Technical Data
Digital Measurement
SKF Multilog On-Line System IMx-S 6 - 3
User Manual – Revision S
• Simultaneous sampling of different channels with different sampling rates
• Frequency range: from DC to 40 kHz
• Dynamic range: 120 dB
• Signal to noise ratio: 90 dB
• Cross-talk rejection: 100 dB
• Accuracy amplitude: ±2% (up to 20 kHz), ±5% (20 to 40 kHz)
• Accuracy phase: ±3° (up to 100 Hz)
Digital Measurement
• Frequency range: 0,1 Hz to 20 kHz (I/O board v1.24 and later, DIP21-switch with 6
positions)
• Frequency range: 0,1 Hz to 12,5 kHz (I/O board older versions, DIP21-switch with 4
positions)
– Required pulse width: > 4 s for electrical positive
> 40 s for electrical negative
• Accuracy frequency: 0,05% of measurement value (typically 0,01% up to 2,5 kHz)
• Pulse counting
Signal Processing
• Time waveform
• Vector analysis with circular alarms
• FFT: 100 to 6 400 lines
• SKF's four enveloping bands
• Integration/Differentiation in frequency domain
• Window function: Hanning
• Customer formulated mathematical equations
• Dynamic alarm levels, active range determined on multiple parameters
• Data storage on time, event or alarm condition
• Data buffering in flash memory when communication link is down
• Detection of sensor and cable fault
• Watchdog and self-testing