190501-00-00-04 | Bently Nevada 100 mV/in/s Velocity Transducer

Why Choose the Bently Nevada 190501-00-00-04 for Vibration Monitoring?

When rotating machinery operates under demanding conditions, accurate vibration measurement is essential to prevent unplanned downtime. The 190501-00-00-04 from Bently Nevada is a Velomitor CT velocity transducer engineered to provide precise, repeatable data in harsh industrial environments. With its robust design and intrinsic safety certifications, this transducer is a dependable choice for critical asset protection.

Key Features and Technical Specifications

The 190501-00-00-04 offers a comprehensive set of performance parameters that ensure reliable operation:

• Sensitivity: 3.94 mV/mm/s (100 mV/in/s) ±5% – ensures accurate velocity measurement.
• 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 – covers a wide range of machine speeds.
• Temperature Sensitivity: -8% to +5% typical over the operating temperature range – maintains accuracy across thermal variations.
• Transverse Response: Less than 5% of the axial sensitivity – minimizes cross-axis errors.
• Amplitude Linearity: ±2% to 63.5 mm/s pk (2.5 in/s pk) – ensures linear output over the measurement range.
• Mounted Resonant Frequency: 9 kHz minimum (stud mounted, except quick disconnect) – avoids resonance interference.
• Output Bias Voltage: 10.1 Vdc ± 1.0 Vdc, Pin A referenced to Pin B – provides a stable DC offset.
• Dynamic Output Impedance: <400 Ω typical – allows easy integration with monitoring systems.
• Broadband Noise: 0.229 mm/s (0.009 in/s) pk – low noise for clear signals.
• Base Strain Sensitivity: 0.43 mm/s/μstrain (0.017 in/s/μstrain) – reduces false readings from mounting stress.
• Grounding: Internal electronics isolated from case – prevents ground loops.
• Maximum Cable Length: 305 metres (1,000 ft.) of cable (part number 02173006) with no degradation of signal – flexible installation.

Environmental and Mechanical Durability

Designed for tough conditions, the 190501-00-00-04 operates reliably across a wide temperature range and withstands severe shocks:

• 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 – survives extreme impacts.
• Humidity Limit: 100% condensing, non-submerged – suitable for humid environments.
• Magnetic Field Susceptibility: <0.0068 mm/s/gauss (0.268 mil/s/gauss) @ 50 gauss, 50-60Hz – immune to magnetic interference.
• Weight: <297 g (10.5 oz.), typical – lightweight for easy mounting.
• Mounting Surface: 33 mm diameter (1.3 in diameter).
• Height: 82 mm (3.2 in).
• Case Material: 316L stainless steel – corrosion-resistant.
• Connector: 2-pin 316L stainless steel MIL-C5015, top – secure connection.
• Mounting Torque: 4.5 N-m ± 0.6 N-m (40 in–lbf ± 5 in-lbf) – proper installation ensures accuracy.
• Polarity: Pin A goes positive with respect to Pin B when velocity is from base to top – clear wiring reference.
• Mounting Angle: Any orientation – flexible placement.

Intrinsic Safety and Agency Approvals

The 190501-00-00-04 with Agency Approval Option 04 is certified for use in hazardous areas:

• Intrinsically Safe: Ex ia IIC T4 – Class I, Div 1, Groups A, B, C, D; Class II, Groups E, F, G; Class III.
• Intrinsically Safe and Non-Incendive: Ex nL IIC T4 – Class I, Division 2, Groups A, B, C and D; AEx nA T4 – Class I, Division 2, Groups A, B, C and D.
• Installation: Per drawing 167536, T4 @ -40°C ≤ Ta ≤ +100°C (-40°F ≤ Ta ≤ +212°F).

Installation and Setup

Proper installation is critical for accurate vibration measurement. The 190501-00-00-04 features a no-stud mounting option (Option 00) and a MIL-C-5015 connection interface. Ensure the mounting surface is clean and flat, and apply the specified mounting torque of 4.5 N-m ± 0.6 N-m. The transducer can be mounted in any orientation, offering flexibility in tight spaces. For hazardous area installations, follow the wiring diagram provided in drawing 167536.

Maintenance and Reliability

Regular inspection of the transducer and its cable is recommended to ensure long-term reliability. Check for physical damage, loose connections, and signs of corrosion. The 316L stainless steel case provides excellent resistance to harsh chemicals and moisture, reducing maintenance frequency. With no moving parts, the Velomitor CT design offers extended service life, minimizing total cost of ownership.

Applications and Use Cases

The 190501-00-00-04 is ideal for monitoring vibration on pumps, motors, fans, compressors, and other rotating equipment in industries such as oil and gas, petrochemical, power generation, and water treatment. Its intrinsic safety certifications make it suitable for hazardous environments where flammable gases or dusts may be present. By providing accurate velocity data, it enables predictive maintenance strategies that reduce unplanned downtime and extend machinery life.

Compatibility and Integration

This transducer is designed to work with Bently Nevada monitoring systems and can be integrated into most vibration monitoring platforms that accept standard velocity transducer inputs. The output bias voltage and impedance characteristics ensure compatibility with common data acquisition systems. For specific integration requirements, consult the official Bently Nevada documentation or contact Petro Auto Tech for technical support.

Frequently Asked Questions

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

A: The sensitivity is 3.94 mV/mm/s (100 mV/in/s) ±5%, providing a clear signal for accurate vibration analysis.

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

A: Yes, with Agency Approval Option 04, it is certified intrinsically safe for Class I, Div 1 and Zone 0/1 environments.

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

A: The maximum cable length is 305 metres (1,000 ft.) using part number 02173006, with no 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), suitable for extreme conditions.

Product Support and Availability

The 190501-00-00-04 is available from Petro Auto Tech, a trusted supplier of industrial automation parts. Contact our team to verify current lifecycle status and availability before ordering. We are ready to assist with your vibration monitoring needs.