Bently Nevada 74712 Seismoprobe Velocity Transducer

Bently Nevada 74712 Seismoprobe Velocity Transducer

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Bently Nevada 74712 Seismoprobe Velocity Transducer is a high-temperature vibration sensor designed to measure absolute vibration at bearing housings, machine casings and structural components. It uses two-wire, moving-coil technology to produce a voltage output directly proportional to vibration velocity.

The Bently Nevada 74712 is the high-temperature version of the Bently Nevada 9200 Seismoprobe Velocity Transducer. According to the manufacturer, the 74712 is qualified for an operating and storage temperature range of -29°C to +204°C (-20°F to +400°F).

The Seismoprobe moving-coil design does not require external power for the transducer’s measurement principle. It can be used for continuous monitoring or periodic measurements with compatible monitoring, testing or diagnostic instruments, depending on the selected configuration and installation.

Features of Bently Nevada 74712 Seismoprobe Velocity Transducer

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• Moving-Coil Technology - Uses a moving-coil design to generate a voltage output directly proportional to vibration velocity.

• Bearing Housing and Casing Vibration Measurement - Measures absolute vibration of bearing housings, machine casings, and structural components.

• Two-Wire Transducer Design - Uses a two-wire configuration for vibration measurement applications.

• Self-Powered Operation - Does not require external power, making it suitable for portable vibration measurements.

• High-Temperature Capability - The 9200 operates from -29°C to +121°C (-20°F to +250°F), while the 74712 operates from -29°C to +204°C (-20°F to +400°F).

• Sensitivity of 20 mV/mm/s - Provides a sensitivity of 20 mV/mm/s (500 mV/in/s), ±5%, when properly terminated and oriented at the calibration angle.

• Frequency Response up to 1 kHz - Supports frequency response ranges starting at 4.5 Hz, 10 Hz, or 15 Hz, depending on the configuration, up to 1 kHz.

• Reduced Sensitivity to Impact Excitation - Moving-coil technology is less sensitive to impact excitation than integrating accelerometers.

• Continuous or Periodic Monitoring - The 9200 supports continuous monitoring or periodic measurements with a test or diagnostic instrument.

• Integral Cable Option - The 9200 can be ordered with an integral cable for improved resistance to corrosive environments without additional protection.

• Mechanical Shock Resistance - Withstands mechanical shocks up to 50 g peak along the non-sensitive transverse axis.

• Dust and Moisture Resistance - Designed to resist dust and moisture; the integral cable configuration supports up to 100% relative humidity when non-submerged.

Technical Specifications of Bently Nevada 74712 Seismoprobe Velocity Transducer

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General

• Manufacturer: Bently Nevada

• Product Type: Seismoprobe Velocity Transducer

• Models: 9200 and 74712

• Technology: Moving-coil

• Transducer Design: Two-wire

• Measurement Type: Absolute vibration velocity

• Measurement Applications: Bearing housing, machine casing and structural vibration

• Power Requirement: No external power required by the transducer

• 9200 Application: Continuous monitoring or periodic measurements with a compatible test or diagnostic instrument

• 74712 Application: High-temperature version of the 9200

Electrical Specifications

• Sensitivity: 20 mV/mm/s (500 mV/in/s), ±5%, when properly terminated and oriented at the calibration angle

• Calibration Load: 10 kΩ

• Output Terminals: Pins A and B

• Sensitivity Temperature Coefficient: 0.2%/°C

• Coil Resistance: 1.25 kΩ ±5%

• Locked-Coil Inductance: 125 mH, typical

• Output Signal: Voltage directly proportional to vibration velocity

• Output Polarity: Pin A becomes positive relative to Pin B when the transducer case velocity is toward the connector

Measurement Specifications

• Frequency Response: 4.5–1,000 Hz, 10–1,000 Hz, or 15–1,000 Hz, depending on the selected configuration; +0/−3 dB typical

