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74712-06-02-03-00

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The Bently Nevada 74712-06-02-03-00 is a high-temperature, self-generating Seismoprobe velocity transducer for absolute casing vibration monitoring in rotating machinery.
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Technical specifications for 74712-06-02-03-00

  • Manufacturer:
    Bently Nevada
  • Part Number:
    74712-06-02-03-00
  • Product Family:
    9200 and 74712 Seismoprobe Velocity Transducers
  • Product Type:
    High-temperature Two-wire Transducer
  • Transducer Mounting Angle/Minimum:
    0 ±100
  • Operating Frequency:
    10 Hz (600 cpm)
  • Mounting Base Option:
    Circular, 1/4‑28 UNF stud
  • Connector Option:
    Top‑mounted terminal block
  • Storage Temperature:
    –29°C to +204°C (–20°F to +400°F)
  • Operating Temperature:
    –29°C to +204°C (–20°F to +400°F)
  • Transverse Sensitivity:
    ±10% maximum of sensitive axis sensitivity
  • Weight:
    0.5 kg
  • Estimated shipping dimensions:
    10x7.4x5.8cm
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Monitoring & Control Safety & Compliance Applications

Features:

  • High‑temperature operation
  • Self-generating moving‑coil design
  • Precision low‑frequency response
The Bently Nevada 74712-06-02-03-00 is rated for continuous operation from –29°C to +204°C.This high‑temperature capability ensures reliable casing vibration monitoring in the hottest sections of power plants and refineries without requiring external cooling or heat shielding.

Passive operation simplifies wiring, reduces installation cost, and eliminates ignition risks, making it ideal for both permanent monitoring and portable test setups.

This low‑frequency capability (10 Hz minimum) allows early detection of unbalance, misalignment, and bearing faults in slow‑speed rotating equipment such as large fans, gearboxes, and cooling tower drives.

The 74712-06-02-03-00 Bently Nevada High-temperature Two-wire Transducer may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Bently Nevada 74712-06-02-03-00 High-temperature Two-wire Transducer Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Bently Nevada 74712-06-02-03-00 High-temperature Two-wire Transducer

General

  • Manufacturer GE / Bently Nevada
  • Model 74712-06-02-03-00
  • Condition New Original ready stock
  • Product Family 74712-01-02-03-00,74712-02-02-03-00,74712-02-05-03-00
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Direct connection to 3500 monitoring system: The Bently Nevada 74712-06-02-03-00 connects to 3500/42M and 3500/44M velocity monitor modules via two‑wire shielded cable.
  • Real‑time velocity tracking: Supplies a continuous voltage signal proportional to casing velocity for DCS, PLC, or dedicated vibration displays.
  • Passive output simplifies troubleshooting: Output can be checked with a standard multimeter or oscilloscope without applying external excitation.
  • Trend analysis for predictive maintenance: Long‑term data collection supports System 1™ and other predictive maintenance software for early fault detection.
  • No external power required: The self‑generating design eliminates electrical excitation, reducing ignition risk in potentially hazardous environments (certification depends on option selected).
  • Robust environmental sealing: Anodized aluminum case and silicone gasket (for 74712) provide dust and moisture resistance for industrial installations.
  • Mechanical integrity monitoring: Early detection of unbalance, misalignment, and looseness helps prevent catastrophic machine failures.
  • ISO‑traceable manufacturing: Factory calibration and compliance with Bently Nevada quality standards ensure measurement accuracy and reliability.
  • Steam turbine casing monitoring: The Bently Nevada 74712-06-02-03-00 measures absolute casing vibration in high‑temperature zones up to +204°C.
  • Industrial gas and air compressors: Detects structural resonances, mechanical looseness, and bearing degradation on large compressor frames.
  • Hot refinery pumps: Ideal for monitoring pumps handling high‑temperature fluids where standard sensors fail due to heat.
  • Balance‑of‑plant power equipment: Provides general‑purpose velocity measurements on fans, gearboxes, and cooling tower drives operating above 600 cpm.
Description
The Bently Nevada 74712-06-02-03-00 belongs to the 74712 series, which is the high-temperature evolution of the classic 9200 Seismoprobe. It utilizes moving-coil technology to generate a voltage output directly proportional to vibration velocity, requiring no external power supply. This self-generating characteristic simplifies field wiring and improves reliability in continuous monitoring systems.

The Bently Nevada 74712-06-02-03-00 is configured with mounting angle option -06, which specifies a 0° (±100°) reference orientation and a minimum operating frequency of 10 Hz (600 cpm). The mounting base option -02 provides a circular base with a 1/4-28 UNF threaded stud, while connector option -03 uses a top‑mounted terminal block. Agency approval option -00 indicates no hazardous area certification.

The Bently Nevada 74712-06-02-03-00 offers a sensitivity of 20 mV/mm/s (±5%) and a frequency response from 10 Hz to 1 kHz (+0, –3 dB typical). It is rated for continuous operation from –29°C to +204°C (–20°F to +400°F), making it suitable for steam turbines, hot gas compressors, and high‑temperature pumps. Integral cable options are not available for this high‑temperature version; only terminal block connection is supported.
Alternative Names
74712-01-02-03-00 74712-02-02-03-00 74712-02-05-03-00 74712-02-05-02-00 74712-02-05-02-01 74712-02-02-03-04
Technical notes
The Bently Nevada 74712-06-02-03-00 requires a 0° (±100°) reference orientation (vertical as viewed from the driver end) to maintain specified frequency response and sensitivity. Due to its high‑temperature construction, no integral cable is available for the Bently Nevada 74712-06-02-03-00; only top‑mounted terminal block connection (option C‑03) is permitted, and proper torque of 5.6 N·m
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What is the primary application of the Bently Nevada 74712-06-02-03-00?
The Bently Nevada 74712-06-02-03-00 is used for absolute casing, bearing housing, and structural vibration measurement on rotating machinery operating in high‑temperature environments up to +204°C, including steam turbines, industrial compressors, hot pumps, and power generation equipment.
Can the Bently Nevada 74712-06-02-03-00 replace a standard 9200 sensor in high‑heat areas?
Yes. The Bently Nevada 74712-06-02-03-00 is the high‑temperature version of the 9200 series. It shares the same sensitivity and frequency response but extends the operating temperature from +121°C to +204°C.
Does the Bently Nevada 74712-06-02-03-00 require an external power supply or proximitor?
No. The Bently Nevada 74712-06-02-03-00 is a self‑generating moving‑coil velocity sensor. It outputs a voltage signal directly proportional to vibration velocity without needing external power or a proximitor.
What is the correct mounting orientation for the Bently Nevada 74712-06-02-03-00?
The -06 option specifies a 0° reference angle (±100° tolerance), defined as vertical as viewed from the driver end of the monitored machine. For best accuracy, follow this reference orientation during installation.
How do I verify that the Bently Nevada 74712-06-02-03-00 is functioning correctly?
Because it is a passive sensor, you can perform a simple continuity and resistance check across the terminal block using a multimeter. Abnormal resistance or an open circuit indicates internal damage.

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