Bently Nevada 330752-25 High Temperature Velomitor System

General Info

• Manufacturer: Bently Nevada

• Model Number: 330752-25

• Type: High Temperature Velomitor System

• Number of Channels: Not Applicable

• Output Signal Type: Velocity

• Compatibility: Designed for high-temperature environments; compatible with various machinery condition monitoring systems

• Material: 300 series stainless steel

• Certifications: ATEX, IECEx, CSA

Description

The Bently Nevada 330752-25 features a hermetically sealed casing constructed from 300 series stainless steel, offering exceptional durability and resistance to extreme conditions. This High Temperature Velomitor System is a specialized velocity sensor, engineered for precise vibration monitoring in harsh, high-temperature environments. The sensor is capable of withstanding temperatures of up to +400°C (+752°F), significantly surpassing the limits of traditional sensors. By integrating the sensing head and signal conditioning electronics with an integral hardline cable, the sensitive components can be mounted in cooler locations, improving reliability and extending system service life.

The innovative design eliminates connectors, which are common points of failure, resulting in a more robust system capable of providing reliable and consistent vibration monitoring. This system is ideal for detecting critical machinery conditions such as unbalance, misalignment, and other mechanical faults.

Product Features

• Integrated Cable Design: Direct connection between the sensor head and signal conditioning electronics allows for installation away from high temperatures, enhancing durability.

• High-Temperature Capability: Provides reliable performance in extreme environments, monitoring temperatures up to +400°C (+752°F).

• Precision Monitoring: Accurate vibration monitoring helps detect common mechanical issues such as unbalance and misalignment, ensuring effective machinery protection.

• Minimized Noise Interference: Hardline cable integration reduces noise and ensures high-quality signal transmission.

• Durable Construction: 300 series stainless steel casing offers enhanced resistance to harsh environmental conditions, protecting sensitive components.

Technical Specifications

Electrical Specifications

• Frequency Response: 15 to 2000 Hz (900 to 120,000 cpm) ± 3.0 dB; 20 to 1000 Hz (1,200 to 60,000 cpm) ± 0.9 dB

• Sensitivity: 5.7 mV/mm/s (145 mV/in/s) ±5%

• Amplitude Linearity: ±2% to 152 mm/s (6 in/s) peak

• Amplitude Range: 635 mm/s (25 in/s) peak below 680 Hz; 2940 m/s² (300 g) peak above 680 Hz

• Mounted Resonant Frequency: Greater than 5 kHz

• Transient Temperature Sensitivity: 0.0762 mm/s/°C (0.003 in/s/°C), typical

• Output Bias Voltage: -12 ±2.0 VDC

• Broadband Noise Floor: 0.127 mm/s (0.005 in/s) rms nominal

• Grounding: Case Isolated

• Maximum Cable Length: 305 meters (1000 feet) with no degradation of signal

Environmental Specifications

• Shock Survivability: 24,535 m/s² (2500 g) peak

• Operating and Storage Temperature Range:

  • Integral Hardline Cable: -55°C to +400°C (-67°F to +752°F)

  • Sensing Head: -55°C to +400°C (-67°F to +752°F)

  • Electronics: -55°C to +121°C (-67°F to +250°F)

• Relative Humidity: Up to 100% non-submerged; case is hermetically sealed

Physical Specifications

• Weight:

  • 6 meters: 953 grams (2.10 lb)

  • 4 meters: 794 grams (1.75 lb)

  • 8 meters: 1,111 grams (2.45 lb)

  • 2 meters: 635 grams (1.40 lb)

• Connector: 2-pin Mil-C-5015 receptacle, hermetically sealed, 304 stainless steel shell

• Mounting: Refer to system dimensional drawings for specific mounting requirements

• Bend Radius: Minimum bend radius of 51 mm (2.0 in)

Compliance and Certifications

• EMC Compliance: EMC Directive 2014/30/EU

• FCC Compliance: Complies with part 15 of the FCC Rules

• Hazardous Area Approvals: ATEX, IECEx, CSA certified for hazardous area installations

• RoHS Compliance: Meets RoHS Directive 2011/65/EU

• Maritime Compliance: ABS 2009 Steel Vessels Rules