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Product Introduction
The Bently Nevada 190501-01-99-01 Velomitor CT Velocity Transducer is a precision-engineered vibration sensing device designed for industrial applications that demand accurate measurement of casing vibration. As part of the Velomitor CT series, this transducer converts mechanical vibration into a proportional electrical voltage signal, providing a direct measurement of absolute casing velocity. It is widely used in condition monitoring and protection systems for rotating machinery such as compressors, turbines, pumps, and motors.
The 190501-01-99-01 is built around a piezoelectric sensing element coupled with internal electronics that deliver a stable, linear output across a wide frequency range. Its robust stainless-steel enclosure ensures long-term durability, even in environments exposed to oil, dust, or high temperatures. With a sensor diameter of 33 mm and a weight of 0.297 kg, this compact transducer can be installed easily on machine casings, bearing housings, or other critical points where vibration monitoring is required.
Bently Nevada’s reputation for reliability and precision is embodied in this model, making it a trusted choice in predictive maintenance systems where continuous vibration measurement helps prevent unplanned shutdowns and optimize equipment performance.
Technical Specifications
| Parameter | Description |
|---|---|
| Product Name | Bently Nevada 190501-01-99-01 Velomitor CT Velocity Transducer |
| Transducer Type | Piezoelectric velocity transducer |
| Measurement Type | Absolute casing vibration |
| Sensitivity | 100 mV/in/s ±10% |
| Frequency Response | 4.5 Hz to 5,000 Hz (±3 dB) |
| Output Signal | Voltage proportional to vibration velocity |
| Power Requirement | 18–28 VDC, 2–10 mA (constant current) |
| Output Bias Voltage | +10 to +14 VDC |
| Transverse Sensitivity | <5% of axial response |
| Resonant Frequency | >15 kHz |
| Shock Limit | 5,000 g peak |
| Operating Temperature | -55°C to +120°C |
| Temperature Coefficient | ±5% sensitivity change over range |
| Mounting Method | Stud or magnet base |
| Connector Type | 2-pin MIL-style connector |
| Housing Material | Stainless steel |
| Sealing | Hermetically sealed for harsh environments |
| Cable Type | Compatible with Bently Nevada coaxial cables |
| Sensor Diameter | 33 mm |
| Weight | 0.297 kg |
| Environmental Rating | IP65 or better depending on installation |
| Compliance | CE, RoHS, and ISO 9001 manufacturing standards |
Product Applications
The 190501-01-99-01 Velomitor CT Velocity Transducer is primarily used in machinery condition monitoring and vibration analysis systems. It measures the absolute velocity of machine casings, providing early warning of mechanical issues such as imbalance, misalignment, looseness, or bearing degradation.
Typical application areas include:
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Centrifugal Pumps: Detecting imbalance, cavitation, and impeller wear through casing vibration monitoring.
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Compressors: Monitoring vibration levels for early detection of mechanical looseness or rotor imbalance.
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Steam and Gas Turbines: Measuring casing vibration to prevent catastrophic mechanical failures.
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Electric Motors and Generators: Identifying misalignment, unbalance, or bearing defects before they escalate.
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Gearboxes and Fans: Ensuring mechanical integrity by analyzing vibration velocity over time.
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Industrial Blowers: Monitoring overall vibration performance to ensure system efficiency and safety.
The transducer integrates seamlessly with Bently Nevada 3500 Series Monitoring Systems and other compatible vibration monitoring instruments. It forms a crucial part of predictive maintenance strategies, reducing unplanned downtime and increasing overall equipment effectiveness (OEE).
Product Advantages
The Bently Nevada 190501-01-99-01 offers a combination of rugged durability, high sensitivity, and stable output, making it ideal for harsh industrial environments. Its advanced piezoelectric sensing technology ensures excellent accuracy, linearity, and signal fidelity across a broad frequency range.
Key advantages include:
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High Accuracy and Linearity: Provides consistent vibration measurements across the entire frequency range.
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Rugged Construction: Stainless-steel housing resists corrosion, oil, and contaminants.
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Hermetically Sealed Design: Protects internal components from moisture and dust intrusion.
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Wide Frequency Response: Captures both low- and high-frequency vibration signatures for detailed analysis.
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Low Transverse Sensitivity: Ensures that measurements are focused on the primary vibration direction.
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Compact and Lightweight: The 33 mm diameter and 0.297 kg weight make installation simple in confined spaces.
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Temperature Stability: Maintains sensitivity and calibration accuracy even at extreme operating temperatures.
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Shock Resistance: Withstands up to 5,000 g peak shock, suitable for high dynamic environments.
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Ease of Integration: Designed to work seamlessly with Bently Nevada monitoring systems such as the 3500 series.
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Long-Term Reliability: Built for continuous industrial use, minimizing the need for recalibration.
FAQ
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What type of signal output does the 190501-01-99-01 provide?
The transducer provides an analog voltage signal directly proportional to the vibration velocity of the machine casing, suitable for direct input to monitoring systems. -
Is this transducer compatible with standard Bently Nevada systems?
Yes, it integrates seamlessly with Bently Nevada 3500 and ADRE monitoring systems, as well as other vibration analysis instruments that support IEPE input. -
What is the main sensing principle used in this device?
It operates using a piezoelectric element that converts mechanical vibration energy into an electrical signal for accurate velocity measurement. -
Can the transducer measure low-frequency vibration effectively?
Yes, with a frequency response starting at 4.5 Hz, it accurately detects low-frequency vibrations common in large rotating machinery. -
How does temperature variation affect performance?
The sensor’s built-in temperature compensation minimizes sensitivity drift, ensuring consistent readings across the entire temperature range. -
What type of mounting is recommended for accurate readings?
Rigid stud mounting is preferred for the highest accuracy, but a magnetic base can be used for temporary or portable measurements. -
How does the transducer handle high shock or transient vibration events?
It is designed to withstand up to 5,000 g peak shock, maintaining accuracy and preventing sensor damage in high dynamic applications. -
Can this model be used in hazardous or explosive environments?
With appropriate system certification, it can be integrated into intrinsically safe installations, depending on the overall monitoring system setup. -
What power source is required for this transducer?
It requires a constant current power source of 2–10 mA within a voltage supply range of 18–28 VDC, typically provided by the monitoring system. -
What differentiates the Velomitor CT from older velocity sensors?
The Velomitor CT uses modern solid-state piezoelectric technology instead of moving-coil mechanisms, offering superior accuracy, stability, and resistance to mechanical wear.
Recommended Related Models (Same Series or Compatible)
| Model | Description |
|---|---|
| 190501-00-00 | Standard Velomitor CT for general-purpose vibration monitoring |
| 190501-02-00 | Side-exit connector version for limited-space installations |
| 190501-07-00 | High-temperature variant suitable for turbine applications |
| 190501-12-00 | Low-sensitivity version for low-amplitude vibration detection |
| 190501-19-00-04 | Enhanced performance version with improved linearity |
| 190501-22-00 | EMI-shielded model designed for electrically noisy environments |
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