A wide range of explosion proof sensors are now available from Schischek. Manufactured to ATEX94/9/EC, these are suitable for Ex zones 1, 2, 21 and 22 where gases, vapours, mists and dust may be present. Colour coding indicates the appropriate application area to avoid installation errors – ‘Ex’ Sensors for Ex zones 1, 2, 21, 22 (Yellow); ‘Red’, sensors for Ex zones 2, 22 (Red); ‘In’, sensors for safe areas (Green).

According to the company, the devices offer a single package solution which is mounted in the hazardous zone, meaning: no module in the control panel; no intrinsically safe wiring between sensor and transducer/switching module; and no intrinsically safe cable from panel to transducer/switching module.