Bently Nevada 21504-16-28-10-02 Proximity Probe 8mm

Product Introduction

The Bently Nevada 21504-16-28-10-02 stands as a critical component in modern machinery protection systems. This model is a complete 7200 Proximity Transducer System, designed to provide precise, non-contact measurement of shaft vibration and position. It is a new and original unit, sourced directly from the factory. This ensures you receive a reliable sensor ready for immediate installation. Furthermore, its robust design suits various industrial rotating machinery, including turbines, compressors, and pumps. The system delivers a linear output proportional to the target distance, which is vital for predictive maintenance. Therefore, the Bently Nevada 21504-16-28-10-02 helps in avoiding unplanned downtime. This specific configuration includes a 160 mm unthreaded length and a 2.8-inch overall case length, providing flexibility for different mounting requirements. The 1.0-meter total length with a miniature coaxial connector simplifies integration into existing setups. Ultimately, this transducer offers an excellent solution for monitoring critical assets.

Technical Specifications

The Bently Nevada 21504-16-28-10-02 provides accurate, reliable data essential for machinery diagnostics. This section details its key performance parameters.

Input and Output

The system operates on a DC power supply ranging from -17.5 Vdc to -26 Vdc, with a maximum current consumption of 12 mA. Its output is calibrated across a standard range of 80 mils (2.0 mm). Specifically, this measurement begins at approximately 10 mils (0.25 mm) from the probe face. The scale factor is set at 200 mV/mil (7.87 V/mm). When calibrated as a complete system, the accuracy is within ±4%. Moreover, the Bently Nevada 21504-16-28-10-02 shows a linearity within 0.8 mils (0.02 mm) of its straight-line output.

Performance

The 21504-16-28-10-02 is engineered for dynamic measurements, featuring a frequency response from 0 to 10 kHz (0 to 600,000 cpm). At the upper limit of 10 kHz, the response is within -5%. Temperature sensitivity is also minimal, with a typical change of -3% in scale factor at +150°F (+65°C). This stable performance ensures the probe remains accurate under varying operational conditions.

Mechanical and Environmental Limits

The construction of the Bently Nevada 21504-16-28-10-02 allows it to perform in demanding industrial settings.

Physical Specifications

This model has a tip diameter of 8 mm and features standard 3/8-24 threads for installation. It does not include lead armor. The case length is 2.8 inches (Option 28), and the unthreaded length is 160 mm (Option 16). The total length, including the cable and connector, is 1.0 metre, with a specific tolerance of +.25 metre and -.10 metre.

Environmental Resistance

Operating temperatures vary by component. The Proximitor operates effectively from -60°F to +212°F (-51°C to +100°C). Meanwhile, the probe and extension cable can withstand temperatures from -30°F to +350°F (-34°C to +177°C). Additionally, the system is corrosion-resistant; direct contact with air, water, lube oil, and various chemicals does not affect its operation. The unit also functions reliably in relative humidity up to 95%, non-condensing.

Installation and Setup Guide

Proper installation is crucial for the optimal performance of the Bently Nevada 21504-16-28-10-02. Following these guidelines ensures accurate and reliable measurements.

Mounting Procedure

First, select a suitable mounting location on the machine housing. The standard 3/8-24 threads allow for secure attachment using a compatible mounting fixture. Subsequently, ensure the target surface is clean and within the specified measurement range, beginning at approximately 10 mils from the probe face.

Electrical Connection

After mechanical mounting, connect the system's power supply. The unit requires a clean DC source between -17.5 Vdc and -26 Vdc. Then, connect the output signal to your monitoring system using the provided miniature male coaxial connector (Option 02). Finally, verify all connections are tight and correctly polarized before powering up the system.

Packaging and Shipping

When you order the Bently Nevada 21504-16-28-10-02, it arrives in its original factory packaging. This packaging is designed to protect the sensitive transducer during transit. The shipment includes the complete Proximitor and probe assembly as configured. It is prepared to ensure safe delivery to your facility. We exclusively ship all orders using premium carriers: Fedex, UPS, and DHL. This ensures fast and trackable delivery.

Packaging List

• 1 x Bently Nevada 21504 Proximitor

• 1 x 8mm Probe Assembly (as configured)

• 1 x Installation Guide

Frequently Asked Questions (FAQ)

1. What is the primary use of the Bently Nevada 21504-16-28-10-02?
This model is a proximity probe used to measure shaft vibration and position in rotating machinery. It provides a DC signal proportional to the distance between the probe tip and the target surface, which is essential for monitoring machine health and preventing failures.

2. What is the calibrated measurement range for the 21504-16-28-10-02?
The Bently Nevada 21504-16-28-10-02 has a calibrated range of 80 mils (2.0 mm). This measurement range begins at approximately 10 mils (0.25 mm) from the probe face, allowing for a set air gap before the linear range starts.

3. Can the 21504 probe be used in hazardous or corrosive environments?
Yes, the 8 mm probe is corrosion-resistant. Its operation is not affected by direct contact with common industrial substances such as air, water, lube oil, and even mild chemicals like 10% sulfuric acid. However, always confirm compatibility with specific chemicals in your application.

4. What are the cable length and connector options for this model?
This specific configuration, 21504-16-28-10-02, includes a 1.0-metre total length cable. It also features a miniature male coaxial connector (Option 02) for easy and secure connection to the monitoring system.

5. How should the 21504-16-28-10-02 be shipped?
All units are shipped in new and original factory packaging to ensure maximum protection during transit. We use reliable global carriers such as Fedex, UPS, and DHL to provide timely and trackable delivery.