Bently Nevada 190501-01-99-CN Velomitor CT Transducer

Bently Nevada 190501-01-99-CN Velomitor CT Velocity Transducer

Product Introduction

The Bently Nevada 190501-01-99-CN is a high-performance velocity transducer for permanent vibration monitoring on rotating machinery. Specifically, this Velomitor CT model features a top-exit design with an integral 32-foot cable and a 3/8-24 stud. Consequently, it delivers reliable data for predictive maintenance and machine protection systems.

Key Technical Specifications

The 190501-01-99-CN offers precise electrical characteristics for accurate vibration measurement. First, its sensitivity reaches 3.94 mV/mm/s (100 mV/in/s) ±5% . Second, the frequency response spans 3.0 Hz to 900 Hz (180 to 54,000 cpm) ±1.0 dB, with an extended range of 1.5 Hz to 1.0 kHz at ±3.0 dB.

Additionally, this sensor features a typical output bias voltage of 10.1 Vdc ± 1.0 Vdc on Pin A relative to Pin B. Meanwhile, its dynamic output impedance stays below 400 Ω. Furthermore, the amplitude linearity remains within ±2% up to 63.5 mm/s peak. Moreover, the mounted resonant frequency reaches 9 kHz minimum when stud mounted.

Environmental and Mechanical Durability

This transducer operates reliably under extreme conditions. For instance, the operating temperature range spans from -40°C to +85°C, while storage allows up to +100°C. Likewise, it withstands a maximum shock limit of 5000 g peak. Additionally, the case uses 316L stainless steel, ensuring corrosion resistance in harsh environments.

Besides that, the Bently Nevada 190501-01-99-CN is fully sealed against humidity, handling 100% condensing conditions without submersion. Furthermore, its magnetic field susceptibility is extremely low at <0.0068 mm/s/gauss. Meanwhile, the internal electronics are isolated from the case, which simplifies grounding and reduces noise.

Integral Cable and Connection Features

The 190501-01-99-CN comes with an integral 32-foot cable, eliminating the need for a separate connector. This design reduces potential connection points and simplifies installation. For longer runs, you can extend up to 305 metres (1,000 ft.) of total cable length (using part number 02173006) without any signal degradation.

The cable is permanently attached to the transducer, providing a robust and weatherproof connection. Therefore, this configuration suits outdoor installations and environments where moisture or contaminants might affect connector reliability.

Installation and Mounting Guidelines

Proper installation ensures optimal performance. To begin, the mounting surface requires a 33 mm diameter flat area. Next, the total height is 82 mm, and the weight is under 297 g. Then, use the supplied 3/8-24 stud for attachment to the mounting surface. Finally, apply a mounting torque of 4.5 N-m ± 0.6 N-m (40 in-lbf ± 5 in-lbf) .

The polarity is clearly defined: Pin A goes positive with respect to Pin B when velocity directs from base to top. In addition, you can mount this sensor at any angle without affecting its response. Moreover, the integral cable simplifies routing and eliminates concerns about connector mating.

Agency Approvals and Safety

This specific variant, 190501-01-99-CN, includes country-specific approvals for the Chinese market. Specifically, it meets the intrinsic safety requirements with Ex ia IIC T4 rating for Class I, Division 1, Groups A, B, C, and D. Additionally, it carries CSA/NRTL/C certification for hazardous locations.

Furthermore, it supports non-incendive operation with Ex nL IIC T4 for Class I, Division 2 areas. Meanwhile, the temperature class is T4, rated for ambient temperatures from -40°C to +100°C. However, always install per drawing 167536 to maintain safety compliance.

Performance and Signal Integrity

The Bently Nevada 190501 delivers consistent data even under challenging conditions. For example, its transverse response is less than 5% of the axial sensitivity, minimizing cross-axis errors. Besides that, base strain sensitivity is rated at 0.43 mm/s/μstrain, ensuring measurements reflect true machine vibration.

The broadband noise floor is only 0.229 mm/s peak, which does not interfere with critical vibration data. Furthermore, temperature sensitivity varies only -8% to +5% typical across the full operating range. Therefore, this stability makes the 190501-01-99-CN a trusted choice for continuous monitoring.

Packaging and Shipping Information

Each unit is carefully packaged to prevent damage during transit. Specifically, the package includes one Bently Nevada 190501-01-99-CN velocity transducer with the 3/8-24 stud pre-installed and the 32-foot cable attached. Additionally, it contains the necessary mounting hardware and a quick-start guide.

We ship all orders via FedEx, UPS, or DHL to ensure fast and secure delivery. Meanwhile, the gross weight for shipping is 0.297 kg per unit. However, please note that certificates and warranty documents are not included in the standard packaging.

Frequently Asked Questions (FAQ)

1. What is the primary application for the Bently Nevada 190501-01-99-CN?
This transducer is mainly used for measuring absolute vibration velocity on compressors, turbines, pumps, and fans in critical industrial processes.

2. What is the difference between this model and the 190501-07-00-01?
The 190501-01-99-CN includes an integral 32-foot cable, eliminating the need for a separate connector and simplifying installation.

3. Can I use this sensor in a hazardous area?
Yes, the 190501-01-99-CN carries Ex ia IIC T4 certification for Class I, Division 1, and Zone 0/1 environments with proper installation per drawing 167536.

4. Can I extend the cable beyond the integral 32 feet?
Yes, you can extend up to 305 metres (1,000 feet) total cable length using Bently Nevada part number 02173006 without signal degradation.

5. How do I properly ground this velocity transducer?
The internal electronics are isolated from the case. You should reference Pin B to your instrumentation ground, following your system's grounding scheme.