Bently Nevada 330980-70-CN NSv Proximitor Sensor | Replacement, Equivalent & Selection Guide
The Bently Nevada 330980-70-CN is a high-performance NSv (Non-Standard voltage) Proximitor Sensor designed for continuous vibration and position monitoring of rotating machinery. As part of the Bently Nevada 3300 XL series ecosystem, it converts eddy-current probe signals into industry-standard voltage outputs compatible with most DCS, PLC, and condition monitoring systems.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number / SKU | 330980-70-CN |
| Series | Bently Nevada 3300 XL / NSv |
| Type | NSv Proximitor Sensor (Non-Standard Voltage) |
| Supply Voltage | -24 VDC (nominal) |
| Output Signal | -18 VDC to 0 VDC (linear range) |
| Frequency Range | DC to 10,000 Hz |
| Gap Range | 0.25 mm – 2.25 mm (10 – 90 mil) |
| Scale Factor | 7.87 V/mm (200 mV/mil) |
| Operating Temperature | -35°C to +85°C |
| Connector | 2-pin MIL-C-5015 style |
| Housing Material | Stainless Steel |
| Approvals | CE, FM, CSA (refer to datasheet) |
| Weight | Approx. 200 g |
| Country of Origin | USA / CN (variant) |
Compatible Replacement & Equivalent Models
The following models are commonly evaluated as replacements or equivalents for the 330980-70-CN. Always verify electrical and mechanical compatibility before substitution:
- Bently Nevada 330980-51-CN — Standard voltage variant; same housing, different scale factor
- Bently Nevada 330980-90-CN — Extended gap range variant
- Bently Nevada 330930-065-01-CN — 3300 XL 8mm Proximitor, compatible probe pairing
- Bently Nevada 330780-50-CN — 5mm probe system equivalent for tighter installations
- Emerson 330980-70-CN — OEM-equivalent (Emerson acquired Bently Nevada)
- Epro PR6423 Series — Third-party equivalent; verify output scaling
- Metrix ST5484E — Alternative eddy-current proximitor; confirm system compatibility
⚠ Note: Cross-brand substitutions require full system validation. Contact our engineers for a compatibility assessment.
Why Choose the Original Model
- Proven Reliability: Bently Nevada 3300 series is the industry benchmark for turbomachinery protection systems worldwide.
- System Integration: Designed to work seamlessly with Bently Nevada 3500 rack monitors and System 1 software without recalibration.
- Certified Safety: FM/CSA hazardous area approvals ensure compliance in petrochemical and power generation environments.
- Long Service Life: Stainless steel housing and hermetic sealing deliver consistent performance in harsh industrial environments.
- OEM Traceability: Full documentation and calibration certificates available for regulated industries.
Typical Applications
- Steam and gas turbine shaft vibration monitoring
- Compressor radial and axial position measurement
- Pump and motor bearing condition monitoring
- Gearbox and expander rotor dynamics analysis
- Petrochemical plant rotating equipment protection
- Power generation and refinery critical machinery
System Compatibility
The 330980-70-CN Proximitor is designed for use within the following Bently Nevada system architectures:
- Bently Nevada 3500 Series — Machinery Protection System (MPS) rack monitors
- Bently Nevada 3300 Series — Legacy monitoring systems
- System 1 Software — Condition monitoring and diagnostics platform
- Third-party DCS/PLC — Compatible via standard ±voltage analog input cards (verify input impedance ≥ 10 kΩ)
- Emerson DeltaV / Ovation — With appropriate signal conditioning modules
Selection Guide
Use the following criteria to confirm the 330980-70-CN is the correct model for your application:
- Probe Pairing: Must be used with compatible 3300 XL 8mm eddy-current probes (e.g., 330103 or 330104 series) and extension cables.
- Gap Requirement: Optimal for shaft-to-probe gaps of 0.25–2.25 mm. For gaps outside this range, select the 330980-90-CN.
- Voltage Supply: Requires -24 VDC power supply. Confirm your rack or field junction box provides this.
- Output Scaling: NSv output (7.87 V/mm / 200 mV/mil) — confirm your monitor card accepts this scale factor.
- Environment: Rated to 85°C; for higher ambient temperatures, consult Bently Nevada for high-temp variants.
- Hazardous Area: Verify FM/CSA approval class matches your installation zone classification.
Quality Assurance & Sourcing
- ✅ Genuine OEM Parts: Sourced directly from authorized Bently Nevada / Emerson distributors.
- ✅ Inspection & Testing: Each unit undergoes functional verification prior to shipment.
- ✅ Documentation: Certificate of Conformance (CoC) and calibration records available on request.
- ✅ Warranty: 12-month warranty against manufacturing defects.
- ✅ Anti-Counterfeit: All parts traceable to OEM supply chain; counterfeit screening on request.
- ✅ Stock Availability: In-stock and ready to ship; expedited delivery available for critical shutdowns.
How to Order
-
Confirm Part Number: Verify
330980-70-CNmatches your existing system tag or nameplate. - Specify Quantity: Single units or bulk orders accepted.
- Request a Quote: Contact us via email or phone for volume pricing and lead time.
- Submit PO: Purchase orders accepted from registered companies; T/T, L/C, and PayPal accepted.
- Shipping: DHL / FedEx / UPS express worldwide; sea freight available for bulk orders.
📧 Email: support@konmask.com
📞 Phone/WhatsApp: +0086 19859288691
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Replacement & Compatibility FAQ
Q: Can I use the 330980-70-CN as a direct drop-in replacement for the 330980-51-CN?
A: Not directly. The -51-CN is a standard voltage variant with a different scale factor. You must reconfigure the monitor card input scaling if substituting.
Q: Is the 330980-70-CN compatible with non-Bently Nevada monitors?
A: Yes, provided the third-party monitor accepts a -18 VDC to 0 VDC analog input with ≥10 kΩ impedance and supports 200 mV/mil scaling.
Q: What probe and cable must be paired with this Proximitor?
A: Use Bently Nevada 3300 XL 8mm probes (e.g., 330103-00-06-10-02-CN) with matching extension cables. Mismatched probe systems will cause calibration errors.
Q: Do you supply calibration certificates?
A: Yes. CoC and calibration documentation are available upon request at no additional charge.
Q: Can you source obsolete or discontinued Bently Nevada parts?
A: Yes. Konmask.com specializes in sourcing legacy and hard-to-find industrial automation components. Contact us with your part number.
Q: What is the lead time for the 330980-70-CN?
A: In-stock units ship within 1–3 business days. Out-of-stock items typically have a 2–4 week lead time.
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