Brand:Bently Nevada PLC Item No.:991-01-XX-01-CN Product Origin:USA Product Dimensions:100.1 x 73.9 x 53.3 mm Product Weight:0.43 kg Payment:T/T, Western Union, Credit Card Goods_stock:15 Shipping Port:Xiamen, China Lead Time:1-3 Days Condition:Brand New And Original Warranty:1 Year Certificate:COO
The 991-01-XX-01-CN (288865-01) is a loop-powered thrust sensor designed for axial displacement monitoring in industrial rotating equipment. It converts proximity probe signals into a stable 4–20 mA output for integration into machinery protection and automation systems.
Compared with standard vibration transmitters, the 991 series focuses specifically on thrust behavior, making it essential for compressors and turbines where axial position stability directly affects mechanical integrity and operational safety.
The CN variant is commonly used for region-specific configurations and OEM deployment standards.
Technical Specifications
Parameter
Value
Model
991-01-XX-01-CN
Part Number
288865-01
Product Type
Thrust Sensor / Transmitter
Output Signal
4–20 mA
Power Supply
12–35 VDC (loop powered)
Input Type
Bently Nevada proximity probe system
Operating Temperature
-40°C to +85°C
Measurement Type
Axial displacement / thrust monitoring
Accuracy
±1% full scale
Response Time
<1 second
Mounting Type
DIN rail / panel mount
Dimensions
100.1 × 73.9 × 53.3 mm
Weight
0.43 kg (0.95 lb)
Recommended Related Models
Bently Nevada 991-01-XX-01-00 284318-01
Bently Nevada 990-10-XX-01-00 283278-01
Bently Nevada 990-10-XX-01-05 165353-01
Bently Nevada 990-10-XX-01-CN 165353-01
Bently Nevada 3300 NSv Proximity Probe System
Popular Related Models
991-01-XX-01-00
991-01-XX-01-05
990-10-XX-01-00
990-08-XX-01-05
990-10-XX-01-05
Applications
The Bently Nevada 991-01-XX-01-CN 288865-01 991 Thrust Sensor Module is designed for high-accuracy axial displacement and thrust monitoring in rotating machinery, delivering stable 4–20 mA output for protection and condition monitoring systems.
Typical applications include:
Steam turbine thrust position monitoring
Gas turbine axial displacement tracking
Centrifugal compressor thrust bearing protection
Industrial pump axial movement supervision
Gearbox thrust load monitoring
Industrial fan rotor stability control
Critical rotating machinery protection systems
OEM predictive maintenance monitoring systems
Advantages
Dedicated thrust measurement for axial position control in critical assets
Integrated signal conditioning for simplified system architecture
Stable 4–20 mA output for direct PLC/DCS integration
High resistance to vibration, temperature, and humidity stress
Compatible with Bently Nevada 3300 NSv proximity probe systems
Compact OEM design suitable for control cabinet integration
Built-in NOT OK diagnostic function for fault detection
Long-term stability for continuous industrial monitoring
Technical FAQs
Q1: What is the main function of this device?
A1: It measures axial thrust/displacement in rotating machinery and converts it into a 4–20 mA output signal.
Q2: Is it a loop-powered transmitter?
A2: Yes, it operates as a 2-wire loop-powered device.
Q3: What output does it provide?
A3: A standard 4–20 mA analog signal proportional to thrust position.
Q4: What probe system is it compatible with?
A4: It works with Bently Nevada 3300 NSv proximity probe systems.
Q5: Where is it typically used?
A5: In turbines, compressors, pumps, and other rotating machinery.
Q6: Does it support continuous monitoring?
A6: Yes, it is designed for 24/7 industrial operation.
Q7: Does it include diagnostics?
A7: Yes, it includes NOT OK fault detection functionality.
Q8: Is it suitable for harsh environments?
A8: Yes, it is built for industrial vibration, humidity, and temperature conditions.
Q9: Does it require external signal conditioning?
A9: No, signal conditioning is fully integrated inside the unit.
Q10: Can it connect directly to PLC/DCS systems?
A10: Yes, it connects directly via 4–20 mA input channels.
