RS-232 1 : An EIA standard which specifies the electrical, mechanical, and functional characteristics for serial communications. Used in point-to-point applications
EESiFlo North America, Terminology and Glossary: Explosion Proof & Hazardous Areas, Pennsylvania, USA 2002, flowmeterdirectory.com/flowmeter_terminology, (Mrtm/ Explo Proof and Haz Areas - Amer) {561}