Rockwell Automation Entek has introduced a Windows CE based, two-channel
machine vibration data collector that is capable of taking vibration
level readings in two axes over the range 0.16Hz to 40kHz. The Enpac 1200
has an integral laser tachometer that enables the phase angle of a shaft
to be measured at the same time as recording its vibration. All the
operator has to do is apply a small piece of reflective tape to the
shaft. The two-channel instrument can also be used to collect separate
vibration readings from two coupled pieces of machinery, such as a pump
and motor. Observation of the phase angle between these readings
indicates specific malfunctions such as misalignment. Data stored can be
downloaded to a PC and analysed using Entek's Emonitor Odyssey software.