Digital Measurement; Signal Processing - SKF Multilog IMx-S Series User Manual

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Simultaneous sampling of different channels with different sampling rates
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Frequency range: from DC to 40 kHz
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Dynamic range: 120 dB
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Signal to noise ratio: 90 dB
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Cross-talk rejection: 100 dB
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Accuracy amplitude: ±2% (up to 20 kHz), ±5% (20 to 40 kHz)
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Accuracy phase: ±3° (up to 100 Hz)

Digital Measurement

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Frequency range: 0,1 Hz to 20 kHz (I/O board v1.24 and later, DIP21-switch with 6
positions)
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Frequency range: 0,1 Hz to 12,5 kHz (I/O board older versions, DIP21-switch with 4
positions)
–
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Accuracy frequency: 0,05% of measurement value (typically 0,01% up to 2,5 kHz)
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Pulse counting

Signal Processing

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Time waveform
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Vector analysis with circular alarms
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FFT: 100 to 6 400 lines
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SKF's four enveloping bands
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Integration/Differentiation in frequency domain
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Window function: Hanning
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Customer formulated mathematical equations
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Dynamic alarm levels, active range determined on multiple parameters
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Data storage on time, event or alarm condition
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Data buffering in flash memory when communication link is down
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Detection of sensor and cable fault
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Watchdog and self-testing
SKF Multilog On-Line System IMx-S
User Manual – Revision S
Required pulse width: > 4 s for electrical positive
> 40 s for electrical negative
Technical Data
Digital Measurement
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