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The 330910-03-20-05-11-00 belongs to the 3300 XL NSv series of eddy-current proximity probes. This armored standard mount sensor targets small-target measurement in reciprocating compressors and small steam turbines. Its stainless steel armor protects the cable in harsh industrial environments.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | 330910-03-20-05-11-00 |
| Category | 3300 XL NSv Armored Proximity Probe |
| Probe Tip Diameter | 5 mm |
| Linear Range | 0 to 1.5 mm (typical) |
| Incremental Scale Factor | 7.87 V/mm ± 6.5% |
| Frequency Response | 0 to 10 kHz |
| Operating Temperature | -35°C to +177°C (probe) |
| Cable Length | 2.0 m |
| Cable Type | Armored, stainless steel |
| Weight | Approx. 0.28 kg (probe with armored cable) |
| Connector | Coaxial, 3-pin Mil-spec |
| Mounting Thread | M8 × 1 or 5/16-24 UNF |
| Power Supply | -17.5 Vdc to -26 Vdc |
| Output Impedance | 50 Ω nominal |
| Part Count | Single probe assembly |
Measurement Principle and Interface
Eddy-current technology enables non-contact displacement measurement on ferrous targets. The driver sends a high-frequency signal through the coaxial cable to the probe coil. Subsequently, target movement modulates coil impedance and produces a proportional voltage output. The 330910-03-20-05-11-00 pairs with 3300 XL extension cables and Proximitor drivers for signal conditioning.
Installation and System Integration
Operators mount the probe through a threaded hole with a locknut. A minimum target size of 15 mm diameter ensures accurate linear response. Meanwhile, the armored cable resists abrasion and mechanical damage in tight routing paths. This protection reduces downtime in high-vibration installations. The system also supports reverse-mount configurations for confined spaces.
Energy Storage and Power Considerations
The Proximitor driver draws power from a -24 Vdc rail, typically 12 mA maximum. No internal battery or capacitor stores energy in the probe itself. Instead, external modules handle signal demodulation and power regulation. Therefore, system designers must budget for a dedicated DC supply per channel.