Bently Nevada 21747-040-00 Proximity Probe Extension Cable

Product Description

The Bently Nevada 21747-040-00 is a 4-meter proximity probe extension cable engineered for precision signal transmission in 7200 and 3300 XL Proximity Transducer Systems. Designed for demanding industrial environments, it ensures accurate vibration and shaft position measurements across turbines, compressors, pumps, and other critical rotating machinery. Moreover, its robust coaxial design maintains signal integrity, even under high-temperature or electrically noisy conditions.

This extension cable allows flexible installation by extending the connection between a proximity probe and its Proximitor® sensor without sacrificing accuracy. In addition, factory calibration guarantees consistent performance, supporting API 670-compliant machinery protection systems. With a wide operating temperature range and durable construction, it provides reliable, long-term operation in harsh industrial applications.

Key Features

• Factory-calibrated to ensure precise signal transmission with compatible probes and sensors.

• 4-meter length provides installation flexibility for complex machinery layouts.

• Durable coaxial design resists interference and ensures signal integrity.

• Supports both static shaft position (gap) and dynamic vibration monitoring.

• Wide operating temperature range: –34 °C to +177 °C for industrial environments.

• Enables compliance with API 670 standards for machinery protection.

Technical Specifications

• Manufacturer: Bently Nevada

• Model Number: 21747-040-00

• Product Type: Proximity Probe Extension Cable

• Cable Length: 4.0 meters (157 inches)

• Armor Option: Without armor

• Signal Sensitivity: 200 mV/mil

• Linear Range: 0–80 mils (0–2 mm)

• Accuracy: ±4% when properly configured

• Operating Temperature: –34 °C to +177 °C

• Weight: 0.4 lbs

Typical Applications

• Steam and gas turbines requiring precise shaft vibration monitoring.

• Compressors and pumps with fluid-film bearings in petrochemical plants.

• Industrial motors and fans where probe-to-sensor distance requires extension.

• Any rotating machinery where reliable signal integrity is critical.

FAQ

Q: Is this cable compatible with all Bently Nevada probes?
A: The 21747-040-00 works specifically with 7200 and 3300 XL Proximity Transducer Systems.

Q: Can it operate in extreme temperatures?
A: Yes, the cable functions reliably between –34 °C and +177 °C.

Q: Does it maintain API 670 compliance?
A: Yes, it supports systems designed to meet API 670 machinery protection standards.

Q: Is factory calibration required before use?
A: No, it comes factory-calibrated for immediate installation and operation.