Overview
Specification
| Parameter | Specification |
|---|---|
| Manufacturer | Bently Nevada |
| Series | 3300 XL |
| Model Number | 330878‑50‑00 |
| Product Type | Proximity Transducer / Proximitor Sensor |
| Measurement Principle | Eddy current, non-contact |
| Probe Diameter | 11 mm |
| Linear Measurement Range | ±12.7 mm (±500 mils) |
| Linear Range Start | ~0.63 mm from target surface |
| Output Scale Factor | 1 V/mm nominal |
| Deviation from Straight Line (DSL) | ±0.127 mm (±5 mils) typical |
| Frequency Response | 0–2.7 kHz typical |
| Supply Voltage | -17.5 Vdc to -26 Vdc |
| Power Consumption | ≤ 12 mA |
| Output Resistance | 50 Ω |
| Recommended Cable | Shielded triad (0.2–1.5 mm²) |
| Maximum Cable Length | 305 m (1000 ft) |
| Target Requirements | ≥ 19 mm (0.75 in) flat steel surface |
| Operating Temperature – Sensor | -51°C to +100°C (-60°F to +212°F) |
| Operating Temperature – Probe/Cable | -35°C to +120°C (-31°F to +248°F) |
| Environmental Protection | Vibration, moisture, and EMI/RFI tolerant |
| Certifications | CE, FCC, RoHS; optional hazardous area approvals |
| Mounting | Panel or DIN-rail mount |
FAQ
A1: The 330878‑50‑00 provides ±12.7 mm (±500 mils) linear range.
Q2: Is it compatible with 3300 XL systems?
A2: Yes, it integrates fully with 3300 XL monitoring modules and racks.
Q3: What type of output signal does it provide?
A3: It outputs a nominal 1 V/mm proportional voltage signal.
Q4: Can it operate in harsh industrial environments?
A4: Yes, it withstands vibration, moisture, temperature extremes, and EMI/RFI.
Q5: What machinery uses this sensor?
A5: Turbines, compressors, generators, and other critical rotating equipment.
Q6: How long can the extension cable be?
A6: Shielded cables up to 305 m (1000 ft) are supported without signal loss.
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