LVS-101 / LVS-201
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Catalog excerpts

LVS-101 / LVS-201 - 1

Linearized Velocity Sensor LVS-101 (Horizontal) / LVS-201 (Vertical) Monitoring solution Frequency response down to 0.5Hz Built-in linearization micro-electronics circuit for low fre- Shaft & bearing vibration absolute quency amplitude and phase compensation • Models for horizontal and vertical mounting positon Stainless steel body Dynamic signal carried on DC bias voltage Push-Pull Connector or integral cable Typical applications Hydrogenerators Pumps, fan, cooling towers... Gas & steam turbines DESCRIPTION The LVS-101 and LVS-201 velocity sensors have been designed for low frequency vibration monitoring applications of rotating machines. More specifically, the sensors fulfil the special low frequency requirements of very low speed hydroelectric machines. The LVS sensors operate in accordance with the electrodynamic principle and are used for measuring the bearing absolute vibration of the machines. The sensing element of the sensor is a coil supported by high precision springs moving around a permanent magnet which produces a voltage directly proportional to the vibration velocity. By design, the sensor has an excellent sensitivity and linearity down to very low vibration levels. The built-in electronics allows the sensor to accurately monitor vibration frequency down to 0.5Hz. Horizontal and vertical model of sensors are available, for omnidirectional sensor see LVS-301. The sensor provides two voltage outputs proportional to the vibration velocity : • A raw output corresponding to buffered non-linearized signal • Low frequency compensated dynamic vibration velocity signal for monitoring purposes down to 0.5 Hz and signal analysis The sensor can be powered with +24VDC or -24VDC depending on the ordered version. The sensor can be wired by push-pull connector (C3), so the extension cable can be detached during installation. Or by integral cable (C1).

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LVS-101 / LVS-201 - 2

mcmonitoring MC-monitoring SA LVS-101 201 Datasheet GLOBAL SPECIFICATIONS OPERATION Sensitivity Transverse sensitivity Maximum displacement Natural frequency Resonance Frequency Output Impedance Output bias voltage Output bias voltage tolerance Maximum output voltage Temperature coefficient Typical frequency response at 2mm/s Analog band pass filter Power Voltage Current consumption 100mV/mm/s ±5% < 7% max. of nominal 3mm peak-peak 8Hz typ. >1.2kHz Linearized Raw 100Q + 12V or +6V for +24VDC / -12V or -6V for -24VDC ±5% of bias voltage 10V peak for 12V bias / 5V peak for 6V bias 0.1%/°C...

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LVS-101 / LVS-201 - 3

MECHANICAL DRAWING

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LVS-101 / LVS-201 - 4

Ordering code X - mounting position 1 Horizontal (LVS-101) 2 Vertical (LVS-201) 3 Omni (See LVS-301) 05.X01.008 C Y L C - Cable Options 1 Integral cable 3 Push-pull connector L - extension cable length 5m 10m Part Ordering code Temporary mounting magnet : See PMH-140 25.14°.681 MC-monitoring Quality certifications LOCAL REPRESENTATIVE MC-monitoring SA Route Andre Piller 19 CH-1762 Givisiez | Switzerland Phone : +41 58 411 54 00 Mail : info@mc-monitoring.com

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