Cảm biến đo độ rung tần số thấp SKF CMSS 797L

Low frequency industrial accelerometer, ring mode, side exit

The CMSS 797L is an industrial accelerometer for higher precision measurements at rotational frequencies as low as 12 r/min These speeds are most commonly found in the following industries:

• Power Generation (Wind Turbines)
• Pulp and Paper
• Petrochemicals

Applications include rotors, rolls and extruders The CMSS 797L combines a high sensitivity (to reveal low amplitude signals) with a narrow band of frequency response The value of the high-pass iltering within the sensor makes it ideal for use in specialized, low speed analysis tasks using portable instruments or at speciic measurement points on on-line systems However, the low-pass iltering makes the CMSS 797L unsuitable as a general purpose accelerometer for rolling element bearing defect detection at more normal rotational speeds.

Features

• Optimal for use with SKF on-line surveillance and protection systems and all portable data collection instruments
• 500 mV/g high sensitivity
• Ultra low-noise electronics for clear signals at very low vibration levels
• Low-pass iltered to attenuate high frequencies
• Hermetically sealed
• ESD protection
• Reverse wiring protection

Speciications

Dynamic

• Sensitivity: 500 mV/g
• Sensitivity precision: ±5% at 24 °C (75 °F)
• Acceleration range: 10 g peak
• Amplitude non-linearity: 1%
• Frequency range:
– ±5%: 0,6 to 850 Hz
– ±10%: 0,4 to 1 500 Hz
– ±3 dB: 0,2 to 3 700 Hz
• Resonance frequency, mounted, nominal: 18 kHz
• Transverse sensitivity: ≤ 7% of axial
• Temperature response: See graph