Bently Nevada 21747-075-00 7.5m Extension Cable

Bently Nevada 21747-075-00 7.5m Extension Cable

Product Introduction

The Bently Nevada 21747-075-00 is a precision extension cable engineered specifically for 7200 Proximity Transducer Systems. This 7.5 metre (295 inches) cable serves as the critical link between the probe and the Proximitor, thereby completing the measurement chain. It is manufactured without armor (option 00), making it suitable for installations where cable routing does not expose it to severe mechanical risks.

This extension cable works seamlessly with probes that have integral leads of matching lengths. For instance, the combination of probe and extension cable achieves a total system length of either five or nine metres from the probe tip to the Proximitor. Moreover, this standardized approach ensures compatibility and interchangeability across different system components.

The 21747-075-00 maintains signal integrity across its entire length. Furthermore, it supports the full frequency response range of the 7200 system, from 0 to 10 kHz. Therefore, it delivers accurate vibration data without any signal degradation.

Technical Specifications

The Bently Nevada 21747-075-00 extension cable is manufactured to meet rigorous performance standards. Specifically, its electrical characteristics are precisely matched to the requirements of 7200 probes and Proximitors. Additionally, the cable transmits both power and signal between components with minimal loss or interference.

When used with compatible probes, the complete system achieves a calibrated range of 80 mils (2.0 mm) . Meanwhile, the scale factor remains 200 mV/mil (7.87 V/mm) with ±4% accuracy for system calibration. Linearity is maintained at within 0.8 mils for system calibration. Besides these specifications, the frequency response spans 0 to 10 kHz, with only -5% deviation at the upper limit.

The cable supports power input from -17.5 Vdc to -26 Vdc at 12 mA maximum consumption. In addition, temperature sensitivity of the complete system shows a typical -396 change in scale factor at +150°F and 50 mils gap.

Environmental Ratings

The 21747-075-00 extension cable operates reliably across a broad temperature range. First, it withstands temperatures from -30°F to +350°F (-34°C to +177°C) . Next, this wide range makes it suitable for both cold and high-heat environments. Finally, the cable's robust construction ensures consistent performance under thermal stress.

Relative humidity tolerance reaches 95% non-condensing, thereby allowing deployment in humid conditions without any performance issues. For systems using 8 mm probes, the cable contributes to overall corrosion resistance. Consequently, the complete system resists air, water, lube oil, ammonium hydroxide, 10% sulfuric acid, MEK, and DMF.

System Compatibility

This extension cable is purpose-built for seamless integration with 7200 Proximity Transducer Systems. Specifically, it matches probes with integral leads of corresponding lengths. Moreover, probes and cables with the same length, along with Proximitors sharing the same part number, are completely interchangeable.

The total system length is determined by the sum of the probe's integral lead and the extension cable. For the 21747-075-00, a 7.5 metre cable combines with a probe of appropriate lead length to achieve either a 5 metre or 9 metre total system length. As a result, this modular design simplifies replacement and maintenance procedures.

For installations requiring additional cable protection, stainless steel armor is available as an option. However, this specific model, 21747-075-00, is ordered without armor. Therefore, it is lighter and more flexible for routing through standard cable trays and conduits.

Installation Guidelines

Installing the 21747-075-00 extension cable involves several straightforward steps. First, ensure the probe's integral lead length matches the extension cable to achieve the intended total system length. Next, connect the cable to the probe connector and the Proximitor input.

Then, route the cable through appropriate cable trays or conduits. Meanwhile, avoid sharp bends that could stress the cable or affect signal quality. Finally, secure the cable with appropriate ties or clamps to prevent movement during machine operation.

Packaging List

• Bently Nevada 21747-075-00 Extension Cable, 7.5 metres (1 unit)

Frequently Asked Questions (FAQ)

Q1: What is the length of the 21747-075-00 extension cable?
A1: This cable measures 7.5 metres (295 inches) , as indicated by the 075 option.

Q2: Does this cable include armor protection?
A2: No, the 00 armor option means this cable is supplied without armor.

Q3: What total system length does this cable support?
A3: It combines with a matching probe to achieve a total length of 5 or 9 metres from probe tip to Proximitor.

Q4: What is the operating temperature range for this cable?
A4: The 21747-075-00 operates from -30°F to +350°F (-34°C to +177°C) .

Q5: Are probes and cables interchangeable with this system?
A5: Yes, probes and cables with matching lengths and Proximitors with the same part number are completely interchangeable .