Description

Sensonics robust range of eddy current proximity probes for non-contact vibration and displacement monitoring are designed to comply with the API 670 standard enabling compatibility with other manufacturers equipment, for example Bently Nevada. The core applications for this transducer is monitoring shaft expansion, relative vibration and speed on a range of rotating machinery from turbines to pumps and compressors. Sensonics proximity probes are available in either straight or disc mounting configurations and can be supplied with a range of adjustable bracketry. Highly reliable and available in intrinsically safe (ATEX) variants, a summary of these vibration and displacement monitoring sensors is detailed below.

The proximity probe system is made up of an inductive sensor embedded in a stainless steel body with a fixed & tuned length of coaxial cable connected to a separate driver unit. The driver provides the excitation to the probe and generates a linearised output proportional to the gap between the target material and probe tip.

Available Ranges: 0 – 2.5mm to 0 – 25mm Construction: Stainless steel body, probe tip diameters from 5mm to 50mm Sensitivity: Up to 8mV/µm Standard System Lengths: 2m, 5m, 7m, 9m and 14m Linearity: Better than 1% Operating Temperature: -30°C to +180°C Specials: Submersible to 300bar High temperature to +240 °C Extended measurement range ATEX EEx ia IIC T2 / EEx ia IIC T4

 

Designed for Reliability, Accuracy and Flexibility , the Senturion X range of proximity probe systems consist of a calibrated probe, extension cable and driver. Utilising the eddy current principle, this combination forms a tuned circuit with the target material and variations in probe face to target distance are detected in this circuit by the driver, providing a linearised voltage output proportional to target gap. This measurement system provides highly accurate (resolution typically less than one micro-meter) vibration and relative positional measurements, for harsh
environments up to 180 °C.

The driver unit offers selectable system lengths of 5 m, 7 m or 9 m, with a front panel green LED for indicating the selected option. A gap voltage monitoring socket is also provided. The cable system incorporates snap lock connectors which require no torqueing and provide a shake proof solution important for heavy industrial applications.

The double screened cable offers robustness in combination with high immunity to interference and optional stainless steel convoluted armour is available for applications or environments where cable protection is paramount.

Key Features

• Switch selectable system cable lengths 5 m, 7 m and 9 m.
• LED indication of selected length.
• 3.5 mm socket for gap voltage monitoring.
• Double screened cable for high noise immunity.
• Snap lock and shake proof cable connection.
• Low profile driver for easy local integration to machine (Din rail mount opt).
• Excellent repeat-ability on replacement of probe, extension or driver.
• Compliant with standard API 670.
• Hazardous Area Approved.

 

Product Data Sheets:

Please Click Data Sheet number to view full specification. 

Straight and Reverse Mounting Probes
XPR04, 8mm tip, 2.5mm or 4.0mm range, 7.87mV/um or 3.94mV/um	DS1246	Shaft Vibration Monitoring for fluid film bearings, shaft position / thrust wear and speed monitoring on a wide range of machinery, e.g. motors, pumps, compressors and steam turbines.
XPR02, 5mm tip diameter, up to 2.5mm range, 7.87mV/um	DS1259	Same applications as above and suited for limited space, small target and narrow side view use.
XPR08, 20mm tip diameter, up to 8.0mm range, 1.97mV/um	DS1262	Shaft position and rotor expansion monitoring on steam turbines.
XPR12, 25mm tip diameter, up to 12mm range, 1.38mV/um	DS1253	Rotor expansion monitoring on large steam turbines.

 

Disc Probes for Extended Range and Low Profile Mounting
XPD12, 25mm tip, disk mount, up to 12mm range, 1.38mV/um	DS1247	Rotor expansion monitoring on large steam turbines. Limited space applications.
XPD25, 50mm tip, disk mount, up to 25mm range, 0.63mV/um	DS1251	Rotor expansion monitoring on large steam turbines. Limited space applications.

 

Straight Probe with Integrated Driver Function
PRI04, 8mm tip diameter, up to 2.5mm range, 7.87mV/um	DS1247	Shaft Vibration Monitoring for fluid film bearings, shaft position / thrust wear and speed monitoring on a wide range of machinery, e.g. motors, pumps, compressors and steam turbines, Ideal for OEM integration.

 

Direct 4-20mA Proximity Probe Systems
DNX8031, 4-20mA Loop Powered, Vibration Transmitter, up to 0-250um pk-pk	DS1254	Direct DCS/PLC integration for shaft vibration monitoring for fluid film bearings on motors, pumps, compressors and steam turbines.
DNX8033, 4-20mA Loop Powered,  Shaft Pos / Thrust Transmitter, -1.0mm to +1.0mm	DS1250	Direct DCS/PLC integration for shaft position / thrust wear monitoring on a wide range of machinery, e.g. pumps, compressors and steam turbines.
DNX8038, 4-20mA 3-wire +24Vdc,  Speed Transmitter, 1Hz to 10kHz	DS1255	Direct DCS/PLC integration for speed monitoring on a wide range of machinery, e.g. motors, pumps, compressors and steam turbines.

 

Other Senturion Range Probes
PRSV04, Shielded tip format, 300 bar, up to 2.2mm range, 7.87mV/um	L168	Suitable for high pressure and highly corrosive environments. Flush mounting and narrow side view use.
PRS05, 16mm tip, 240°C, 4.0mm range, 3.94mV/um	L166	Suitable for high temperature environments.
PRW12, straight 25mm tip, 12mm range, 5 bar, 1.2mV/um	DS1155	Shaft position / thrust wear for submerged pumps.
PRD04, 8mm tip, disk mount 2.5mm or 4.0mm range, 7.87mV/um or 3.94mV/um	L161	Shaft position / rotor expansion for limited space applications on smaller machines.

 

Accessories
ECPH standard proximity probe holder	DS1141	For mounting on machine case with gap probe gap adjustment.
ECPAC proximity system probe holder	DS1230	As above but includes mounting for driver unit in probe holder.
Bracketry for eddy current proximity probes	L134	Standard and custom options available