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

Introduction to the 190501-01-99-CN Velomitor CT

As industrial machinery grows more complex, the demand for accurate vibration monitoring has never been greater. The 190501-01-99-CN from Bently Nevada meets this need with a robust, high-performance velocity transducer designed for continuous operation in demanding environments. This sensor converts mechanical vibration into an electrical signal, enabling predictive maintenance and reducing unplanned downtime.

Part of the trusted Velomitor CT series, the 190501-01-99-CN is engineered for reliability and precision. Its compact, stainless steel construction ensures durability, while its frequency response covers a wide range of rotating machinery speeds. Whether you are monitoring pumps, motors, or turbines, this transducer provides the data you need to keep operations running smoothly.

Key Features and Technical Specifications

The 190501-01-99-CN offers a comprehensive set of specifications that make it a versatile choice for industrial vibration monitoring. Below are the core parameters that define its performance:

• Sensitivity: 3.94 mV/mm/s (100 mV/in/s) ±5%
• Frequency Response: 3.0 Hz to 900 Hz (180 to 54,000 cpm) ±1.0 dB; 1.5 Hz to 1.0 kHz (90 to 60,000 cpm) ±3.0 dB
• Temperature Sensitivity: -8% to +5% typical over operating range
• Transverse Response: Less than 5% of axial sensitivity
• Amplitude Linearity: ±2% to 63.5 mm/s pk (2.5 in/s pk)
• Mounted Resonant Frequency: 9 kHz minimum (stud mounted)
• Output Bias Voltage: 10.1 Vdc ± 1.0 Vdc, Pin A referenced to Pin B
• Dynamic Output Impedance: <400 Ω typical
• Broadband Noise: 0.229 mm/s (0.009 in/s) pk
• Base Strain Sensitivity: 0.43 mm/s/μstrain (0.017 in/s/μstrain)
• Maximum Cable Length: 305 meters (1,000 ft) with part number 02173006

These specifications highlight the transducer's ability to deliver accurate and consistent readings across a wide range of operating conditions. The low output impedance ensures signal integrity over long cable runs, while the high resonant frequency minimizes measurement errors.

Applications and Use Cases

The 190501-01-99-CN is ideal for vibration monitoring in rotating machinery, including motors, pumps, fans, and compressors. Its frequency response covers typical machine speeds, making it suitable for both low-speed and high-speed applications. For example, in a petrochemical plant, this transducer can be mounted on a critical pump to detect early signs of bearing wear, allowing maintenance teams to schedule repairs before a catastrophic failure occurs.

Moreover, the transducer's rugged design and wide operating temperature range (-40°C to +85°C) make it suitable for outdoor installations and harsh industrial environments. Its 316L stainless steel case and connector provide excellent corrosion resistance, ensuring long-term reliability even in humid or chemically aggressive atmospheres.

Installation and Mounting

Proper installation is crucial for accurate vibration measurement. The 190501-01-99-CN features a 3/8-inch stud mounting option (option 01) that ensures a rigid connection to the machine surface. The recommended mounting torque is 4.5 N-m ± 0.6 N-m (40 in-lbf ± 5 in-lbf), which should be applied using a calibrated torque wrench to avoid over-tightening.

The transducer can be mounted in any orientation, providing flexibility in tight spaces. The included 32-foot cable (connection option 99) simplifies wiring, and the maximum cable length of 305 meters allows for remote monitoring setups. Ensure that the mounting surface is clean and flat to achieve optimal frequency response and avoid measurement errors.

Maintenance and Reliability

Regular inspection of the transducer and its mounting is essential to maintain reliable performance. Check the mounting stud for tightness periodically, as vibration can loosen connections over time. Also, inspect the cable for any signs of wear or damage, especially in areas where it may rub against machine parts.

The 190501-01-99-CN is designed for long service life, but environmental factors such as extreme temperatures, humidity, and magnetic fields can affect its accuracy. The transducer's magnetic field susceptibility is less than 0.0068 mm/s/gauss at 50 gauss, ensuring minimal interference in typical industrial settings. By following a routine maintenance schedule, you can extend the life of the transducer and avoid costly downtime.

Compatibility and Integration

The 190501-01-99-CN is compatible with Bently Nevada monitoring systems and can be integrated into existing vibration monitoring networks. Its output signal (dynamic voltage) can be connected to data acquisition systems, PLCs, or distributed control systems for real-time analysis. The transducer's internal electronics are isolated from the case, providing excellent grounding flexibility and reducing the risk of ground loops.

For installations requiring intrinsic safety, the 190501-01-99-CN offers agency approval options (01 through 04) that include Ex ia IIC T4 and AEx ia IIC T4 certifications, suitable for hazardous areas. However, the specific model 190501-01-99-CN has a country-specific approval option (CN), so verify the exact certification requirements for your region before ordering.

Common Questions About the 190501-01-99-CN

What is the sensitivity of the 190501-01-99-CN?

The sensitivity is 3.94 mV/mm/s (100 mV/in/s) ±5%, providing a clear signal for vibration analysis.

What is the maximum cable length for this transducer?

The maximum cable length is 305 meters (1,000 feet) when using cable part number 02173006, with no signal degradation.

Can the 190501-01-99-CN be used in hazardous areas?

Yes, with the appropriate agency approval option. The standard model includes country-specific approval (CN), but options 01-04 offer intrinsic safety certifications.

What is the operating temperature range?

The operating temperature range is -40°C to +85°C (-40°F to +185°F), suitable for most industrial environments.

Support and Availability

The 190501-01-99-CN is available from Petro Auto Tech, your trusted source for industrial automation parts. We maintain a ready inventory to ensure fast delivery. For assistance with selection or installation, contact our knowledgeable team. Please verify the current lifecycle status and availability with Petro Auto Tech before ordering.