Excellent PLC
| Company Information | ||||||||
| [email protected] | ||||||||
| Mobile | +8613666033393 | |||||||
| +8613666033393 | ||||||||
| 13666033393 | ||||||||
| Add | Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China | |||||||
Product Description
The Bently Nevada 330850-91-CN is part of the 3300 XL 25 mm Proximity Transducer System, which includes a proximity probe, extension cable, and Proximitor Sensor. It is specifically designed for Differential Expansion (DE) measurements in steam turbine generators. The system delivers a linear output of 0.787 V/mm (20 mV/mil) over a range of 12.7 mm (500 mils).
Technical Specifications
| Parameter | Specification |
|---|---|
| Linear Range | 12.7 mm (500 mils) |
| Scale Factor (ASF) | 0.787 V/mm (20 mV/mil) |
| Frequency Response | 0–2.7 kHz (+0, -3 dB typical) |
| Operating Temp (Sensor) | -51°C to +100°C |
| Storage Temp (Sensor) | -51°C to +105°C |
| Operating Temp (Probe) | -35°C to +200°C |
| Short-Term Temp (Probe) | +250°C (up to 24 hrs) |
| Probe Tip Material | PEEK |
| Probe Case Material | AISI 304 Stainless Steel |
| Sensor Material | A380 Aluminum |
| Extension Cable | PFA-insulated FluidLoc, 75 Ω triaxial |
| Total Length | 9.0 meters |
| Weight | 0.255 kg (Sensor only) |
| Output Resistance | 50 Ω |
| Environmental Rating | 100% condensing humidity (non-submersible) |
| Compliance | CE, RoHS, FCC, CSA, ATEX/IECEx certified |
Applications
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Steam turbine differential expansion monitoring
-
Turbomachinery axial displacement measurements
-
High-temperature industrial environments
-
Rotating machinery diagnostic systems
-
Condition-based maintenance systems
Product Advantages
-
High linearity over extended range (12.7 mm)
-
Robust construction for extreme temperatures up to 250°C
-
EMI/RFI resistance, CE-compliant without shielding
-
ClickLoc and FluidLoc connectors prevent moisture intrusion
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Flexible mounting options, including sliding brackets
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Backward compatible with legacy Bently Nevada systems (7200 series)
Frequently Asked Questions (FAQ)
Q1: What is the main purpose of the 330850-91-CN sensor?
A1: It is designed to measure differential expansion in turbine generators.
Q2: What is the linear range of the 330850-91-CN?
A2: The system offers a 12.7 mm (500 mils) linear range.
Q3: Is the sensor compatible with older 7200 series systems?
A3: Yes, it is electrically compatible with 7200 25 mm and 35 mm systems.
Q4: Can it be used in high-temperature environments?
A4: Yes, the probe operates continuously up to 200°C, and temporarily up to 250°C.
Q5: What is the output scale factor of the sensor?
A5: The nominal output is 0.787 V/mm (20 mV/mil).
Q6: What materials are used for the probe and sensor housing?
A6: Probe uses AISI 304 SST; the sensor uses A380 aluminum.
Q7: How is moisture protection achieved?
A7: The system uses FluidLoc cables and ClickLoc connectors with seals.
Q8: What is the minimum recommended target size?
A8: A 61 mm (2.4 inch) flat target diameter is recommended.
Q9: Is it suitable for marine applications?
A9: Yes, it meets ABS 2009 Steel Vessel Rules for maritime use.
Q10: How is the sensor mounted?
A10: It supports both DIN-rail and panel mounting configurations.
Related or Same Series Models
| Model Number | Description | Length | Weight |
|---|---|---|---|
| 330850-91-CN | Proximitor Sensor, 25 mm, 9 m | 9.0 m | 0.255 kg |
| 330851-01-000-020-10-00-05 | 25 mm Probe, 1¼-12 thread, 2″ case | 2.0 m | ~0.23 kg |
| 330851-02-000-040-10-00-05 | 25 mm Probe, M30x2 thread, 4″ case | 4.0 m | ~0.29 kg |
| 330854-040-24-00 | Extension Cable, 4 m, FluidLoc | 4.0 m | ~0.18 kg |
| 330854-080-24-00 | Extension Cable, 8 m, FluidLoc | 8.0 m | ~0.36 kg |
| 330853-01-01 | Sliding Bracket, Single DE Application | – | 0.58 kg |
Popular Bently Nevada Models
| Model Number | Description | Application Type | Weight |
|---|---|---|---|
| 3500/42M-01-00 | Proximitor Seismic Monitor | Vibration Monitoring | ~0.5 kg |
| 3500/22M | Transient Data Interface | System Integration | ~0.4 kg |
| 330104-00-10-10-02-00 | 8 mm Proximity Probe | Radial Vibration | ~0.2 kg |
| 330180-91-05 | 3300 XL Proximitor Sensor, 8 mm, 5 m | General Machinery | 0.255 kg |
| 3500/15 | Power Supply Module | 3500 Series Rack | ~0.8 kg |
| 146031-01 | Proximitor System Test Cable | Test and Verification | ~0.15 kg |
