190501-02-00-01 | Bently Nevada 3.94 mV/mm/s Velocity Transducer

Introduction to the Bently Nevada 190501-02-00-01

When rotating machinery begins to vibrate abnormally, the cause may be misalignment, unbalance, or bearing wear. The 190501-02-00-01 from Bently Nevada provides a dependable solution for capturing velocity signals in industrial environments. This Velomitor CT velocity transducer is engineered to convert mechanical vibration into an electrical signal that monitoring systems can interpret.

Part of the trusted Bently Nevada product line, the 190501-02-00-01 offers a sensitivity of 3.94 mV/mm/s (100 mV/in/s) with a tolerance of ±5%. This makes it suitable for a wide range of condition monitoring applications where precise vibration data is essential.

Key Features and Technical Specifications

The 190501-02-00-01 is designed with several notable specifications that support accurate and consistent 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 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 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 are isolated from case.
• Maximum cable length: 305 metres (1,000 ft.) of cable (part number 02173006) with no degradation of signal.

These specifications indicate that the transducer can handle demanding vibration monitoring tasks while maintaining signal integrity over long cable runs.

Environmental and Mechanical Durability

The 190501-02-00-01 is built to withstand harsh industrial conditions. Its operating temperature range is -40°C to +85°C (-40°F to +185°F), and it can be stored at -40°C to +100°C (-40°F to +212°F). The shock limit is 5000 g pk, maximum, and it can operate in 100% condensing humidity (non-submerged). Magnetic field susceptibility is <0.0068 mm/s/gauss (0.268 mil/s/gauss) at 50 gauss, 50-60 Hz.

Mechanically, the transducer weighs less than 297 g (10.5 oz.) and has a mounting surface of 33 mm diameter (1.3 in diameter) with a height of 82 mm (3.2 in). The case is made of 316L stainless steel, and the connector is a 2-pin 316L stainless steel MIL-C-5015, top-mounted. The mounting torque is 4.5 N-m ± 0.6 N-m (40 in-lbf ± 5 in-lbf). The polarity is such that Pin A goes positive with respect to Pin B when velocity is from base to top of the transducer. The transducer can be mounted in any orientation.

Applications and Use Cases

The 190501-02-00-01 is commonly used in industries such as power generation, oil and gas, and manufacturing, where rotating equipment like turbines, compressors, and pumps require continuous vibration monitoring. Its robust design and intrinsic safety approvals make it suitable for hazardous areas. For example, in a petrochemical plant, the transducer can be installed on a motor-driven pump to detect early signs of bearing failure, allowing maintenance teams to schedule repairs before a costly breakdown occurs.

Furthermore, the transducer's wide frequency response and high shock limit enable it to perform reliably in high-vibration environments, such as those found in steel mills or paper mills.

Installation and Setup

Proper installation is key to obtaining accurate vibration data. The 190501-02-00-01 features a stud mounting option (3/8-in 24 to 1/2-in 20) and a MIL-C-5015 connection interface. When mounting, ensure the mounting surface is clean and flat. Apply the recommended mounting torque of 4.5 N-m ± 0.6 N-m (40 in-lbf ± 5 in-lbf) to secure the transducer. The transducer can be oriented in any direction, so it can be positioned to best suit the measurement axis.

For electrical connections, use the specified cable (part number 02173006) up to 305 metres (1,000 ft.) without signal degradation. Verify that the output bias voltage is within the specified range (10.1 Vdc ± 1.0 Vdc) after installation.

Maintenance and Reliability

To ensure long-term reliability, inspect the transducer periodically for any physical damage or loose mounting. Check the cable and connector for wear or corrosion, especially in harsh environments. The 316L stainless steel case provides excellent corrosion resistance, but regular inspection is still recommended.

Because the transducer is intrinsically safe (Ex ia IIC T4, AEx ia IIC T4), it is designed to operate safely in hazardous areas. However, always follow the manufacturer's safety manual and installation drawing (167536) for maintenance procedures.

Troubleshooting Common Issues

If the vibration signal appears noisy or unstable, first verify that the mounting torque is correct and that the transducer is securely attached. Check the cable for damage or loose connections. Also, confirm that the output bias voltage is within the specified range. If issues persist, consult the Bently Nevada documentation or contact Petro Auto Tech for assistance.

FAQ about the 190501-02-00-01

Q: What is the sensitivity of the 190501-02-00-01?

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

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

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

Q: What are the agency approvals for the 190501-02-00-01?

A: It has CSA/NRTL/C (Class I, Division 1) and ATEX/IECEx/CSA (Class I, Zone 0/1) approvals, with intrinsic safety ratings Ex ia IIC T4 and AEx ia IIC T4.

Q: What is the operating temperature range?

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

Q: What is the mounting torque specification?

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

Product Support and Availability

The Bently Nevada 190501-02-00-01 is available through Petro Auto Tech. For current lifecycle status and availability, please contact Petro Auto Tech before ordering. Our team can provide technical support and assist with your vibration monitoring needs.