THE new GEO-alpha from Kanomax has the ability to to measure and monitor simultaneously, particle concentration, relative humidity, temperature and air velocity, in a single instrument.
Available from TestEquip , this is claimed to be the first instrument in the world to measure and monitor all four parameters.
The light source is a laser diode and can measure particle sizes from as little as 0.3 micron to 5 micron at a flow rate of 2.83 litres/min.
Five hundred readings can be data logged and stored with control by an external computer. With a weight of only 980 gram this instrument can also be fitted to a tripod to allow longer term monitoring.