Bently Nevada 190501-01-00-01 Velomitor CT Sensor

Bently Nevada 190501-01-00-01 Velomitor CT Velocity Transducer

Product Introduction

The Bently Nevada 190501-01-00-01 represents a globally certified variant within the Velomitor CT series, distinguished by its comprehensive hazardous area approvals. This sensor carries CSA/NRTL/C certification for Class I, Division 1 installations, along with ATEX, IECEx, and CSA approvals for Class I, Zone 0 and Zone 1 environments. The 190501-01-00-01 provides accurate absolute casing vibration measurements, which form the foundation for effective machinery protection and predictive maintenance strategies. Furthermore, its 316L stainless steel construction and advanced internal shielding ensure dependable operation across a wide range of industrial applications, from oil and gas to power generation and chemical processing.

Technical Specifications

The 190501-01-00-01 delivers a standard sensitivity of 3.94 mV/mm/s (100 mV/in/s) with a tight tolerance of ±5%. Its frequency response spans from 3.0 Hz to 900 Hz within ±1.0 dB and extends from 1.5 Hz to 1.0 kHz within ±3.0 dB, effectively covering the vibration frequencies of most turbines, compressors, pumps, and fans. In addition, the amplitude linearity remains within ±2% up to 63.5 mm/s peak, ensuring accurate readings across the entire measurement range. The mounted resonant frequency reaches a minimum of 9 kHz when stud mounted, effectively preventing resonance-related inaccuracies in critical speed ranges.

Furthermore, the output bias voltage maintains a steady 10.1 Vdc ± 1.0 Vdc on Pin A relative to Pin B, with a typical dynamic output impedance of less than 400 Ω. The internal electronics feature galvanic isolation from the sensor case, which effectively eliminates troublesome ground loop problems. For instance, this isolation proves particularly valuable in large industrial installations where ground potential differences commonly cause measurement errors. The 190501-01-00-01 also supports cable runs up to 305 meters (1,000 feet) using Bently Nevada cable part number 02173006 without any signal degradation, making it suitable for installations where the monitoring equipment resides far from the measurement point.

The transverse response measures less than 5% of the axial sensitivity, which minimizes cross-axis interference and ensures measurement accuracy. Additionally, the base strain sensitivity is specified at 0.43 mm/s/μstrain, and the broadband noise floor is an impressively low 0.229 mm/s peak. These specifications collectively ensure that the Bently Nevada 190501-01-00-01 delivers clean, reliable data for critical machinery protection systems.

Environmental and Mechanical Limits

Engineered for extreme conditions, the 190501-01-00-01 operates reliably between -40°C and +85°C and can withstand storage temperatures from -40°C to +100°C. It also handles a shock limit of 5000 g peak, ensuring outstanding durability in high-impact machinery applications. The housing and top-mounted MIL-C-5015 connector both feature 316L stainless steel construction, providing excellent corrosion resistance in aggressive environments. The unit weighs less than 297 grams, and we recommend a mounting torque of 4.5 N-m ± 0.6 N-m for secure installation. Moreover, the sensor installs in any orientation, offering maximum flexibility during system design and retrofitting projects.

The magnetic field susceptibility is exceptionally low at less than 0.0068 mm/s/gauss at 50 gauss, 50-60 Hz. This characteristic ensures that nearby motors, generators, or other electromagnetic sources will not adversely affect the measurement accuracy. The humidity limit allows for 100% condensing environments, provided the sensor remains non-submerged, which makes it suitable for outdoor installations and wash-down areas.

Agency Approvals and Safety

The 190501-01-00-01 carries the "01" agency approval option, which represents the most comprehensive certification package available for this sensor series. Specifically, it holds CSA/NRTL/C certification for Class I, Division 1, Groups A, B, C, and D, as well as Class II, Group E, F, and G, and Class III. Additionally, it features ATEX, IECEx, and CSA approvals for Class I, Zone 0 and Zone 1 installations with an Ex ia IIC T4 rating. The non-incendive rating (Ex nL IIC T4) further qualifies it for Class I, Division 2, Groups A, B, C, and D applications. The temperature classification is T4, with an ambient temperature range from -40°C to +100°C. Consequently, these certifications make the Bently Nevada 190501-01-00-01 an ideal choice for installation in potentially explosive atmospheres worldwide, including oil refineries, chemical plants, offshore platforms, and gas processing facilities.

Installation Guidelines

Proper installation of the 190501-01-00-01 ensures optimal performance and measurement accuracy. First, prepare a clean, flat mounting surface with a minimum diameter of 33 mm. Next, inspect the 3/8-24 mounting stud to confirm it is free from damage or debris. Then, apply a suitable anti-seize compound to the threads to facilitate future sensor removal. After that, hand-tighten the transducer into the mounting hole before applying the final torque of 4.5 N-m ± 0.6 N-m with a calibrated torque wrench. Finally, connect the sensor using a compatible MIL-C-5015 connector, ensuring cable length does not exceed the 305-meter maximum limit for optimal signal integrity.

The polarity connection requires attention during installation. Pin A goes positive with respect to Pin B when the velocity direction travels from the base to the top of the transducer. Correct polarity ensures proper phase response in your monitoring system. For installations in hazardous areas, always follow drawing 167536 and observe all relevant local regulations and safety practices.

Packaging List

• 1 x Bently Nevada 190501-01-00-01 Velomitor CT Velocity Transducer

• 1 x 3/8-24 to 3/8-24 Mounting Stud

• 1 x Installation Instruction Sheet

All shipments are made via FedEx, UPS, or DHL with secure packaging to prevent damage during transit.

Frequently Asked Questions (FAQ)

Q1: What makes the 190501-01-00-01 different from other Velomitor CT models?

A1: The 190501-01-00-01 distinguishes itself through its comprehensive hazardous area certifications, including CSA/NRTL/C, ATEX, and IECEx approvals for Class I, Division 1 and Zone 0/1 installations. This makes it suitable for global deployment in explosive atmospheres.

Q2: Can I use this sensor in both Division 1 and Division 2 hazardous areas?

A2: Yes. The 190501-01-00-01 carries both Intrinsically Safe (Ex ia IIC T4) certification for Division 1/Zone 0-1 and Non-Incendive (Ex nL IIC T4) approval for Division 2 applications.

Q3: What is the maximum cable length this transducer supports?

A3: The 190501-01-00-01 supports cable runs up to 305 meters (1,000 feet) when using Bently Nevada cable part number 02173006, with no measurable signal degradation at this distance.

Q4: What mounting hardware does this version include?

A4: This model includes a 3/8-24 to 3/8-24 mounting stud, which provides a direct, secure connection to standard 3/8-24 threaded mounting holes commonly found on industrial machinery.

Q5: Is there any special consideration for installing this sensor in cold environments?

A5: The 190501-01-00-01 operates reliably down to -40°C, making it suitable for outdoor installations in cold climates. However, ensure the cable remains flexible and avoid impacts to the sensor at extremely low temperatures.