The 330878-91-00 is a 3300 XL 50 mm Proximitor Sensor designed as an essential signal processing interface for eddy current proximity transducer systems. The device accepts a noncontacting input from one 3300 XL 50 mm Proximity Probe and Extension Cable, converting the measured gap between the probe tip and a target into a proportional voltage output. Engineered specifically for long-range displacement monitoring, this sensor is optimized for measuring differential expansion (DE) or rotor expansion (RX) on fluid-filmed bearing machines such as large steam turbine generators. It features a thin layout ideal for high-density configurations and provides complete backwards signal compatibility with older legacy 7200 and 50 mm DE Integral systems by maintaining an identical output scale factor.
| Part Number Segment | Value | Description |
|---|---|---|
| Base Model | 330878 | 3300 XL 50 mm Proximitor Sensor |
| Option A (Total Length and Mounting) | 91 | 9.0 meters (29.5 feet) system length, DIN mount |
| Option B (Agency Approval) | 00 | No Approvals |
| Parameter | Specification |
|---|---|
| Manufacturer | Bently Nevada |
| Model Number | 330878-91-00 |
| Product Type | 3300 XL 50 mm Proximitor Sensor |
| Linear Range | 27.9 mm (1100 mils) |
| Average Scale Factor (ASF) | 394 mV/mm (10 mV/mil) nominal |
| Deviation from Best Fit Straight Line (DSL) | Less than ±0.74 mm (±29 mils) |
| Proximitor Sensor Input | Accepts one non-contacting 3300 XL 50 mm Proximity Probe and Extension Cable |
| Power Requirements | Requires -17.5 Vdc to -26 Vdc without barriers at 12 mA maximum consumption; -23 Vdc to -26 Vdc with barriers |
| Output Resistance | 50 Ohm |
| Extension Cable Capacitance | 69.9 pF/m (21.3 pF/ft) typical |
| Field Wiring Size | 0.2 to 1.5 mm2 (16 to 24 AWG) |
| Proximitor Sensor Material | A380 aluminum |
| Operating Temperature | -51 degC to +100 degC |
| Storage Temperature | -51 degC to +105 degC |
| Relative Humidity Limits | Less than a 3% change in Average Scale Factor (ASF) when tested per IEC standard 68-2-66 |
| Electrical Classification | Complies with the European CE mark |
| Country of Origin | USA |
Global Express Shipping
Returns & Warranty
Manufacturer: Bently Nevada
Product No.: 330878-91-00
Country of origin:United States
Product Type: Proximitor Sensor
Barcode: 8537101190
Payment: T/T, Western Union
Weight: 280g
Dimensions: 89.4 mm x 61 mm x 105 mm (H x W x D)
Shipping port: Xiamen
Warranty: 12 months
The 330878-91-00 is a 3300 XL 50 mm Proximitor Sensor designed as an essential signal processing interface for eddy current proximity transducer systems. The device accepts a noncontacting input from one 3300 XL 50 mm Proximity Probe and Extension Cable, converting the measured gap between the probe tip and a target into a proportional voltage output. Engineered specifically for long-range displacement monitoring, this sensor is optimized for measuring differential expansion (DE) or rotor expansion (RX) on fluid-filmed bearing machines such as large steam turbine generators. It features a thin layout ideal for high-density configurations and provides complete backwards signal compatibility with older legacy 7200 and 50 mm DE Integral systems by maintaining an identical output scale factor.
| Part Number Segment | Value | Description |
|---|---|---|
| Base Model | 330878 | 3300 XL 50 mm Proximitor Sensor |
| Option A (Total Length and Mounting) | 91 | 9.0 meters (29.5 feet) system length, DIN mount |
| Option B (Agency Approval) | 00 | No Approvals |
| Parameter | Specification |
|---|---|
| Manufacturer | Bently Nevada |
| Model Number | 330878-91-00 |
| Product Type | 3300 XL 50 mm Proximitor Sensor |
| Linear Range | 27.9 mm (1100 mils) |
| Average Scale Factor (ASF) | 394 mV/mm (10 mV/mil) nominal |
| Deviation from Best Fit Straight Line (DSL) | Less than ±0.74 mm (±29 mils) |
| Proximitor Sensor Input | Accepts one non-contacting 3300 XL 50 mm Proximity Probe and Extension Cable |
| Power Requirements | Requires -17.5 Vdc to -26 Vdc without barriers at 12 mA maximum consumption; -23 Vdc to -26 Vdc with barriers |
| Output Resistance | 50 Ohm |
| Extension Cable Capacitance | 69.9 pF/m (21.3 pF/ft) typical |
| Field Wiring Size | 0.2 to 1.5 mm2 (16 to 24 AWG) |
| Proximitor Sensor Material | A380 aluminum |
| Operating Temperature | -51 degC to +100 degC |
| Storage Temperature | -51 degC to +105 degC |
| Relative Humidity Limits | Less than a 3% change in Average Scale Factor (ASF) when tested per IEC standard 68-2-66 |
| Electrical Classification | Complies with the European CE mark |
| Country of Origin | USA |
| Product Image | Model Number / Title | Condition | Availability | Action |
|---|---|---|---|---|
|
Bently Nevada 330180-X0-00 MOD 161255-02 3300 XL 5/8 mm Proximitor Sensor | Original New | In Stock | View Details |
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Color pattern |
Blue
Silver
|
| Country of origin |
United States
|
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