PZ Series Vibration Sensor
· Shear mode accelerometer for industrial applications.
· Dual case for high noise immunity.
· Stainless steel hermetically sealed outer case.
· Top or side exit options.
· IEPE 2-wire and +24Vdc / -24Vdc 3-wire, 2 wire 4-20mA loop power options
· Connector or integrated cable options.
· Wide frequency range of operation.
· Suitable for use up to 140 ⁰C.
· Available with ATEX and IECEx approvals.
Description
The PZ Series vibration sensor consists of a high-performance shear mode piezoelectric ceramic assembly available in either a top exit or side exit hermetically sealed housing. The PZ Series with an acceleration measurement range of over 50g is suitable for vibration monitoring applications on a wide range of critical rotating machinery and typically mounted on the bearing housing to detect bearing wear and absolute vibration.
The sensor operates on a current-loop principle which permits long interconnecting cables to be used without loss of measurement accuracy. The full Series includes transducers of accelerometer and velomitor, and transmitter of vibration velocity, with standard output of 100mV/g, 4mV/mm/s and 4-20mA respectively.
The piezoelectric shear mode sensing element and signal conditioner are contained within an inner metal enclosure, which is electrically and thermally insulated from the outer stainless-steel body. The arrangement prevents the opportunity for earth loops eliminating electrical interference, and in addition minimises thermal shocks and base strain effects. The inner enclosure is connected to the 0V of the two-wire system and is
Caution
If housing measurements are being used for overall protection of the machine, thought should be given to the usefulness of the measurement for each application. Most common machine malfunctions (imbalance, misalignment, etc.) originate at the rotor and cause a change of rotor vibration. For any housing measurement alone to be effective for protection purpose, a significant amount of rotor vibration must be faithfully transmitted to the bearing housing or machine casing, or more specifically, to the mounting location of the transducer. In addition, care should be taken in the physical installation of the transducer. Improper installation can result in a degradation of the transducer’s performance, and signals generated not representing actual machine vibration. Integration of the output to velocity can
Datasheets: 
PZ Series Vibration Sensor Iss1.0.pdf