• Velocity Range: 25 mm/s (1 in/s) under the specified test conditions

• Dynamic Operating Range: 2.54 mm (0.100 in) peak-to-peak maximum displacement

• Amplitude Linearity: ±5% from 0.254 to 127 mm/s (0.01 to 5.0 in/s) at 100 Hz

• Transverse Sensitivity: ±10% maximum of sensitive-axis sensitivity at 100 Hz and 25.4 mm/s (1.0 in/s)

• Mechanical Shock Resistance: Withstands up to 50 g peak maximum acceleration along the non-sensitive axis

• Maximum Lead-Wire Length: 305 m (1,000 ft) between the transducer and a compatible Bently Nevada 3300 or 3500 monitor; consult the manual for frequency roll-off at longer lengths

Environmental Specifications

• 9200 Operating and Storage Temperature: −29°C to +121°C (−20°F to +250°F)

• 74712 Operating and Storage Temperature: −29°C to +204°C (−20°F to +400°F)

• Environmental Resistance: Dust- and moisture-resistant

• Relative Humidity: Up to 95%, non-condensing

• Integral Cable Humidity Rating: Up to 100%, non-submerged, when ordered with the integral cable option

• Maximum Use Altitude: 2,000 m (6,561 ft) above sea level

Mounting and Connection Options

• Connector Configurations: Top-mounted, side-mounted and terminal-block options, depending on model and configuration

• Mounting Options: Multiple mounting-base configurations are available

• Integral Cable Option: Available for the 9200 in specified configurations

• 74712 Integral Cable: Not available for the high-temperature model

• Interconnect Cables: Available in different lengths, with or without stainless-steel armor

Applications of Bently Nevada 74712 Seismoprobe Velocity Transducer

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The Bently Nevada 74712 Seismoprobe Velocity Transducers are designed to measure absolute vibration velocity on machine casings, bearing housings, and other structural components, including:

• Pumps

• Motors

• Fans and Blowers

• Gearboxes

• Bearing Housings

• Machine Casings

• Industrial Machinery

• Rotating Equipment

• High-Temperature Machinery Applications

The exact application suitability depends on the operating temperature, vibration frequency and amplitude, mounting configuration, and compatibility with the monitoring or diagnostic instrument.

Why Buy Bently Nevada 74712 Seismoprobe Velocity Transducer from ShopAED?

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• FREE delivery anywhere in UAE.

• Best online prices : Best online prices for Bently Nevada 74712 Seismoprobe Velocity Transducer.

• Bulk Discount : ShopAED offers exclusive bulk pricing on Bently Nevada vibration monitoring, velocity sensors,  proximity sensor systems & Inertial Sensors / Accelerometer making it ideal for large-scale industrial operations such as oil & gas plants, power generation facilities, petrochemical industries, and heavy manufacturing units.

• Fast Shipping : We ensure fast and reliable delivery of Bently Nevada products, minimizing downtime for your critical machinery. Our streamlined logistics network guarantees timely dispatch and accurate order fulfillment across the UAE and international markets.

• Lead Time : Standard lead time for Bently Nevada products is 3 to 4 weeks, depending on model and configuration. We coordinate closely with suppliers to ensure transparent timelines and timely delivery for your project requirements..

• Local presence : Locally registered business in Dubai UAE.

ShopAED is Supplier of Bently Nevada 74712 Seismoprobe Velocity Transducer in Dubai (UAE), Saudi Arabia (KSA), Bahrain, Kuwait, Oman & Qatar

For over 15 years, ShopAED has been a trusted supplier of advanced Industrial and Medical Solutions, offering a comprehensive range of Test and Measuring Instruments for accurate diagnostics, calibration, and performance monitoring across industries such as oil & gas, manufacturing, and utilities, along with Automation Control Systems, Sensors, and Engine Parts to support efficient operations and maintenance, in addition, we specialize in AED Defibrillators with a complete range of AED Accessories, Battery, Pads, AED Trainers, and CPR Manikins for emergency preparedness and life-saving training, complemented by essential safety equipment including Respirators, Goggles, Helmets, Earmuffs, Single and Multi Gas Detectors to ensure reliable protection and compliance in demanding work environments.

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