21747-045-01 | Bently Nevada 4.5m Extension Cable

What Makes the Bently Nevada 21747-045-01 Extension Cable Essential?

When vibration monitoring systems face signal degradation or physical damage, the 21747-045-01 from Bently Nevada provides a robust solution. This extension cable ensures accurate data transfer between probe and Proximitor, maintaining system integrity in harsh conditions.

Engineered for industrial reliability, the 21747-045-01 features a 4.50-meter (177 inches) length and optional stainless steel armor. This design offers improved resistance to physical abuse, reducing downtime and maintenance costs.

Key Features and Technical Specifications

• Model: 21747 - Extension Cable
• Cable Length: 4.50 meters (177 inches)
• Armor Option: 01 - With armor
• Power: -17.5 Vdc to -26 Vdc at 12 mA maximum consumption
• Calibrated Range: 80 mils (2.0 mm), begins at approximately 10 mils (0.25 mm) from probe face
• Scale Factor: 200 mV/mil (7.87 V/mm), ±4% if calibrated as a system
• Linearity: Within 0.8 mils (0.02 mm) of a 200 mV/mil straight line if calibrated as a system
• Frequency Response: 0 to 10 kHz (0 to 600,000 cpm); -5% at 10 kHz
• Temperature Sensitivity: Typically -3% change in scale factor at +150°F (+65°C) at 50 mils gap (1.27 mm)
• Operating Temperature (Proximitor): -60°F to +212°F (-51°C to +100°C)
• Operating Temperature (Probe and Extension Cable): -30°F to +350°F (-34°C to +177°C)
• Relative Humidity: To 95%, noncondensing

The 21747-045-01 is designed to achieve a system length of either five or nine meters from probe tip to Proximitor. Probes and cables of the same length, and Proximitors with the same part number, are completely interchangeable, simplifying replacement and maintenance.

Industry Applications and Use Cases

In rotating machinery monitoring, the 21747-045-01 ensures reliable signal transmission in applications such as turbines, compressors, and pumps. Its stainless steel armor provides enhanced protection in environments where cables may be exposed to physical abuse. This makes it ideal for retrofitting existing systems or upgrading to higher reliability standards.

Installation and Setup

Proper installation is critical for optimal performance. Ensure the extension cable is routed away from sharp edges and excessive heat sources. The armor option provides additional protection, but careful handling during installation is still recommended. Verify that the cable length matches the system requirements to maintain the correct probe-to-Proximitor distance.

Maintenance and Reliability

Regular inspection of the extension cable for wear, cuts, or abrasion is essential. The stainless steel armor significantly improves resistance to physical abuse, extending service life. In environments with high humidity (up to 95% noncondensing), the cable's design ensures reliable operation. Periodic checks of the cable connections and condition help prevent unexpected failures.

Compatibility and Integration

The 21747-045-01 is part of the Bently Nevada 21747 series, designed to work with compatible probes and Proximitors. For specific compatibility details, refer to the official Bently Nevada documentation or contact Petro Auto Tech.

Troubleshooting Common Issues

If signal loss or intermittent readings occur, inspect the cable for damage or loose connections. Verify that the cable length is correct for the system configuration. Ensure the armor is intact and not pinching the cable. If issues persist, consult the manufacturer's guidelines.

Frequently Asked Questions

Q: What is the length of the 21747-045-01 extension cable?

A: The cable length is 4.50 meters (177 inches).

Q: Does the 21747-045-01 come with armor?

A: Yes, the armor option is 01, meaning it includes stainless steel armor for added protection.

Q: What is the operating temperature range for the extension cable?

A: The operating temperature range is -30°F to +350°F (-34°C to +177°C).

Q: What is the power consumption of the 21747-045-01?

A: The power consumption is -17.5 Vdc to -26 Vdc at 12 mA maximum.

Q: Is the 21747-045-01 interchangeable with other cables?

A: Probes and cables of the same length, and Proximitors with the same part number, are completely interchangeable.

Product Support and Availability

The Bently Nevada 21747-045-01 is available from Petro Auto Tech as a new, original factory-packed unit. Contact Petro Auto Tech for current availability and ordering information.