Brand:Bently Nevada PLC Item No.:991-01-XX-01-00 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-01-00 (284318-01) is a loop-powered thrust sensor designed for axial displacement monitoring in rotating machinery. It converts proximity probe signals into a stable 4–20 mA output for integration into industrial control and protection systems.
Unlike radial vibration transmitters, the 991 series focuses specifically on axial thrust behavior, making it essential for compressors and turbines where shaft position stability directly impacts operational safety and equipment life.
It is widely used in OEM and industrial monitoring applications where compact design, reliability, and continuous operation are required.
Technical Specifications
Parameter
Value
Model
991-01-XX-01-00
Part Number
284318-01
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 / 0.95 lb ≈ 0.95 lb)
Recommended Related Models
Bently Nevada 991-01-XX-01-05 284318-01
Bently Nevada 991-01-XX-01-CN 284318-01
Bently Nevada 990-10-XX-01-00 283278-01
Bently Nevada 990-10-XX-01-05 165353-01
Bently Nevada 3300 NSv Proximity Probe System
Popular Related Models
991-01-XX-01-05
991-01-XX-01-CN
990-10-XX-01-00
990-08-XX-01-05
990-10-XX-01-05
Applications
The Bently Nevada 991-01-XX-01-00 284318-01 991 Thrust Sensor Module is designed for axial displacement and thrust position monitoring in rotating machinery, delivering stable signal conversion for protection and condition monitoring systems in industrial environments.
Typical applications include:
Steam turbine thrust bearing position monitoring
Gas turbine axial displacement tracking
Centrifugal compressor thrust load protection
Industrial pump axial movement supervision
Gearbox thrust force stability monitoring
Industrial fan rotor axial stability control
Critical rotating machinery protection systems
OEM predictive maintenance monitoring solutions
Advantages
Dedicated thrust measurement for critical rotating equipment
Integrated signal conditioning for simplified system architecture
Stable 4–20 mA output for direct PLC/DCS integration
High resistance to vibration, humidity, and industrial environments
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 or displacement in rotating machinery and converts it into a proportional 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 signal does it provide?
A3: A standard 4–20 mA analog signal for industrial control systems.
Q4: What probe system is compatible with it?
A4: It is compatible with Bently Nevada 3300 NSv proximity probe systems.
Q5: Where is it commonly used?
A5: It is used in turbines, compressors, pumps, motors, and fans.
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 high vibration, temperature, and humidity conditions.
Q9: Does it require external signal conditioning?
A9: No, signal conditioning is fully integrated inside the transmitter.
Q10: Can it connect directly to PLC/DCS systems?
A10: Yes, it integrates directly via 4–20 mA input channels.
