Product Details
Configured for direct non-contact dynamic vibration and axial position measurement in machinery protection networks, the Bently Nevada 128987-130-01-CN (128987 Proximity Sensor) provides direct physical/electrical execution.
Suffix Breakdown & Model Matrix
| Option Field | Code | Configuration Detail |
|---|---|---|
| Core Model | 128987 | 3300 XL 8 mm proximity sensor transmitter base series |
| Length / Cable Option | 130 | 13.0 in unthreaded / specific casing sleeve configuration |
| Hardware / Fitting | 01 | Standard mounting hardware and connector options |
| Regional Certification | CN | Certified for Chinese market regulatory standards |
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 128987-130-01-CN |
| Brand | Bently Nevada |
| Origin | USA |
| Weight | 0.45 kg |
| Dimensions | 33.02 cm x 31.75 cm x 5.08 cm (13.00 in x 12.50 in x 2.00 in) |
| Operating Temp | -40 deg C to +85 deg C |
| Power Consumption | Powered via 10 to 30 VDC loop supply |
| Measuring Range | 0.25 to 1.0 mm |
| Accuracy | +/-0.5% of full scale |
| Repeatability | +/-0.2% of full scale |
| Frequency Response | 0 to 10 kHz |
| Output Signal | 4 to 20 mA loop-powered output |
Eddy-Current Probe Scaling and Gap Voltage Validation
The 128987-130-01-CN integrates high-frequency eddy-current probe scaling to translate mechanical shaft displacement into a proportional 4-20 mA analog output signal. Precision driver electronics process raw vibration and static distance signals across a frequency bandwidth extending from 0 to 10 kHz. Mechanical positioning during startup uses DC gap voltage validation against target -10 VDC baseline equivalents to anchor the probe within its calibrated linear operating window, maximizing signal-to-noise ratios and enabling effective cross-talk suppression between adjacent radial probe channels.
Frequently Asked Questions
Q: How is the 4-20 mA current loop output powered on the 128987-130-01-CN transducer?
A: The sensor operates over a 2-wire loop connection requiring an external power supply voltage between 10 VDC and 30 VDC.
Q: What frequency response limit applies to this transmitter configuration?
A: The internal processing circuitry supports a dynamic frequency response range from static DC up to 10 kHz (-3 dB corner).
Field Installation Guidelines
- Mount the probe assembly into the machine casing port using appropriate NPT or metric thread engagement.
- Connect the loop power supply leads to the 4-20 mA terminal block while maintaining correct polarity.
- Verify target gap distance during static installation by checking loop current or raw voltage to confirm alignment within the linear measuring range.
- Route signal cables through dedicated grounded metal conduit away from high-voltage motor supply lines.
- Ground the cable shield at a single termination point inside the monitoring cabinet to avoid ground loop noise.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
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