New fieldbus concepts take FISCO into zone 2 hazardous area
P.R. Saward · Computing & Control Engineering Journal · 2003
The use of fieldbus in flammable atmospheres has benefited from the recent introduction of FISCO - the fieldbus intrinsic safety concept. FISCO simplifies rules that govern energy storage in field cables, and makes more power available to the fieldbus trunk. The resulting arrangement means that a greater number of fieldbus instruments can be connected in the hazardous area, and users need to spend less time justifying the safety of a given installation.