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

Introduction to the 190501-01-00-CN

When machinery vibration threatens uptime, the 190501-01-00-CN from Bently Nevada provides reliable velocity sensing. This Velomitor CT velocity transducer is engineered for industrial rotating equipment. It converts mechanical vibration into an electrical signal. That signal helps condition monitoring systems detect early faults.

With a sensitivity of 3.94 mV/mm/s (±5%), the transducer offers consistent output. 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 common machine vibration frequencies. Therefore, it suits pumps, motors, fans, and compressors.

The 190501-01-00-CN is part of the Velomitor CT series. It features a 316L stainless steel case. The unit weighs 0.297 kg. Its compact design simplifies installation in tight spaces.

Key Features and Technical Specifications

Engineers need precise data to make decisions. The 190501-01-00-CN delivers with these verified specs:

• 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.) of cable (part number 02173006) 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.

One standout feature is the mounted resonant frequency of 9 kHz minimum. This high resonance minimizes measurement errors in high-frequency environments. As a result, the transducer maintains accuracy even with strong vibrations.

Applications and Use Cases

The 190501-01-00-CN is ideal for machinery protection and condition monitoring. It excels in applications where early fault detection prevents costly downtime. For example, in petrochemical plants, it monitors pumps and motors. In power generation, it tracks turbine vibrations. The transducer’s rugged design handles harsh industrial conditions.

Its intrinsically safe approvals (Ex ia IIC T4, AEx ia IIC T4) allow use in hazardous areas. The CN agency approval option indicates country-specific certification. Always verify local regulations before installation.

Because the transducer is passive, it requires no external power. This simplifies wiring and reduces installation costs. Moreover, its internal electronics are isolated from the case, preventing ground loops.

Installation and Setup

Proper mounting is critical for accurate readings. The 190501-01-00-CN uses a stud 3/8-in 24 to 3/8-in 24 mounting hardware option. This provides a rigid connection to the machine surface. The recommended mounting torque is 4.5 N-m ± 0.6 N-m (40 in–lbf ± 5 in-lbf).

The transducer can be mounted in any orientation. This flexibility simplifies installation in confined areas. The connection interface is MIL-C-5015, a standard 2-pin connector. Ensure the connector is properly seated to maintain IP protection.

For best results, mount the transducer on a flat, clean surface. Avoid excessive torque, which can distort the case. Follow the manufacturer’s installation drawing (167536) for hazardous area installations.

Maintenance and Reliability

Routine maintenance is minimal. The transducer has no moving parts, so wear is negligible. However, periodic inspection is recommended. Check the mounting stud for tightness. Inspect the cable for damage. Verify the connector is clean and secure.

Environmental factors can affect performance. The unit operates from -40°C to +85°C. It withstands 5000 g pk shock. Its humidity limit is 100% condensing, but it must not be submerged. These robust specs ensure long service life.

By investing in the 190501-01-00-CN, you reduce unplanned downtime. Its reliability lowers maintenance costs. This makes it a cost-effective choice for critical machinery.

Compatibility and Integration

The 190501-01-00-CN is compatible with Bently Nevada monitoring systems. It connects to vibration monitors and data acquisition units. The transducer outputs a standard velocity signal. This signal is accepted by most condition monitoring software.

For new installations, pair it with Bently Nevada cables (e.g., part number 02173006). This ensures signal integrity over long distances. The transducer’s low output impedance (<400 Ω) allows cable runs up to 305 meters.

If you are upgrading an existing system, check compatibility with your current monitor. The 190501-01-00-CN is a direct replacement for many older velocity transducers. Its specifications match industry standards.

Frequently Asked Questions

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

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

Q: Can the transducer be used in hazardous areas?

A: Yes, it has intrinsic safety approvals (Ex ia IIC T4, AEx ia IIC T4) for Class I, Div 1, Groups A, B, C, D, and Class II/III areas.

Q: What is the maximum cable length?

A: Up to 305 meters (1,000 feet) of cable (part number 02173006) can be used without signal degradation.

Q: What is the operating temperature range?

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

Q: Is the transducer grounded to the case?

A: No, the internal electronics are isolated from the case, preventing ground loops.

Product Support and Availability

The 190501-01-00-CN is available from Petro Auto Tech. We stock this transducer and can ship promptly. For technical support, contact our team. We help you select the right vibration monitoring solution.

Please verify current lifecycle status and availability with Petro Auto Tech before ordering. This ensures you receive the latest revision and support.