190501-04-00-CN | Bently Nevada Velocity Transducer

Introduction to the Bently Nevada 190501-04-00-CN

When machinery vibration threatens uptime, the 190501-04-00-CN from Bently Nevada provides a dependable measurement solution. This Velomitor CT velocity transducer is engineered for industrial rotating equipment, offering accurate velocity readings that help maintenance teams detect faults early. As a trusted name in condition monitoring, Bently Nevada designed this model for demanding environments where precision matters.

The 190501-04-00-CN features a sensitivity of 3.94 mV/mm/s (100 mV/in/s) with ±5% tolerance, ensuring consistent output across applications. Its frequency response spans 3.0 Hz to 900 Hz (180 to 54,000 cpm) within ±1.0 dB, making it suitable for a wide range of machinery speeds. Whether monitoring pumps, motors, or turbines, this transducer delivers the data needed to prevent unplanned downtime.

Key Features and Technical Specifications

Built for reliability, the 190501-04-00-CN incorporates several design elements that enhance its performance in industrial settings. Below are the core specifications that define this velocity transducer:

• 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)
• Grounding: Internal electronics isolated from case
• Maximum Cable Length: 305 metres (1,000 ft) with part number 02173006

These specifications highlight the transducer's ability to deliver accurate, stable readings even in challenging conditions. The low transverse response ensures that measurements reflect true axial vibration, reducing false alarms and improving diagnostic accuracy.

Applications and Use Cases

The 190501-04-00-CN is well-suited for vibration monitoring on rotating machinery such as compressors, fans, and gearboxes. Its wide frequency response captures both low-speed and high-speed vibrations, making it versatile across different equipment types. For example, in a paper mill, this transducer can monitor dryer rolls to detect bearing wear before it leads to costly failures.

Moreover, the transducer's robust construction—316L stainless steel case and connector—allows it to withstand harsh industrial environments, including those with high humidity or magnetic fields. The magnetic field susceptibility of <0.0068 mm/s/gauss (0.268 mil/s/gauss) at 50 gauss ensures reliable operation near motors and generators. Consequently, maintenance teams can trust the data to guide their predictive maintenance programs.

Installation and Mounting

Proper installation is crucial for accurate vibration measurement. The 190501-04-00-CN comes with a stud M6x1 mounting option and a 3/8-in 24 adapter, providing flexibility for different mounting configurations. The connection interface uses MIL-C-5015, a standard for industrial connectors, ensuring secure and reliable electrical connections.

When mounting, it is important to achieve the recommended mounting torque of 4.5 N-m ± 0.6 N-m (40 in-lbf ± 5 in-lbf) to ensure the transducer is firmly attached. The transducer can be mounted in any orientation, which simplifies installation in tight spaces. Additionally, the internal electronics are isolated from the case, reducing the risk of ground loops that could corrupt signals.

For optimal performance, users should follow the manufacturer's guidelines for cable routing and connector mating. The maximum cable length of 305 metres allows for flexible placement of monitoring equipment without signal degradation, provided the specified cable is used.

Maintenance and Reliability

Regular inspection of the 190501-04-00-CN helps maintain its accuracy and longevity. Since the transducer has no moving parts, it requires minimal maintenance compared to older velocity sensors. However, periodic checks of the mounting integrity and connector condition are recommended to prevent loosening or corrosion.

The transducer operates over a wide temperature range, from -40°C to +85°C (-40°F to +185°F), and can withstand shock up to 5000 g pk. This ruggedness reduces the likelihood of damage from mechanical shocks, contributing to long service life. By investing in this reliable transducer, facilities can reduce downtime and maintenance costs, offering a strong return on investment.

Comparison with Similar Transducers

When compared to other velocity transducers in its class, the 190501-04-00-CN stands out due to its high sensitivity and broad frequency response. Many competing models offer lower sensitivity or narrower bandwidth, which can limit their effectiveness in detecting subtle vibration changes. Additionally, the built-in isolation from the case and the availability of intrinsically safe options (Ex ia IIC T4) make it suitable for hazardous areas, a feature not always present in similar products.

Furthermore, the transducer's low base strain sensitivity (0.43 mm/s/μstrain) minimizes errors caused by mounting surface strain, ensuring more accurate readings. This is particularly important in applications where the mounting surface may flex under load. Overall, the 190501-04-00-CN offers a compelling combination of performance and durability for industrial vibration monitoring.

Common Questions About the 190501-04-00-CN

Q: What is the sensitivity of the 190501-04-00-CN?

A: The sensitivity is 3.94 mV/mm/s (100 mV/in/s) with a tolerance of ±5%.

Q: Can the 190501-04-00-CN be used in hazardous areas?

A: Yes, it has agency approval options for intrinsically safe use (Ex ia IIC T4) and non-incendive use (Ex nL IIC T4), per the datasheet.

Q: What is the maximum cable length for this transducer?

A: The maximum cable length is 305 metres (1,000 ft) when using cable part number 02173006, with no signal degradation.

Q: What is the operating temperature range?

A: The operating temperature range is -40°C to +85°C (-40°F to +185°F).

Q: How should the transducer be mounted?

A: It can be mounted in any orientation. Use the stud M6x1 with 3/8-in 24 adapter and tighten to 4.5 N-m ± 0.6 N-m (40 in-lbf ± 5 in-lbf).

Availability and Support

The 190501-04-00-CN is available through Petro Auto Tech, an industrial automation parts supplier. For pricing and lead times, contact Petro Auto Tech directly. As a trusted supplier, Petro Auto Tech ensures genuine parts and reliable service to keep your operations running smoothly.