Proximity probes provide very strong relative displacement outputs at low frequencies. However, they are difficult to install and, due to filtering in their electronics, give very little information [...]
General purpose accelerometers (100 mV/g), low frequency accelerometers (500 mV/g), and piezovelocity transducers (100 mV/ips) are specified depending upon the machine speeds, amplitude levels and me [...]
With their high sensitivity output and consequently lower amplitude range, low frequency/ high output sensors are vulnerable to overload especially in the presence of significant high frequency vibra [...]
Do 500 mV/g sensors just have more internal electronic gain than a general purpose (100 mV/g) sensor?
No. A sensor with additional electronic gain will produce the desired effect of increasing the amplitude of vibration output of the low level signal. However, this technique will also produce the und [...]
While many general-purpose 100 mV/g accelerometers carry a low frequency -3dB specification of 0.2 Hz to 0.5 Hz, they are not the best choice for accurate measurements on slow-speed machines. That is [...]
A high pass filter is inherent to electronics of all piezoelectric accelerometers. The filter has a resistor and capacitor in series and the value of these components, RC, determines the low-end cut- [...]