190501-04-00-04 | Bently Nevada Velomitor CT Velocity Transducer

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

When machine vibration threatens uptime, the 190501-04-00-04 from Bently Nevada provides precise, continuous velocity measurement. This Velomitor CT velocity transducer is engineered for industrial environments where accuracy and durability are non-negotiable. With its robust design and proven performance, it helps maintenance teams detect problems early and avoid costly failures.

As a trusted supplier, Petro Auto Tech offers this transducer for applications that demand reliable vibration data. The 190501-04-00-04 is part of the Velomitor CT series, known for its compact form and high sensitivity. Whether you are monitoring pumps, fans, or motors, this sensor delivers the data you need to keep operations running smoothly.

Key Features and Technical Specifications

The 190501-04-00-04 stands out for its exceptional sensitivity and wide frequency response. Here are the core specifications 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
• 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 metres (1,000 ft.) with no signal degradation
• Operating Temperature: -40°C to +85°C (-40°F to +185°F)
• Shock Limit: 5000 g pk, maximum
• Humidity Limit: 100% condensing, non-submerged
• Case Material: 316L stainless steel
• Weight: <297 g (10.5 oz.), typical

One distinctive feature is the low base strain sensitivity of 0.43 mm/s/μstrain. This means the transducer minimizes false readings caused by mechanical stress on the mounting surface. As a result, you get cleaner vibration data, which leads to more accurate diagnostics and fewer unnecessary alarms.

Applications and Use Cases

The 190501-04-00-04 is ideal for rotating machinery monitoring in industries such as oil and gas, power generation, and manufacturing. It measures absolute bearing housing vibration, which is critical for detecting imbalance, misalignment, and bearing wear. Because it is intrinsically safe (Ex ia IIC T4) and CSA/NRTL/C approved for Class I, Division 1, it can be used in hazardous areas where explosive gases may be present.

For example, in a refinery, this transducer can be mounted on a motor-driven pump to monitor vibration levels continuously. Early detection of increased vibration allows maintenance teams to schedule repairs before a catastrophic failure occurs. This proactive approach reduces downtime and extends equipment life.

Installation and Mounting

Proper installation is essential for accurate vibration measurement. The 190501-04-00-04 comes with a stud M6x1 mounting option and a 3/8-in 24 adapter, making it versatile for different mounting configurations. 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 optimal coupling.

The transducer can be mounted in any orientation, which simplifies installation in tight spaces. Its 2-pin MIL-C-5015 connector provides a secure, reliable connection. For hazardous area installations, follow the specific wiring and installation instructions in the manufacturer's manual (drawing 167536) to maintain intrinsic safety.

Maintenance and Reliability

The 190501-04-00-04 is built to withstand harsh conditions. Its 316L stainless steel case resists corrosion, and the internal electronics are isolated from the case, reducing the risk of ground loops. With no moving parts, the sensor requires minimal maintenance. However, periodic inspection is recommended to ensure the mounting remains secure and the cable is not damaged.

Because the transducer is designed for long-term reliability, it helps reduce maintenance costs over its service life. By providing consistent, accurate data, it enables condition-based maintenance, which can significantly lower overall operational expenses.

Compatibility and Integration

The 190501-04-00-04 is compatible with Bently Nevada monitoring systems and other data acquisition equipment that accepts velocity transducer inputs. Its standard output (3.94 mV/mm/s) and bias voltage (10.1 Vdc) make it easy to integrate into existing vibration monitoring setups. The maximum cable length of 305 meters allows flexible placement of monitoring electronics away from the machine.

Frequently Asked Questions

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

A: The sensitivity is 3.94 mV/mm/s (100 mV/in/s) ±5%, providing accurate velocity measurement.

Q: Can this transducer be used in hazardous areas?

A: Yes, it has ATEX/IECEx/CSA (Class I, Zone 0/1) and CSA/NRTL/C (Class I, Division 1) approvals, making it suitable for explosive atmospheres.

Q: What is the maximum cable length?

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

Q: What is the operating temperature range?

A: It operates from -40°C to +85°C (-40°F to +185°F), suitable for most industrial environments.

Q: How should I mount the transducer?

A: Use the M6x1 stud or 3/8-in 24 adapter, and tighten to 4.5 N-m ± 0.6 N-m (40 in-lbf ± 5 in-lbf) on a clean, flat surface.

Product Support and Availability

The 190501-04-00-04 is available from Petro Auto Tech. Contact our team to confirm stock and lead times. We are committed to helping you find the right parts for your automation needs.