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

Introduction to the 190501-04-00-04 Velomitor CT

When machine vibration threatens uptime, the 190501-04-00-04 from Bently Nevada provides precise velocity measurements. This Velomitor CT velocity transducer is engineered for industrial rotating equipment. It delivers accurate data for predictive maintenance and protection systems.

With a sensitivity of 3.94 mV/mm/s (±5%), it captures even subtle changes in machinery health. The transducer is part of the trusted Bently Nevada family, known for reliability in harsh environments.

Key Features and Technical Specifications

The 190501-04-00-04 offers a robust set of features tailored for demanding applications. Its frequency response spans 3.0 Hz to 900 Hz (±1.0 dB) and extends to 1.5 Hz to 1.0 kHz (±3.0 dB). This range covers most rotating machinery vibration frequencies.

• 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
• Extended Response: 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
• Maximum Cable Length: 305 metres (1,000 ft.) with part number 02173006

These specs ensure consistent performance in real-world conditions. The transducer's internal electronics are isolated from the case, reducing interference. Its transverse response is less than 5% of axial sensitivity, minimizing cross-axis errors.

Applications and Use Cases

The 190501-04-00-04 is ideal for monitoring pumps, motors, fans, and compressors. It helps detect unbalance, misalignment, and bearing wear early. This enables condition-based maintenance, reducing unplanned downtime.

For example, in a petrochemical plant, the transducer can be installed on critical rotating equipment. It provides continuous velocity data to the protection system. This allows operators to schedule repairs before failures occur, saving costs.

Installation and Mounting

Proper installation is crucial for accurate readings. The 190501-04-00-04 comes with a stud M6x1 mounting option and a 3/8-in 24 adapter. The connection interface is MIL-C-5015, ensuring a secure fit.

Mounting torque should be 4.5 N-m ± 0.6 N-m (40 in-lbf ± 5 in-lbf). The transducer can be mounted in any orientation, offering flexibility. Its case is 316L stainless steel, providing corrosion resistance.

Maintenance and Reliability

Routine inspection is straightforward. Check the mounting integrity and cable condition periodically. The transducer's operating temperature range is -40°C to +85°C, suitable for most industrial settings.

Its shock limit is 5000 g pk, ensuring durability under impact. Humidity limit is 100% condensing (non-submerged), making it resistant to moisture. These features contribute to long service life and reduced maintenance costs.

Compatibility and Integration

The 190501-04-00-04 integrates with Bently Nevada monitoring systems. Its output bias voltage and impedance are designed for seamless connection. The maximum cable length of 305 metres allows flexible placement.

For hazardous areas, the transducer carries agency approvals: CSA/NRTL/C (Class I, Division 1) and ATEX/IECEx/CSA (Class I, Zone 0/1). It is intrinsically safe Ex ia IIC T4 and non-incendive Ex nL IIC T4. Installation must follow drawing 167536.

Comparison with Similar Transducers

Compared to standard velocity transducers, the 190501-04-00-04 offers a wider frequency response and higher sensitivity. Its base strain sensitivity is lower, reducing false readings from case strain. The magnetic field susceptibility is under 0.0068 mm/s/gauss, ensuring accuracy in electromagnetic environments.

Many competitors lack the combined ATEX and IECEx certifications. This transducer provides a versatile solution for global installations.

FAQ

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%.

Q: What is the operating temperature range?

A: It operates from -40°C to +85°C (-40°F to +185°F).

Q: What is the maximum cable length?

A: Up to 305 metres (1,000 ft.) with cable part number 02173006.

Q: Is the transducer intrinsically safe?

A: Yes, it has Ex ia IIC T4 and AEx ia IIC T4 approvals.

Q: What mounting options are available?

A: It includes a stud M6x1 with a 3/8-in 24 adapter.

Product Support and Availability

The 190501-04-00-04 is available through Petro Auto Tech. We ensure genuine parts and reliable delivery. Contact us for current stock and lifecycle status.