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

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

When machinery vibration threatens uptime, the 190501-04-00-CN from Bently Nevada provides the precise measurement you need. This Velomitor CT velocity transducer is engineered for continuous monitoring in demanding industrial environments. With a sensitivity of 3.94 mV/mm/s (100 mV/in/s) ±5%, it converts mechanical velocity into a clear electrical signal. Consequently, maintenance teams can detect developing faults early and schedule repairs proactively.

Built in the U.S.A., this transducer features a 316L stainless steel case and connector, ensuring corrosion resistance in harsh conditions. The mounting hardware option 04 includes a stud M6x1 with a 3/8-in 24 adapter, simplifying installation on existing machinery. The connection option 00 provides a MIL-C-5015 interface, a standard for reliable industrial connections.

Key Features and Performance Metrics

The 190501-04-00-CN delivers consistent performance across a wide range of operating conditions. Its frequency response spans 3.0 Hz to 900 Hz (180 to 54,000 cpm) with a tolerance of ±1.0 dB, and extends from 1.5 Hz to 1.0 kHz (90 to 60,000 cpm) at ±3.0 dB. This broad range captures both low-speed and high-speed machinery vibrations effectively.

• Sensitivity: 3.94 mV/mm/s (100 mV/in/s) ±5%.
• Frequency Response: 3.0 Hz to 900 Hz (±1.0 dB); 1.5 Hz to 1.0 kHz (±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 are isolated from case.
• Maximum Cable Length: 305 metres (1,000 ft.) of cable (part number 02173006) with no degradation of signal.

One distinctive spec is the mounted resonant frequency of 9 kHz minimum. This high resonance ensures that the transducer's own natural frequency does not interfere with the measurement band, providing accurate readings even in high-frequency applications.

Environmental Durability

The 190501-04-00-CN is built to withstand extreme conditions. It operates in temperatures from -40°C to +85°C (-40°F to +185°F) and can be stored from -40°C to +100°C (-40°F to +212°F). Additionally, it survives shock limits of 5000 g pk maximum, making it suitable for heavy-impact machinery. The humidity limit is 100% condensing (non-submerged), and magnetic field susceptibility is less than 0.0068 mm/s/gauss (0.268 mil/s/gauss) at 50 gauss, 50-60 Hz.

Installation and Setup

Installing the 190501-04-00-CN is straightforward. The mounting hardware option 04 provides a stud M6x1 with a 3/8-in 24 adapter, allowing flexible mounting on various machine surfaces. 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, which simplifies placement in tight spaces.

The connection interface is a 2-pin 316L stainless steel MIL-C5015 connector located on top. Polarity is defined: Pin A goes positive with respect to Pin B when velocity is from base to top of the transducer. This clarity prevents wiring errors during installation.

Maintenance and Reliability

Regular inspection is key to long-term reliability. Since the internal electronics are isolated from the case, the transducer is less susceptible to ground loops and electrical interference. However, you should periodically check the mounting integrity and cable condition. The 316L stainless steel construction resists corrosion, reducing the need for frequent replacements.

For maintenance engineers, the 190501-04-00-CN offers peace of mind. Its robust design minimizes downtime, and the predictable performance simplifies troubleshooting. Always follow the manufacturer's manual for specific maintenance procedures.

Common Questions About the 190501-04-00-CN

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: 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.) of cable (part number 02173006) with no signal degradation.

Q: Is the transducer intrinsically safe?

A: Yes, it carries Ex ia IIC T4 and AEx ia IIC T4 approvals (for agency approval options 01 through 04).

Q: What is the mounting torque requirement?

A: The recommended mounting torque is 4.5 N-m ± 0.6 N-m (40 in-lbf ± 5 in-lbf).

Support and Availability

The 190501-04-00-CN is available through Petro Auto Tech. As an industrial automation parts supplier, Petro Auto Tech ensures genuine Bently Nevada products and timely delivery. Contact Petro Auto Tech for current availability and lifecycle status.