Introduction to the 330140-08-30-11-05
When machinery vibration threatens uptime, precise measurement becomes critical. The Bently Nevada 330140-08-30-11-05, a 3300 XL 8 mm probe without armor, delivers the accuracy and durability that rotating equipment demands. This sensor is designed for permanent installation in harsh industrial environments, providing continuous shaft vibration and position data.
Manufactured in the U.S.A., this probe combines proven eddy-current technology with rugged construction. Its 8 mm diameter and PPS probe tip offer a thicker encapsulation of the coil, resulting in a more robust sensor that withstands physical abuse better than smaller probes. For engineers seeking reliable vibration monitoring, this model represents a solid choice.
Key Technical Specifications
The 330140-08-30-11-05 is configured with an overall case length of 0.8 inches and a total length of 3.0 meters. This length suits many standard machine train installations, providing flexibility in routing the cable to the monitor rack.
Its electrical performance is defined by a nominal probe DC resistance of 8.17 ± 0.50 ohms, measured from center conductor to outer conductor. The incremental scale factor (ISF) is 7.87 V/mm (200 mV/mil) ± 5% for standard 5 or 1 meter systems, ensuring consistent voltage output per unit of displacement. This linearity is maintained over the 80 mil linear range from 0°C to +45°C (+32°F to +113°F).
Deviation from the best fit straight line (DSL) is less than ±0.025 mm (±1 mil) for standard 5 or 1 meter systems, indicating excellent linearity for precise measurements. The probe operates across a wide temperature range: -52°C to +177°C (-62°F to +350°F) for standard probes, making it suitable for most industrial environments.
Design and Build Quality
The probe tip is molded from polyphenylene sulfide (PPS), a high-performance thermoplastic known for its strength and chemical resistance. The probe case is made of AISI 303 or 304 stainless steel (SST), providing excellent corrosion resistance and structural integrity. The probe weighs 323 g/m (11.4 oz), a manageable weight for installation.
A patented TipLoc molding method creates a robust bond between the probe tip and body, while the CableLoc design delivers 330 N (75 lbf) pull strength. This ensures the cable remains securely attached even under mechanical stress. The optional FluidLoc cable option prevents oil and other liquids from leaking out of the machine through the cable's interior, a critical feature for applications where fluid ingress is a concern.
Applications in Vibration Monitoring
In turbomachinery, the 330140-08-30-11-05 is commonly used to monitor radial shaft vibration and axial position. Its 8 mm size and robust construction make it ideal for large rotating equipment such as steam turbines, compressors, and generators. The probe's linear output over a wide range allows for accurate detection of shaft displacement, helping to prevent catastrophic failures.
For example, in a typical petrochemical plant, this probe can be installed on a centrifugal compressor to continuously monitor shaft vibration. The data feeds into a vibration monitoring system that triggers alarms when vibration levels exceed safe thresholds, enabling predictive maintenance and reducing unplanned downtime.
Another application is in hydroelectric power plants, where the probe monitors the thrust bearing wear by measuring axial shaft position. The wide temperature range and robust sealing make it suitable for the demanding conditions found in these facilities.
Agency Approvals and Compliance
The 330140-08-30-11-05 carries CSA, ATEX, and IECEx approvals, as indicated by the agency approval option 05. These certifications confirm its suitability for use in potentially explosive atmospheres, meeting international safety standards. This is a key consideration for installations in oil and gas, chemical, and other hazardous industries.
These approvals also simplify global procurement and maintenance, as the same probe can be used across multiple sites without additional certification requirements. This reduces inventory complexity and ensures compliance with local regulations.
Why Choose BluePLC Industrial
BluePLC Industrial specializes in supplying genuine industrial automation spare parts, including the Bently Nevada 330140-08-30-11-05. We understand the critical nature of vibration monitoring and offer competitive pricing and reliable delivery. Our team can assist with product selection and provide technical support to ensure you get the right part for your application.
With a focus on quality and customer satisfaction, BluePLC Industrial is your trusted partner for maintaining the reliability of your rotating machinery. Contact us today to inquire about availability and pricing.
Frequently Asked Questions
What is the part number and brand of this probe?
The part number is 330140-08-30-11-05, and it is manufactured by Bently Nevada. It is a 3300 XL 8 mm probe without armor, made in the U.S.A.
What are the key dimensions of this probe?
The overall case length is 0.8 inches, and the total length is 3.0 meters. These dimensions are specified in the part number configuration.
What is the nominal DC resistance of the probe?
The nominal probe DC resistance is 8.17 ± 0.50 ohms, measured from the center conductor to the outer conductor.
What is the incremental scale factor (ISF)?
The ISF is 7.87 V/mm (200 mV/mil) ± 5% for standard 5 or 1 meter systems, measured over the 80 mil linear range from 0°C to +45°C.
What agency approvals does this probe have?
The probe has CSA, ATEX, and IECEx approvals, making it suitable for use in hazardous areas.
Conclusion
The Bently Nevada 330140-08-30-11-05 is a robust, high-performance 8 mm probe designed for reliable vibration monitoring in demanding industrial environments. Its rugged construction, precise electrical characteristics, and international approvals make it a dependable choice for protecting critical rotating machinery.
For procurement or technical inquiries, contact BluePLC Industrial to ensure you receive genuine parts and expert support. Investing in quality monitoring components like this probe helps minimize downtime and extend equipment life.
