Many dust monitors are designed for permanent installation, but the portability that has been a key design of these instruments makes them ideal for field applications
Quantitech is exclusive UK distributor for Grimm Aerosol Technik, for over 20 years a leading supplier of particle monitoring equipment.
A wide choice of portable and fixed options covers particles from 5nm to 20um in size.
Many commercially available dust monitors are designed for permanent installation, but the portability that has been a key design requirement of the Grimm instruments makes them ideal for field applications.
The 1100 series is said to be the world's smallest battery powered portable occupational dust monitors.
Different models in the 1100 series use patented laser and filter based technologies to measure and display inhalable, thoracic and alveolic respirable dust values or size/mass distribution data.
Results can be logged locally on data storage cards (up to 64Mb) or downloaded to PC. For ultra-fine particles (aerosols) the condensation particle counter (CPC) range can detect particles as small as 5nm in diameter.
The N-butyl alcohol vapour used to render the particles detectable is supplied from an integral spill-proof reservoir, again with the objective of true portability.
These particle counters can be coupled with a Grimm electrostatic classifier (DMA) to provide a complete counter and particle size spectrometer system.
Working on the sequential sizing principle, three DMA models handle size distributions from 5nm to 875nm. According to Chris Tyrell, Quantitech's product specialist: "This range offers a genuine European manufactured alternative to American products, with real technical advantages and very attractive prices."
