Excellent PLC
Product Description
The Bently Nevada 330850-51-CN is part of the 3300 XL 25 mm Proximity Transducer System, specifically designed to measure Differential Expansion (DE) in large steam turbines. It offers a 0.787 V/mm (20 mV/mil) output and supports reliable, high-accuracy operation in harsh conditions such as high temperature and electromagnetic environments.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | 330850-51-CN |
| System Length | 5.0 meters |
| Output Sensitivity | 0.787 V/mm (20 mV/mil) |
| Linear Range | 12.7 mm (500 mils) |
| Power Supply | -17.5 Vdc to -26 Vdc |
| Operating Temp (Probe) | -35°C to +200°C (short term up to 250°C) |
| Operating Temp (Sensor) | -51°C to +100°C |
| Probe Tip Material | PEEK |
| Sensor Material | A380 Aluminum |
| Cable Insulation | PFA FluidLoc |
| Weight | 0.255 kg (sensor only) |
| Total Length | 5.0 meters |
| Mounting | DIN rail mount |
| Frequency Response | 0 to 2.7 kHz (+0, -3 dB) |
| Minimum Target Size | 61 mm (2.4 in) |
Applications
-
Monitoring differential expansion in steam turbines
-
Suitable for mid-size to large rotating machinery
-
Used in harsh environments such as power plants and industrial facilities
-
Ideal for replacing legacy 7200 series DE transducers
Product Advantages
-
High accuracy with wide linear range (12.7 mm)
-
Improved EMI/RFI immunity for reliable operation
-
SpringLoc terminals for quick and secure wiring
-
Rugged design withstands up to 250°C intermittent heat
-
Fully backward compatible with older systems
-
Flexible mounting options including DIN and panel
Frequently Asked Questions
Q1: What is the linear range of this sensor?
A1: It supports a linear measurement range of 12.7 mm (500 mils).
Q2: Is it compatible with 7200 series systems?
A2: Yes, it’s designed to replace 7200 25 mm and 35 mm systems.
Q3: What is the standard output sensitivity?
A3: The nominal scale factor is 0.787 V/mm (20 mV/mil).
Q4: Can it withstand high temperatures?
A4: Yes, continuous operation up to 200°C and intermittent up to 250°C.
Q5: What is the required power supply?
A5: It requires -17.5 Vdc to -26 Vdc with a max of 12 mA.
Q6: Does it support DIN rail mounting?
A6: Yes, 330850-51-CN is the DIN rail version.
Q7: What material is used for the probe tip?
A7: Polyetheretherketone (PEEK) for high thermal stability.
Q8: Is special calibration available?
A8: Yes, factory calibration for different target materials is optional.
Q9: What type of connector does it use?
A9: ClickLoc connectors with gold-plated contacts.
Q10: Is it suitable for humid environments?
A10: Yes, the system tolerates 100% condensing humidity (non-submersible).
Related or Compatible Models (Same Series)
| Model Number | Description | Length | Mounting | Weight |
|---|---|---|---|---|
| 330850-50-00 | Proximitor Sensor, Panel Mount | 5.0 m | Panel | 0.255 kg |
| 330850-90-00 | Proximitor Sensor, Panel Mount | 9.0 m | Panel | 0.260 kg |
| 330850-91-00 | Proximitor Sensor, DIN Mount | 9.0 m | DIN | 0.260 kg |
| 330851-01-000-020-10-00-05 | 25 mm Probe, 1¼-12 thread, armored | 5.0 m | Side Exit | ~0.410 kg |
| 330854-040-24-05 | 4.0 m Extension Cable, High Temp FluidLoc | 4.0 m | – | 0.18 kg |
| 330854-080-25-05 | 8.0 m Armored Extension Cable | 8.0 m | – | 0.56 kg |
Popular Bently Nevada Models
| Model Number | Description | Application | Weight |
|---|---|---|---|
| 3500/42M | Proximitor/Seismic Monitor | Vibration Monitoring | 0.45 kg |
| 3500/22M | Transient Data Interface | Machinery Protection Systems | 0.50 kg |
| 330104-00-06-10-11-00 | 8 mm Proximity Probe | General Vibration Measurement | 0.22 kg |
| 330103-00-05-10-02-00 | 5 mm Proximity Probe | Compact Machinery | 0.18 kg |
| 3500/15 | Power Supply Module | 3500 Monitoring Systems | 0.35 kg |
| 330500-02-00 | Velocity Transducer | Seismic Monitoring | 0.28 kg |
