The Insitec D is ATEX approved on-line particle size analyzer. ATEX approved category 3 instruments for use in Zone 22 areas. For flammable dusts. Real-time particle size analyzer based on laser diffraction for particles in the size range 0.1 to 1000 µm. Automatic continuous on-line operation, or manual at-line. Designed to meet industrial requirements for ATEX approved equipment, the Insitec D has been designed in accordance with the latest international standard for electrical equipment in dust environments – IEC 61241.