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Technical specifications for 330850-51-00
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Manufacturer:Bently Nevada
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Product Category:Machinery Monitoring Systems
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Spare Part Number:330850-51-00
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Estimated shipping dimensions:8.6x3.5x7cm
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Weight:0.22 kg
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Tariff Code:8537101190
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Counliy of origin:USA
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Transducer family:3300 XL 25 mm
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Product role:Proximitor Sensor
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System electrical length:5.0 m
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Mounting option:DIN rail
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Agency approval option:No approvals
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Power requirement:-17.5 to -26 V DC without barriers; -23 to -26 V DC with barriers
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Maximum current consumption:12 mA
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Linear measurement range:12.7 mm (500 mil)
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Nominal scale factor:0.787 V/mm (20 mV/mil)
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Frequency response:0 to 2.7 kHz, +0/-3 dB typical
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Output resistance:50 ohms
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Field wiring distance:Up to 305 m between sensor and monitor
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Operating temperature:-51 to +100 °C
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Terminal style:SpringLoc terminal strips
Information
Overview
Manuals
Common Applications
Product Precautions
Bently Nevada 330850-51-00 conditions the signal from a matched 3300 XL 25 mm probe chain for long-range differential-expansion measurement.
- Matches a 5.0 m 3300 XL 25 mm probe-and-extension-cable electrical path.
- Uses a DIN-rail mounting configuration for high-density cabinet installation.
- Provides a nominal 0.787 V/mm output across a 12.7 mm linear range.
- Uses SpringLoc terminals for field power, common and output wiring.
The sensor forms the electronic end of the three-part transducer chain. Its probe input, field wiring and monitor connection must retain the calibrated system length and documented polarity.
Important Notice: Confirm the 5.0 m matched electrical length and DIN-rail mounting before installation. Verify bias, polarity and proportional response after connection.
Bently Nevada 330850-51-00 Manuals & Downloads
Bently Nevada 330850-51-00 Official Technical Reference Excerpt (PDF)Bently Nevada 330850-51-00 Installation & Commissioning Guide (PDF)
The official excerpt identifies the 5.0 m DIN-mounted sensor execution and applicable system specifications. The installation guide covers matched-chain checks, terminal work, gapping and controlled commissioning.
Steam-turbine differential expansion
Measures rotor-to-casing growth differences through the extended 25 mm transducer range.
Turbine supervisory instrumentation
Supplies a conditioned proximity signal to a configured TSI monitoring channel.
Long-range axial position
Supports non-contact position measurement where the 12.7 mm linear range is required.
DIN-rail cabinet installation
Fits the sensor into a high-density DIN-rail arrangement near the machine-monitoring wiring.
Before installing Bently Nevada 330850-51-00, confirm the matched 5.0 m transducer chain, DIN-rail position and controlled monitor channel.
1
Match the complete 330850-51-00 marking to the approved differential-expansion channel before removal.
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Confirm that the installed probe and extension cable total the required 5.0 m electrical length.
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De-energize the negative DC supply and place the associated protection channel in its approved maintenance state.
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Label power, common, output and shield conductors before releasing the SpringLoc terminals.
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Inspect the probe connector and DIN-rail retention for contamination, damage or incomplete engagement.
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Keep the signal wiring separated from high-energy conductors and preserve the documented shield termination.
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Set the probe gap within the calibrated linear region before restoring alarms or trips.
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Verify bias voltage, polarity, proportional target response and monitor indication before service release.
Technical notes
Confirm the 5.0 m matched electrical length and DIN-rail mounting before installation. Verify bias, polarity and proportional response after connection.
FAQ View All FAQ
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Which mounting arrangement is specified by Bently Nevada 330850-51-00?The 51 option specifies a 5.0 m system electrical length with DIN-rail mounting.
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How long must the matched transducer chain be for Bently Nevada 330850-51-00?The probe lead and extension cable must total 5.0 m to match the sensor calibration.
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What measurement range does Bently Nevada 330850-51-00 support?The matched 3300 XL 25 mm system provides a 12.7 mm (500 mil) linear measurement range.
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Why is Bently Nevada 330850-51-00 used for differential-expansion monitoring?Its extended linear range and 0.787 V/mm nominal scale factor support long-range rotor-to-casing displacement measurement.
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Which supply should power Bently Nevada 330850-51-00?The sensor requires -17.5 to -26 V DC without barriers or -23 to -26 V DC when barriers are used, at no more than 12 mA.
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Does Bently Nevada 330850-51-00 include an agency-approval selection?No. The final 00 code identifies the no-approvals option.
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How are field conductors connected to Bently Nevada 330850-51-00?SpringLoc terminal strips accept the power, common and output conductors without special installation tools.
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Which commissioning checks confirm Bently Nevada 330850-51-00 operation?Verify the installed gap, bias voltage, polarity, proportional response, monitor indication and configured alarm path.
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