190501-04-00-CN | Bently Nevada 3.94 mV/mm/s Velocity Transducer

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

When machine vibration threatens uptime, the 190501-04-00-CN from Bently Nevada provides accurate, real-time velocity measurements. This Velomitor CT velocity transducer is engineered for industrial environments where reliability is non-negotiable. With a sensitivity of 3.94 mV/mm/s (±5%), it captures subtle changes in machinery health. Consequently, maintenance teams can detect issues early and avoid costly downtime.

The 190501-04-00-CN features a stud M6x1 mounting with a 3/8-in 24 adapter, ensuring secure attachment. Its MIL-C-5015 connection interface simplifies wiring. Additionally, the country-specific agency approval option (CN) makes it suitable for diverse global installations. This transducer is a solid choice for continuous vibration monitoring in rotating equipment.

Key Features and Technical Specifications

The 190501-04-00-CN is built to perform under demanding conditions. Below are the core specifications that define its capabilities:

• 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 isolated from case.
• Maximum Cable Length: 305 meters (1,000 ft.) of cable (part number 02173006) with no degradation of signal.

These specs highlight the transducer's precision and stability. For instance, the low base strain sensitivity minimizes false readings from mounting stress. Therefore, you get trustworthy data for predictive maintenance.

Environmental Durability and Safety Approvals

The 190501-04-00-CN operates reliably in harsh conditions. Its environmental limits include:

• Operating Temperature: -40°C to +85°C (-40°F to +185°F).
• Storage Temperature: -40°C to +100°C (-40°F to +212°F).
• Shock Limit: 5000 g pk, maximum.
• Humidity Limit: 100% condensing, non-submerged.
• Magnetic Field Susceptibility: <0.0068 mm/s/gauss (0.268 mil/s/gauss) @ 50 gauss, 50-60 Hz.

Moreover, the transducer carries intrinsic safety approvals. It meets Ex ia IIC T4 and AEx ia IIC T4 standards for Class I, Div 1, Groups A, B, C, D; Class II, Groups E, F, G; and Class III. Additionally, it is approved as Ex nL IIC T4 and AEx nA T4 for Class I, Division 2, Groups A, B, C, and D. These certifications ensure safe operation in explosive atmospheres when installed per drawing 167536.

Buyer's Guide: Evaluating the 190501-04-00-CN

When selecting a velocity transducer, consider these factors:

1. Measurement Accuracy

The 190501-04-00-CN offers ±2% amplitude linearity up to 63.5 mm/s pk. This accuracy is critical for detecting subtle changes in vibration. Therefore, you can rely on consistent data for trend analysis.

2. Installation Flexibility

With a mounting angle of any orientation and a compact design (33 mm diameter, 82 mm height), this transducer fits tight spaces. The stud M6x1 mounting with 3/8-in 24 adapter provides a secure fit. Additionally, the MIL-C-5015 connector ensures a robust electrical connection.

3. Long-Term Reliability

The 316L stainless steel case resists corrosion, making it suitable for harsh environments. Moreover, the internal electronics are isolated from the case, reducing ground loop issues. This design extends the transducer's service life and minimizes maintenance needs.

4. Compliance and Safety

For hazardous areas, the intrinsic safety approvals (Ex ia IIC T4) are essential. Always verify that your installation meets the requirements of drawing 167536. This ensures safe operation and regulatory compliance.

Applications and Use Cases

The 190501-04-00-CN is ideal for monitoring rotating machinery such as pumps, motors, fans, and compressors. Its wide frequency response (1.5 Hz to 1.0 kHz) captures both low-speed and high-speed vibrations. Consequently, it supports condition monitoring programs that prevent unexpected failures. Additionally, the transducer's rugged design makes it suitable for offshore, chemical, and power generation plants.

Installation and Setup

Proper installation is key to accurate measurements. First, mount the transducer on a flat, clean surface using the provided stud. Apply the recommended mounting torque of 4.5 N-m ± 0.6 N-m (40 in-lbf ± 5 in-lbf). Next, connect the MIL-C-5015 connector to the extension cable. Ensure the cable length does not exceed 305 meters to avoid signal degradation. Finally, verify the output bias voltage (10.1 Vdc ± 1.0 Vdc) to confirm correct operation.

Maintenance and Reliability

Routine inspection ensures long-term performance. Periodically check the mounting integrity and cable condition. Also, verify that the transducer's output remains within specifications. Because the internal electronics are sealed, no field calibration is required. However, if the transducer is exposed to extreme shock (over 5000 g), inspect it for damage. Following these practices maximizes reliability and reduces lifecycle costs.

Compatibility and Integration

The 190501-04-00-CN is compatible with Bently Nevada monitoring systems that accept velocity transducer inputs. Its standard MIL-C-5015 connection interface allows easy integration with existing cabling. Moreover, the transducer's low output impedance (<400 Ω) ensures signal integrity over long cable runs. Therefore, it works well with most industrial vibration monitoring systems.

Frequently Asked Questions

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

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

Q: Can the 190501-04-00-CN be used in hazardous areas?

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

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

A: The maximum cable length is 305 meters (1,000 ft.) using part number 02173006 without signal degradation.

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 mounting hardware is included?

A: The mounting hardware option is a stud M6x1 with a 3/8-in 24 adapter.

Product Support and Availability

The 190501-04-00-CN is available through Petro Auto Tech. We stock this transducer and can ship it promptly. For technical assistance or to verify compatibility, contact our team. We are committed to supporting your vibration monitoring needs.