Introduction

The 990-08-XX-01-CN is a loop-powered vibration transmitter designed for OEM industrial monitoring applications. It converts proximity probe signals into a stable 4–20 mA output, enabling direct integration into control and protection systems.

It is widely used in turbines, compressors, pumps, and rotating equipment where continuous vibration monitoring is essential for predictive maintenance and operational safety.

Technical Specifications

Parameter	Value
Model	990-08-XX-01-CN
Product Type	990 Vibration Transmitter
Input Type	3300 NSv Proximity Probe
Output Signal	4–20 mA
Supply Voltage	+12 to +35 VDC
Operating Temperature	-40°C to +85°C
Frequency Response	5 Hz – 6 kHz
Accuracy	±1.5% full scale
Mounting Type	DIN rail / bulkhead
Dimensions	100.1 × 73.9 × 53.3 mm
Weight	0.43 kg (0.95 lb)

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Applications

The Bently Nevada 990-08-XX-01-CN 990 Vibration Transmitter Module is designed for continuous vibration monitoring in industrial rotating machinery, providing stable signal conversion for critical protection and condition monitoring systems.

Typical applications include:

Gas turbine vibration monitoring
Steam turbine protection systems
Centrifugal compressor diagnostics
Industrial pump condition monitoring
Electric motor bearing health tracking
Refinery rotating equipment supervision
Power generation auxiliary machinery systems
Heavy industrial HVAC equipment

Advantages

Integrated proximitor design reduces external instrumentation requirements
Stable 4–20 mA output for PLC/DCS integration
High resistance to vibration, humidity, and temperature stress
Compatible with Bently Nevada 3300 NSv proximity probe systems
Compact structure suitable for tight industrial installations
Built-in NOT OK diagnostic fault detection
Long operational life with low maintenance demand
OEM-grade reliability for continuous industrial environments

Technical FAQs

Q1: What probe system is compatible with this model?
A1: It is compatible with Bently Nevada 3300 NSv proximity probe systems.

Q2: Does it require external signal conditioning?
A2: No, it has integrated signal conditioning inside the transmitter.

Q3: What output signal does it provide?
A3: It provides a standard 4–20 mA analog vibration output.

Q4: Can it be used for turbine protection systems?
A4: Yes, it is widely used in turbine and compressor monitoring applications.

Q5: Is it suitable for continuous operation?
A5: Yes, it is designed for 24/7 industrial monitoring.

Q6: Can it interface directly with PLC systems?
A6: Yes, it connects directly via 4–20 mA output.

Q7: Does it support diagnostic functions?
A7: Yes, it includes NOT OK and signal integrity monitoring.

Q8: Is field calibration required?
A8: No, it is factory calibrated for long-term stability.

Q9: Can it operate in high vibration environments?
A9: Yes, it is engineered for harsh industrial vibration conditions.

Q10: Is it suitable for harsh environments?
A10: Yes, it supports industrial-grade temperature and humidity resistance.

Look forward to your comments!Comment

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Bently Nevada PLC

Bently Nevada 990-08-XX-01-CN 990 Vibration Transmitter