Line of 4-20 mA vibration transmitters with intrinsic safety certifications for monitoring critical machines complies with ATEX and CSA North American standards and is used to monitor critical rotating machinery in refineries, grain processing facilities, or mines where hazardous gases or dust may be present. Loop-powered devices can interface with existing plant monitoring equipment such as PLC, DCS, or SCADA systems. Features include hermetic sealing, frequency response from 180 to 600,000 cpm (2 to 10 kHZ), stainless-steel construction, 1/4-28 or M6 mounting hardware, and temperature range of -40 to 185 8F (-40 to 85 8C). www.imi-sensors.com IMI Sensors Div., PCB Piezotronics Inc.