Gas measuring Instruments have been used traditionally to measure industrial safety regulated by COSHH or other bodies. Worker health and safety was concerned with ensuring that acute exposures to airborne pollutants were controlled. There is now increasing concern about the effects of long term exposure to low concentrations of pollutants.

The PPMonitor system has been designed to give a visual representation of indoor air quality as part of buildings management standards in relation to conditions such as ‘Sick Building Syndrome’. Since a large number of units can be linked using ZigBee wireless mesh networking the system can show precise changes in concentration of selected IAQ parameters in various locations overtime.

The PPMonitor Wireless system enables the user to control several wireless IAQ sampling units all communicating via ZigBee networking. The network is cost effective, easy to install and simple to use: the nodes making up the mesh configure the optimal signal route automatically.

Other advantages of a ZigBee mesh system is its self healing properties which means the network can operate even when a node or connection fails. As a result, a very reliable network is formed. The size of the wireless mesh can be easily extended by simply adding new PPMonitor Wireless units as each one is also a router. Each PPMonitor Wireless unit can monitor 3 to 8 different IAQ parameters. The Manager PC connects to the mesh network via a special node capable of recieving and transmitting

information to the PPMonitor unit. The Manager PC can view, run and control realtime monitoring & data logging of air quality in a bulilding at theclick of a button. ThePPMonitor software enables data to be viewed graphically, produce reports and statistical data, as well as alarm functions and notificationsenabling more effective building management.

Customer Profile

PPM Technology is a leading manufacturer of portable and fixed toxic gas detection instruments. Based in Caernarfon, Wales, UK. PPM technology products are based on a unique electro-chemical sensor used for the detection of airborne formaldehyde, glutaraldehyde and other

pollutants. PPM Technology manufacture a range of instruments for detecting and analysing other common gases which are monitored in constructing an Indoor air quality profile (IAQ) for building management and similar situations.

Featured Product

The ETRX-2 module

The Telegesis ETRX2 module used by PPM technology is a low power, 2.4GHz ISM band transceiver, based on the Ember EM250 single chip ZigBee / IEEE 802.15.4 solution. The module's unique AT-style command line interface allows a user to quickly integrate meshing radio technology into a design without complex software engineering making it ideal for organisations which need to build a wireless

capability in to their products.