www.irdbalancing.com Model 941B VIBRATION SENSOR The IRD Model 941B Vibration Sensor is a solid state seismic accelerometer for permanent mounting on machinery. It is designed to withstand harsh industrial environments, including high temperatures, splashing fluids, steam and radiation, and is resistant to the constant splashing of coolant on machine tools. The wide frequency and amplitude ranges of the 941B accommodate most types of rotating machines. The small size of the 941B permits installation near bear-ings and the integral cable eliminates problems often experienced with connectors. A unique clamp mount simplifies installation on a 1.5 inch (38mm) diameter flat spot, using a ¼- 28 machine screw. The clamp mount facilitates re-moval and replacement of the sensor during maintenance operations with-out affecting the performance of the sensor. The 941B has an internal, low-output impedance amplifier capable of transmitting the vibration signal ac-curately over cable up to several thousand feet long, making it ideal for large installations with centralized signal processing equipment. The am-plifier is protected from electrostatic discharge and radio frequency interfer-ence for reliable, trouble-free operation. A DC bias voltage on the output wire permits remote testing of cable continuity and proper operation. Line Drawings: 941B 44.51.75 "22.3.88 "n4.1 TWO CONDUCTOR CABLE WITH SHIELDn.16 "E33341: 15.2 m50 FTE33339: 3 m10 FTE33340: 9.1 m30 FTGROOVE FOR E32585MOUNTING CLAMP KITFLAT SURFACE, NO MOUNTING HOLEn31.8n1.25 "

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