Introduction
The Bently Nevada 125065-30 is a dedicated Velomitor interconnect cable designed to connect compatible Bently Nevada Velomitor piezo-velocity sensors with vibration monitoring equipment.
This cable belongs to the 125065 cable family, which uses a 2-conductor, 18 AWG twisted and shielded construction, with a two-socket plug and fluorosilicone elastomer boot at one end and terminal lugs at the other. The “30” configuration corresponds to a 30 ft cable length, approximately 9.0 m.
For industrial vibration-monitoring installations, cable selection is not simply a matter of matching length. Connector style, conductor configuration, shielding, environmental protection, and compatibility with the selected Velomitor sensor all influence signal reliability. The 125065-30 provides a purpose-built connection between the sensor and compatible monitoring equipment, making it a practical choice for maintenance replacements and new monitoring installations.
The cable is particularly useful where the sensor and monitoring cabinet are separated by a moderate distance and a flexible, shielded connection is required.
Technical Specifications
The 125065 series is available in multiple standard lengths, with the final two digits identifying the requested cable length in feet. The -30 version therefore represents a 30 ft configuration. Standard lengths in the same family include 6, 8, 10, 12, 15, 17, 20, 25, 30, 33, 50, and 99 ft, while custom lengths can also be ordered within the specified range.
| Specification | Details |
|---|
| Manufacturer | Bently Nevada |
| Part Number | 125065-30 |
| Product Type | Velomitor Interconnect Cable |
| Cable Family | 125065 |
| Cable Length | 30 ft / approximately 9.0 m |
| Conductors | 2 conductors |
| Conductor Size | 18 AWG |
| Cable Construction | Twisted, shielded pair |
| Sensor-End Connector | 2-socket plug |
| Connector Protection | Fluorosilicone elastomer boot |
| Equipment-End Termination | Terminal lugs |
| Primary Use | Velomitor sensor-to-monitor connection |
| Compatible Sensor Family | Bently Nevada Velomitor piezo-velocity sensors |
| Typical Sensor | 330500 Velomitor |
| Housing Compatibility | Not intended for 21128 housing applications |
| Cable Type | Shielded instrumentation cable |
| Overall Length | Approximately 9.0 m |
| Cable Diameter | Configuration-dependent |
| Approximate Net Weight | Not consistently specified; depends on cable construction and termination |
| Shipping Weight | Dependent on packaging |
Applications
Velomitor Vibration Monitoring
The primary application of the 125065-30 is connecting a compatible Velomitor piezo-velocity sensor to vibration-monitoring equipment. It provides the electrical path required to transfer the sensor signal to the monitoring system.
Industrial Rotating Machinery
Velomitor sensors are commonly used for vibration measurement on rotating equipment. The cable can therefore be applied to pumps, motors, fans, compressors, turbines, and other machinery where vibration monitoring is required.
Remote Sensor Installations
With a 30 ft / 9 m length, the 125065-30 is useful when the sensor is installed some distance away from the monitoring cabinet. It provides additional routing flexibility without requiring an excessively long cable.
Machinery Condition Monitoring
The cable can form part of a permanent condition-monitoring installation where vibration data from the Velomitor sensor is continuously transmitted to compatible monitoring equipment.
Maintenance Replacement
A damaged, aged, or improperly terminated cable can affect the quality of a vibration signal. Replacing the existing cable with the correct 125065 configuration can restore the intended connection without replacing the sensor itself.
Plant Retrofit Projects
The cable can also be useful when expanding an existing vibration-monitoring system and the new sensor location requires a defined connection distance to the monitoring equipment.
Advantages
Purpose-Built Velomitor Connection
The 125065-30 is designed specifically as part of the Velomitor interconnection system rather than being a generic instrumentation cable. This makes it a straightforward choice when maintaining a compatible Bently Nevada installation.
18 AWG Shielded Construction
The 2-conductor, 18 AWG twisted and shielded construction provides a suitable signal-transmission arrangement for compatible Velomitor applications. Shielding also helps reduce susceptibility to electrical interference in industrial environments.
30-Foot Reach
The 30 ft / 9.0 m length provides useful flexibility for installations where the sensor and monitor are not positioned close together.
Fluorosilicone Connector Boot
The sensor-side connector incorporates a fluorosilicone elastomer boot, adding protection around the connector interface and helping the cable withstand demanding industrial service conditions.
Predefined Termination Arrangement
The cable uses a two-socket connector at one end and terminal lugs at the other. This clearly defined termination arrangement simplifies identification during maintenance and wiring work.
Multiple Length Options
The broader 125065 family supports numerous standard lengths from short local runs to much longer installations. This gives maintenance teams a consistent cable family when different machines require different routing distances.
Suitable for Continuous Monitoring
When correctly installed, the cable supports permanent connection between a Velomitor sensor and compatible monitoring equipment, making it appropriate for continuous machinery condition-monitoring systems.
Practical Spare-Part Choice
Because the complete part number identifies the cable family and length, 125065-30 is easy to specify when replacing an existing 30 ft cable without changing the surrounding monitoring architecture.
Technical FAQs
1. What is the Bently Nevada 125065-30?
The 125065-30 is a Bently Nevada Velomitor interconnect cable used to connect compatible Velomitor piezo-velocity sensors with vibration-monitoring equipment.
2. How long is the 125065-30 cable?
It is a 30 ft cable, equivalent to approximately 9.0 meters.
3. What type of conductors does it use?
The cable contains two 18 AWG conductors arranged as a twisted, shielded pair.
4. What connector is used on the sensor end?
The sensor end uses a two-socket plug with a fluorosilicone elastomer boot. The opposite end is terminated with terminal lugs.
5. Which Velomitor sensor is it used with?
The 125065 cable family is associated with Bently Nevada Velomitor piezo-velocity sensors, including the 330500 Velomitor family.
6. Can the 125065-30 be used with the 21128 Velocity Transducer Housing?
No. The 125065 cable is specified for use with monitors and is not intended for the 21128 Velocity Transducer Housing. For a 21128 housing installation, the specified cable family is 89477.
7. What is the maximum length available in the 125065 family?
The documented maximum length is 99 ft (30 m), with standard lengths available at several intermediate values. Custom lengths can also be specified within the applicable range.
8. What are the dimensions and weight of the 125065-30?
The principal dimensional specification is its 30 ft / approximately 9.0 m overall cable length. The exact cable diameter and net weight are not consistently specified for the individual -30 configuration, so they should be confirmed from the supplied cable assembly or applicable engineering documentation rather than estimated.
9. Why is the cable shield important?
A shielded construction helps reduce the influence of electrical noise and interference on low-level vibration signals. Proper shield termination and installation practices remain important for achieving the intended signal quality.
10. Can another Bently Nevada cable replace the 125065-30?
Not automatically. Bently Nevada offers several Velomitor cable families, including 9571, 84661, 89477, and 125065, with differences in conductor size, connector style, shielding, armor, and housing compatibility. The replacement should match the installed sensor and monitoring architecture.
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