Configured for mechanical vibration monitoring, the Bently Nevada 990-05-XX-01-CN (990-05-XX-01-CN Vibration Transmitter) provides direct electrical execution of vibration signal conditioning and 4-20 mA loop output generation for machinery diagnostic systems.

Model Suffix & Configuration Overview

The 990-05-XX-01-CN is a vibration transmitter calibrated for a 0-5 mils peak-to-peak (0-125 micrometer peak-to-peak) measurement range. The assembly features an integrated DIN rail mount design and carries environmental certifications including CSA Division 2, ATEX Zone 0, and ATEX Zone 2, with explicit ABS maritime approval for use in rigorous industrial conditions.

Hardware Specifications

Mechanical Monitoring & TSI Technical Attributes

This transmitter utilizes eddy-current probe scaling to convert high-frequency proximity sensor signals into a standard 4-20 mA industrial process variable. Proper installation requires precise gap voltage validation, targeting -10 VDC at the probe interface to ensure linear transducer response. The transmitter internal circuitry maintains rotor dynamics signal integrity and incorporates protection mechanisms against signal noise, requiring careful grounding to minimize cross-talk suppression issues in dense instrumentation cabinets.

Ordering info

• 1 x 990-05-XX-01-CN Vibration Transmitter

• 1 x DIN rail mounting clip set

• 1 x Technical installation guide

Field Installation Guidelines

• Mechanical Mounting:

  Utilize the integrated 35 mm DIN rail clips for mounting. Ensure the transmitter is oriented to allow adequate airflow for heat dissipation.

• Electrical Connection:

  Supply between 12 and 35 VDC at the terminal block. Ensure total loop resistance, including cable, does not exceed 1,000 Ohm at 35 VDC to maintain signal accuracy.

• Probe Interfacing:

  Connect to the proximity probe system using shielded cable. Validate that the probe gap voltage is within the specified linear range before finalizing transmitter calibration.

• Environmental Protection:

  While the unit is ATEX/CSA certified, ensure the final installation site conforms to the hazardous area classification markings indicated on the device label.

Frequently Asked Questions

• What is the primary function of this transmitter?

  This device converts signals from proximity transducers into a proportional 4-20 mA current signal for integration into DCS or PLC monitoring platforms.

• Can this transmitter be used in hazardous locations?

  Yes, it is certified for CSA Division 2, ATEX Zone 0, and ATEX Zone 2 applications. Always verify the installation site matches these safety ratings.

• What is the maximum loop resistance?

  The transmitter supports a maximum loop resistance of 1,000 Ohm when supplied with 35 VDC. Ensure cable resistance is calculated within this limit.

• Is the input voltage range flexible?

  The transmitter accepts a DC supply voltage between 12 and 35 VDC measured at the transmitter terminals.

• What signal output does this unit provide?

  The unit provides a standard 4-20 mA current loop signal proportional to the measured peak-to-peak vibration level.

• How is the vibration range defined?

  This specific model is factory calibrated for a 0-5 mils peak-to-peak (or 0-125 micrometer peak-to-peak) measurement range.

• Does the unit include current limiting?

  Yes, the transmitter internal circuitry provides current limiting, typically clamped at 23 mA to protect the loop and connected instrumentation.

• Is this unit suitable for maritime applications?

  Yes, the -CN suffix indicates that the transmitter includes ABS maritime approval for use in offshore and marine environments.