The Bently Nevada 21505-00-60-10-02 is a rugged 8 mm proximity probe designed for non-contact vibration and position measurement in demanding industrial environments. As part of the 7200 Proximity Transducer Systems, this probe offers reliable shaft relative vibration data for critical rotating machinery like steam turbines, gas compressors, and large pumps. Its stainless steel lead armor provides extra protection against mechanical damage during installation and operation.
The 21505-00-60-10-02 features an 8 mm tip diameter with standard case configuration and 3/8-24 threads. The unthreaded length option is 0 mm (00 suffix), while the overall case length measures 6.0 inches (60 suffix). Total length comes to 1.0 metre (39 inches) with a tolerance of +0.25 metre and -0.10 metre. This model includes a miniature male coaxial connector (02 suffix) and stainless steel lead armor for enhanced cable durability.
For output performance, this probe delivers a calibrated range of 80 mils (2.0 mm), beginning at approximately 10 mils (0.25 mm) from the probe face. The scale factor is 200 mV/mil (7.87 V/mm) with ±4% accuracy when calibrated as a system. Linearity remains within 0.8 mils (0.02 mm) of a 200 mV/mil straight line under system calibration. Frequency response spans from 0 to 10 kHz (0 to 600,000 cpm), with only -5% deviation at the upper limit.
Unlike the standard 21504 model, the 21505-00-60-10-02 includes stainless steel lead armor as a key differentiator. This armor shields the cable from abrasion, crushing, and sharp edge contact, making it ideal for installations with tight clearances or exposed cable runs. The armor also improves resistance to vibration-induced wear over extended service periods. Therefore, this model is particularly well-suited for retrofit projects and harsh outdoor environments.
This probe requires an input power of -17.5 Vdc to -26 Vdc at 12 mA maximum consumption. The operating temperature range for the Proximitor is -60°F to +212°F (-51°C to +100°C), while the probe and extension cable withstand -30°F to +350°F (-34°C to +177°C). Relative humidity tolerance reaches up to 95%, non-condensing.
Additionally, the Bently Nevada 21505 probe offers excellent corrosion resistance. Its operation remains unaffected by direct contact with air, water, lube oil, ammonium hydroxide, sulfuric acid (10%), MEK (methyl-ethyl ketone), or DMF (dimethylformamide). This chemical compatibility makes it highly suitable for refineries, chemical plants, and offshore platforms.
Temperature sensitivity for this model is typically -3% change in scale factor at +150°F (+65°C) at a 50 mil gap (1.27 mm). When calibrated as a system, the probe maintains ±9.5% accuracy including interchangeability errors. Linearity including interchangeability errors stays within 2.3 mils (0.06 mm) of a 200 mV/mil straight line. Therefore, the 21505-00-60-10-02 delivers consistent performance even under fluctuating thermal conditions.
The probe connects seamlessly with Bently Nevada Proximitor and extension cables. Its miniature coaxial connector ensures secure signal transmission while minimizing noise interference. For optimal results, always calibrate the probe, cable, and Proximitor as a complete system.
Proper installation begins with cleaning the threaded hole and applying anti-seize compound to the 3/8-24 threads. Carefully insert the probe until the tip reaches the desired air gap, typically between 10 and 80 mils for best linearity. When routing the armored cable, avoid sharp bends and secure it with suitable clamps to prevent strain on the connector. Tighten the locking nut to the recommended torque to prevent probe movement during machine operation.
The 1.0-metre total length provides flexibility for most mounting configurations. Extension cables are available if longer runs are needed. Always verify the probe's serial number and part number are visible for proper documentation.
1 x Bently Nevada 21505-00-60-10-02 proximity probe (8mm, with stainless steel lead armor and miniature male coaxial connector)
1 x Locking nut (3/8-24 thread)
1 x Protective cap for shipping
1 x Installation instruction sheet
Shipping Method : FedEx, UPS, or DHL (door-to-door delivery)
1. What is the main difference between 21504 and 21505 models?
The 21505-00-60-10-02 includes stainless steel lead armor for extra cable protection, whereas the 21504 series does not have armor.
2. What is the total cable length of this probe?
The total length is 1.0 metre (39 inches) with a tolerance of +0.25 metre and -0.10 metre.
3. What connector type does this model use?
It uses a miniature male coaxial connector (suffix 02) for reliable signal connection.
4. Can this probe withstand chemical exposure?
Yes, the probe resists direct contact with 10% sulfuric acid, MEK, DMF, lube oil, water, and several other common industrial chemicals.
5. What is the frequency response range?
The frequency response ranges from 0 to 10 kHz (0 to 600,000 cpm) with -5% deviation at the upper limit.
| Brand Name | |
| Model No. | 21505-00-60-10-02 |
| Product Type | Proximity Probe |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
