Bently Nevada 990BNT-05-50-01-CN Vibration Transmitter

Product Overview

The Bently Nevada 990BNT-05-50-01-CN is a loop-powered vibration transmitter integrating vibration velocity and temperature measurement.
It is engineered for continuous condition monitoring of rotating machinery in demanding industrial automation environments.
Moreover, the transmitter delivers stable 4–20 mA signals, ensuring seamless integration with PLC and DCS platforms.
Its compact, rugged construction supports long-term operation on compressors, pumps, motors, and industrial fans.

Key Functional Highlights

This transmitter combines vibration and temperature sensing within a single industrial-grade housing for simplified installation.
In addition, the two-wire loop-powered design reduces wiring complexity and minimizes panel space requirements.
The piezoelectric vibration element ensures accurate velocity measurements across typical rotating equipment speed ranges.
Therefore, maintenance teams can detect imbalance, misalignment, and bearing degradation at an early stage.
The integrated PT100 RTD provides reliable temperature feedback, supporting comprehensive machinery health assessment.

Technical Specifications

Model Number: 990BNT-05-50-01-CN
Manufacturer: Bently Nevada
Transmitter Type: Two-wire, loop-powered
Measured Parameters: Vibration velocity and surface temperature
Vibration Sensor: Piezoelectric element
Temperature Sensor: PT100 RTD
Output Signal: 4–20 mA proportional to vibration and temperature
Power Supply: 24 VDC
Sensor Compatibility: Bently Nevada 3300 NSv probes with 5 m or 7 m extension cables
Mounting Method: Direct mounting on machinery casing
Operating Temperature Range: -40°C to +85°C
Environmental Protection: Industrial sealed housing for harsh conditions

Typical Applications and Integration

This transmitter is widely applied on compressors, pumps, motors, and fans across industrial facilities.
For instance, it integrates easily into existing PLC or DCS architectures using standard analog input cards.
Moreover, OEMs adopt this device where cost-effective vibration monitoring is required without complex monitoring systems.
It supports predictive maintenance programs by providing continuous vibration and temperature trend data.

Reliability, Support, and Maintenance

The 990BNT series is designed for continuous operation in environments with vibration, temperature fluctuation, and humidity.
Therefore, routine maintenance requirements remain minimal throughout the device operational lifecycle.
Bently Nevada provides global technical support, documentation, and long-term product availability for installed systems.

FAQ

Q: What signals does the 990BNT-05-50-01-CN provide?
A: It outputs standard 4–20 mA signals representing vibration velocity and temperature measurements.

Q: Can this transmitter connect directly to a PLC or DCS?
A: Yes, the loop-powered 4–20 mA output connects directly to standard analog input modules.

Q: Which machinery types commonly use this transmitter?
A: It is commonly installed on compressors, pumps, motors, and industrial ventilation fans.

Q: Is the device suitable for hazardous industrial areas?
A: It is designed for Class I, Div 2 or Zone 2 environments, depending on certification requirements.

Q: Does the transmitter require an external signal conditioner?
A: No, vibration sensing and signal conditioning are fully integrated within the transmitter housing.