Posted to News on 10th Dec 2010, 12:02
Senturion proximity probes for vibration and position monitoring
Sensonics is promoting its extensive range of Senturion proximity probes for vibration and position monitoring in a wide variety of applications. The proven eddy current probes have been supplied over the years for many applications and are offered in compact packages for installing directly on machinery. Recent additions to the range include products that provide a measurement range of up to 4mm, with an 8mm diameter tip probe, in a complete machine-mountable assembly containing both the proximity probe and driver; this device provides micrometre measurement resolution for critical fluid film bearing vibration and shaft position applications.
The self-contained proximity probe assembly has a number of features to make it suitable for a wide range of applications. The housing is moulded from a robust PPS thermoplastic loaded with conductive fibres for electrostatic dissipation, so the overall probe system is rated for use in EEx ia IIC T4 applications.
Furthermore, the assembly is available in various mounting options to ensure a seal to the machine case through either an NPT or straight thread configuration; the probe is typically reverse-mounted into the holder in combination with an O-ring to provide a seal. The unit accepts various probe types from the Sensonics range, including standard and extended range tips, high-pressure and shielded versions for compact applications where the machine case would otherwise interfere with the system measurement accuracy.
Sensonics says the system is also suitable for use with its DN803X series of probe drivers that provide a direct 4-20mA two-wire system for either vibration or thrust position applications. Various gland fitting options are available on the housing for plant cable connection, thereby eliminating the need for a local junction box or driver housing - which is often required for proximity probe applications due to the fixed (tuned) cable length required between the probe and driver.
Senturion proximity probes are also appropriate for use in both speed and compressor rod drop measurement applications, as the proximity probe assembly can be standardised across a range of machine measurements to simplify set-ups and reduce the spares requirement. Sensonics offers a series of Senturion probes, with specifications as follows:
- Measurement ranges: 0-2.5mm to 0-25mm
- Construction: stainless steel body
- Probe tip diameters: 5mm to 50mm
- Sensitivity: up to 8mV/um
- Standard system lengths: 2m, 5m, 7m, 9m and 14m
- Linearity: better than 1 per cent
- Operating temperature: -30 to +180degC
- Specials: submersible to 300bar, high temperature to 240degC, extended measurement range
Follow the link for more information about Sensonics' Senturion proximity probes for vibration and position monitoring.
