18745-03 | Bently Nevada 7200 Series Proximitor Sensor

SPECIFICATIONS:

Part Number: 18745-03
Manufacturer: Bently Nevada
Product Type: 7200 XL 5/8mm Proximity Sensor Module
Transducer Power Supply: 24 Vdc
VoltageCompliance: 0 to +12 Vdc
Input signal range: +10.0 V to -24.0 V
OperatingTemperature: -45 ºC to +65 ºC
Number of channels: 12
Dimensions: 10.2cm X 11.4cm X 13.2cm
Repair: 3-7 Day
Weight: 0.23 kg
Availability: In Stock
Country of Origin: United States

FUNCTIONAL DESCRIPTION:

18745-03 is a 7200 XL 5/8mm Proximity Sensor Module manufactured and designed by Bently Nevada as part of the 3300 Series used for machinery vibration monitoring systems. The 7200 5 mm and 8 mm Proximity Transducer Systems are non-contacting, gap-to-voltage transducer systems that measure static as well as dynamic distances between the probe tip and the observed target. The general application is any requirement for an accurate, non-contacting displacement measurement. However, the most common use is for shaft position and vibration measurements on rotating and reciprocating machinery. They are designed for use with virtually any machine type including gas and steam turbines, compressors, pumps, centrifuges, electric motors, and generators. The systems offer 80 mils (2 mm) of linear measuring range and are compatible with API 670 requirements. A system consists of a probe with an integral coaxial cable, an extension cable, and a Proximitor. All 7200 proximity transducer systems are compatible with 3300 and 9000 Monitoring Systems.

APPLICATIONS:

• The 7200 5 and 8 mm Systems have a frequency response of 0 Hz (DC) to 10 kHz and can be used to make the following types of measurements:
• Radial vibration for indicating bearing condition and such machine malfunctions as rotor imbalance and misalignment.
• Axial thrust position for determining thrust bearing wear or potential bearing failure.
• Shaft average radial position, for determining attitude angle, an indicator of rotor stability.
• Vibration amplitude and phase angle for plotting diagnostic information in Polar and Bode formats.
• Eccentricity to measure the amount of rotor bow.

HOW A PROXIMITY TRANSDUCER SYSTEM WORKS:

Operating on the eddy current principle, the proximity probe senses the distance between the probe tip and the observed surface. The Proximitor generates a radio frequency signal, which is radiated through the probe tip into the observed surface. Eddy currents are generated in the surface, and the loss of strength in the return signal is detected by the Proximitor, which conditions the signal for linear display on a monitor.

IMPROVED PROXIMITY PROBES:

• An improved 8 mm version of the 7200 System is now standard which includes Bently Nevada’s Cable Loc feature. This new technique of securing the coaxial cable to the probe tip provides the strongest junction yet offered by Bently Nevada and increases the durability of the probe during installation and usage.

• Two new cable length options are now available on 8 mm probes. They are 5 metres and 9 metres of integral cable. Since the entire lead length is built into the probe, an extension cable is not used with these length options.

• Nine probe configurations are available to accommodate English and metric thread requirements. The 5 mm probes are constructed of fiberglass. The 8 mm probes are constructed of polyphenylene sulfide (PPS), a high-performance plastic capable of withstanding unusually harsh, wet, and/or chemical environments.

• Both transducers are suitable for use in a confined space and offer 80 mils (2 mm) of linear range with a scale factor of 200 mV/mil (8 V/mm).
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