190501-01-00-01 | Bently Nevada Velocity Transducer

Introduction to the 190501-01-00-01

When machinery vibration threatens uptime, the 190501-01-00-01 from Bently Nevada provides a dependable measurement solution. This Velomitor CT velocity transducer is engineered for industrial environments where accurate data is critical. It offers a frequency response from 3.0 Hz to 900 Hz within ±1.0 dB, making it suitable for a wide range of rotating equipment.

As part of the Bently Nevada family, this transducer is built with 316L stainless steel for durability. Its compact design, with a height of 82 mm and a mounting surface diameter of 33 mm, allows for easy installation in tight spaces. The unit weighs less than 297 g, ensuring minimal impact on the measured structure.

Key Features and Technical Specifications

The 190501-01-00-01 offers several features that enhance its performance in vibration monitoring applications. Below are the core specifications extracted from the official datasheet:

• 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 the operating temperature range.
• Transverse Response: Less than 5% of the axial sensitivity.
• Amplitude Linearity: ±2% to 63.5 mm/s pk (2.5 in/s pk).
• Mounted Resonant Frequency: 9 kHz minimum (stud mounted, except quick disconnect).
• Output Bias Voltage: 10.1 Vdc ± 1.0 Vdc, Pin A referenced to Pin B.
• Dynamic Output Impedance: <400 Ω typical.
• Broadband: 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 are isolated from case.
• Maximum Cable Length: 305 metres (1,000 ft.) of cable (part number 02173006) with no degradation of signal.

One distinctive spec is the maximum cable length of 305 metres. This allows the transducer to be placed far from the monitoring system without signal loss, offering flexibility in large industrial plants. This feature reduces the need for additional signal conditioning equipment, saving cost and simplifying installation.

Applications and Use Cases

The 190501-01-00-01 is ideal for monitoring vibration on pumps, motors, fans, and other rotating machinery. Its frequency response covers typical machine speeds, making it versatile for predictive maintenance programs. For example, in a chemical plant, this transducer can be installed on a critical pump to detect early signs of bearing wear, preventing unplanned downtime.

Moreover, its rugged construction and environmental ratings—operating temperature from -40°C to +85°C and 100% condensing humidity—make it suitable for harsh outdoor or washdown areas. The transducer's ability to withstand 5000 g pk shock ensures it survives accidental impacts during installation or operation.

Installation and Setup

Proper installation is crucial for accurate vibration measurement. The 190501-01-00-01 comes with a stud mounting option (3/8-in 24 to 3/8-in 24) and a MIL-C-5015 connection interface. The recommended mounting torque is 4.5 N-m ± 0.6 N-m (40 in–lbf ± 5 in-lbf). Ensure the mounting surface is clean and flat to achieve the specified resonant frequency.

The transducer can be mounted in any orientation, providing flexibility in tight spaces. For optimal performance, use the specified cable (part number 02173006) to maintain signal integrity over long distances. Always follow the manufacturer's installation drawing (167536) for hazardous area installations.

Maintenance and Reliability

Routine inspection of the transducer and its cable is recommended to ensure long-term reliability. Check for physical damage, loose connections, and signs of corrosion. The 316L stainless steel case resists corrosion, but periodic cleaning with a mild detergent and water is advisable if the unit is exposed to contaminants.

Given its robust design, the 190501-01-00-01 requires minimal maintenance. The absence of moving parts reduces wear, and the internal electronics are isolated from the case, preventing ground loops. This reliability translates into lower total cost of ownership, as fewer replacements and repairs are needed over the equipment's life.

Compatibility and Integration

The 190501-01-00-01 is designed to work with Bently Nevada monitoring systems, but its standard analog output (velocity signal) allows integration with most vibration monitoring platforms. The output bias voltage of 10.1 Vdc and dynamic impedance of less than 400 Ω are compatible with typical data acquisition systems.

For hazardous area installations, the transducer has agency approvals including CSA/NRTL/C (Class I, Division 1) and ATEX/IECEx/CSA (Class I, Zone 0/1). This makes it suitable for use in explosive atmospheres, provided it is installed per the referenced drawing. Always verify compatibility with your existing system before ordering.

Troubleshooting and Common Issues

If the transducer produces no signal, first check the cable connection and continuity. Ensure the mounting stud is tight and the transducer is properly seated. If the signal is noisy, verify that the cable is not routed near high-voltage lines or variable frequency drives. The internal grounding isolation helps reduce ground loop issues, but proper shielding is still essential.

Another common issue is incorrect polarity. The datasheet specifies that Pin A goes positive with respect to Pin B when velocity is from base to top. Verify the wiring matches this polarity to ensure accurate phase measurements. If problems persist, consult the official Bently Nevada documentation or contact Petro Auto Tech for technical support.

FAQ about the 190501-01-00-01

What is the frequency response of the 190501-01-00-01?

The frequency response is 3.0 Hz to 900 Hz (180 to 54,000 cpm) with ±1.0 dB, and 1.5 Hz to 1.0 kHz (90 to 60,000 cpm) with ±3.0 dB.

What is the maximum cable length for this transducer?

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

Is the 190501-01-00-01 suitable for hazardous areas?

Yes, it has agency approvals for Class I, Division 1 and Zone 0/1, including ATEX and IECEx, when installed per drawing 167536.

What is the operating temperature range?

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

What mounting torque is recommended?

The recommended mounting torque is 4.5 N-m ± 0.6 N-m (40 in–lbf ± 5 in-lbf).

Product Support and Availability

The 190501-01-00-01 is available from Petro Auto Tech, an industrial automation parts supplier. We stock this transducer and can ship it promptly to minimize your downtime. For assistance with selection or installation, contact our team.