Bently Nevada 990-05-XX-02-00 MOD 165335-01 Vibration Transmitter

Product Description

The Bently Nevada 990-05-XX-02-00 MOD 165335-01, also cataloged as the 990 Vibration Transmitter, operates as a dedicated hardware component for radial shaft vibration measurement within machinery protection monitoring loops.

Hardware Specifications

Eddy-Current Probe Signal Processing and Rotor Dynamics

The 990 transmitter processes dynamic displacement signals from eddy-current proximity probes and converts shaft vibration amplitude into a standardized 4-20 mA current loop output. Therefore, the module supports direct connection to PLC and DCS analog input channels without a separate external signal conditioner.

The transmitter uses calibrated probe scaling parameters to maintain measurement accuracy between the proximity probe system and the rotating shaft target. Additionally, the MOD 165335-01 configuration supports 3300 XL 8 mm probe systems with a 9-meter total system length and AISI 4140 steel target calibration.

The device monitors gap voltage conditions during operation. Furthermore, the diagnostic PROX OUT connection provides access to raw dynamic vibration signals and gap voltage information for rotor dynamics analysis, field verification, and troubleshooting.

Frequently Asked Questions

Q: What type of vibration signal does the Bently Nevada 990 transmitter output?
A: The transmitter converts the proximity probe vibration measurement into a 4-20 mA DC loop signal proportional to vibration amplitude. It also provides a separate PROX OUT diagnostic signal for dynamic waveform and gap voltage monitoring.

Q: Can the 990-05-XX-02-00 MOD 165335-01 operate with 3300 XL 8 mm probes?
A: Yes. This modification supports 3300 XL 8 mm proximity probe systems with a 9-meter calibrated system length and AISI 4140 steel target characteristics.

Q: How does the transmitter indicate probe or cable faults?
A: The transmitter drives the output below 3.6 mA within approximately 100 us after detecting probe failure or cable disconnection conditions.

Field Installation Guidelines

• Install the transmitter in a location protected from excessive mechanical impact, contamination, and moisture exposure.
• Connect the proximity probe, extension cable, and transmitter according to the specified Bently Nevada signal chain configuration.
• Maintain proper cable routing separation from high-voltage power conductors to reduce electrical interference.
• Connect cable shields according to the plant grounding standard and avoid multiple grounding points that may introduce ground loops.
• Verify probe gap voltage before commissioning. A typical Bently Nevada eddy-current system validation uses approximately -10 VDC gap voltage targets for correct probe positioning.
• Confirm the 4-20 mA loop polarity and supply voltage before connecting the transmitter to the control system analog input.
• Use the diagnostic PROX OUT terminal when performing field vibration waveform checks or rotor dynamics analysis.

Other Attributes

• Series: 24765 and 135613 Case Expansion Transducer Systems
• Country of Origin: USA
• Lead Time: In Stock, 2 Working Days

In Stock Hot Items of The  Bently Nevada

Our Competitive Brands

• - ABB Advant-800xA，Advant OCS，Bailey Infi 90 and Net 90，H&B Freelance 2000，DSQC Robots，IGCT / IGBT
• - GE General Electric Field Control, Genius I/O, QuickPanel, RX3i PacSystem, Series 90, Series 90, Series VersaMax
• - Allen Bradley Allen-Bradley SLC500, MicroLogix, CompactLogix, ControlLogix, PLC-5, Panel View,
• - Bently Nevada 3300 System, 3500 System
• - Honeywell 7800 Series, FSC, IPC, Mxopen, TDC 2000, TDC 3000, Experion PKS(C200,C300)
• - Yokogawa Centum CS - Centum VP, Centum XL - micro XL, FA-M3, ProSafe-PLC
• - Ovation, Foxboro, EPRO, Emerson DeltaV, Fuji, Siemens, HIMA, Prosoft, Invensys Triconex, ICS TRIPLEX, Woodward, Bachmann, Schneider

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