reader Reply Card No. 114
IET May / June 2011
www.envirotech-online.com
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