21505-000-016-10-02 8mm Vibration Sensor Bently Nevada

21505-000-016-10-02 8mm Vibration Sensor with Armored Lead

Product Introduction

The 21505-000-016-10-02 is a robust member of Bently Nevada’s 7200 series. This proximity transducer system measures shaft displacement in turbines, compressors, and pumps. It features an 8-mm tip diameter and a stainless steel lead armor, offering extra protection in harsh industrial environments. The calibrated range spans 80 mils, beginning at 10 mils from the probe face. With a scale factor of 200 mV/mil, it provides high-resolution vibration data. The unit includes a miniature male coaxial connector (Option 02) for secure signal transmission. Additionally, the overall case length is 160 mm, and the total cable length is 1.0 meter. This sensor excels in continuous monitoring where durability and accuracy are paramount.

Technical Specifications

The Bently Nevada 21505-000-016-10-02 accepts a DC input from -17.5 V to -26 V, with a maximum current draw of 12 mA. Its output scale factor is 200 mV/mil (±4% when system-calibrated), and linearity stays within 0.8 mils under system calibration. Frequency response covers 0 to 10 kHz, with only a -5% drop at 10 kHz. Temperature sensitivity shifts by -3% at +150°F (+65°C) and 50-mil gap. The unthreaded length is 0 mm, and the overall case length measures 160 mm. This model comes with a miniature male coaxial connector, simplifying integration with existing monitoring systems. The probe diameter remains 8 mm, and the standard case uses rugged materials. Moreover, the lead armor provides extra mechanical protection.

Mechanical and Environmental Limits

This Bently Nevada probe withstands extreme conditions. The Proximitor operates from -60°F to +212°F, while the probe and cable handle -30°F to +350°F. Relative humidity up to 95% non-condensing is acceptable. Furthermore, the 8-mm probe resists corrosion from air, water, lube oil, ammonium hydroxide, 10% sulfuric acid, MEK, and DMF. The total system weight is 1.3 lbs (0.59 kg). These features make the 21505-000-016-10-02 suitable for steam turbines, centrifugal compressors, and large fans.

Installation Guidelines

Mount the 21505-000-016-10-02 using the 3/8-24 thread, ensuring the gap falls within the 10-to-90 mil range for optimal linearity. First, clean the mounting bracket thoroughly to prevent false signals. Next, connect the miniature coaxial connector to the matching extension cable. Then, secure the armored lead with appropriate clamps to avoid strain. For best accuracy, calibrate the entire system—probe, cable, and Proximitor—together. Finally, power the unit with a stable -24 Vdc supply, respecting the 12 mA limit. Avoid routing the cable near high-voltage lines to minimize interference.

Packaging and Shipping

Your order for the 21505-000-016-10-02 includes one Proximity Probe with armored lead, one Proximitor, and one extension cable with matching coaxial connectors. The package also contains mounting hardware and a quick-start guide. All components arrive in factory-sealed anti-static packaging. We ship via FedEx, UPS, or DHL with full tracking and insurance. Delivery usually takes 3–5 business days, depending on your location.

Frequently Asked Questions

Q1: What is the calibrated range of the 21505-000-016-10-02?
A1: The calibrated range is 80 mils (2.0 mm), starting at 10 mils from the probe face.

Q2: Does this probe include a connector?
A2: Yes, it comes with a miniature male coaxial connector (Option 02) for easy connection.

Q3: What is the purpose of the lead armor?
A3: The stainless steel armor protects the cable from mechanical damage and abrasion in tough environments.

Q4: Can I use this probe with a -24 Vdc power supply?
A4: Yes, the input range is -17.5 Vdc to -26 Vdc, so -24 Vdc works perfectly.

Q5: Is the 21505-000-016-10-02 interchangeable with other 8mm probes?
A5: Yes, but interchangeability may widen linearity to ±2.3 mils. For best performance, calibrate the complete system.