Bently Nevada 3120-2800-300 Proximitor® Proximity Sensor / Signal Conditioner

FAQ

Q1: What is the Bently Nevada 3120-2800-300 used for?
The 3120-2800-300 is used for processing proximity probe signals in machinery protection systems to monitor shaft vibration, displacement, and position.

Q2: Which series does the 3120-2800-300 belong to?
The unit belongs to the Bently Nevada 7200 Series Proximitor family, a legacy product line widely used in rotating machinery monitoring applications.

Q3: What type of probes can be connected to the 3120-2800-300?
It is designed for use with compatible Bently Nevada eddy current proximity probes, commonly 5 mm and 8 mm probe systems within the 7200 Series.

Q4: What does the 200 mV/mil specification mean?
The 200 mV/mil sensitivity means the output voltage changes by approximately 200 millivolts for every mil of shaft displacement measured by the probe.

Q5: What power supply does the 3120-2800-300 require?
The Proximitor typically requires a negative DC supply, commonly -24 VDC, supplied from the machinery monitoring system power source.

Q6: What equipment commonly uses the 3120-2800-300?
Typical applications include steam turbines, gas turbines, centrifugal compressors, pumps, generators, and large motors requiring continuous vibration monitoring.

Q7: Is the 3120-2800-300 still a current production model?
The 3120-2800-300 is a legacy Bently Nevada Proximitor model. It is mainly used for replacement and maintenance of existing 7200 Series installations.

Q8: What should be checked before replacing a 3120-2800-300?
Before replacement, confirm the connected probe model, extension cable length, system calibration parameters, power supply polarity, and monitoring rack compatibility to ensure correct operation. Bently Nevada proximity systems rely on matched probe, cable, and Proximitor characteristics for accurate measurement.

3120-2800-300 Bently Nevada

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