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107770-03-03

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The Bently Nevada 107770-03-03 is a CENELEC-approved velocity transducer housing that combines a 330500 Velomitor Sensor with a factory-installed 21128 housing.
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Technical specifications for 107770-03-03

  • Manufacturer:
    Bently Nevada
  • Part Number:
    107770-03-03
  • Product Family:
    330500 Velomitor Piezo-velocity Sensor
  • Product Type:
    Velocity Transducer Housing
  • Stock:
    1
  • Mounting Thread Option:
    03 = 1/2 - 14 NPT
  • Cable Exit Fitting Option:
    03 = 1/2 - 14 NPT explosion-proof with cable gland seal
  • Operating Temperature Range:
    +20 °C to +30 °C (+68 °F to +86 °F)
  • Shock Survivability:
    5,000 g peak, maximum
  • Relative Humidity:
    To 100% non-submerged; case is hermetically-sealed.
  • Weight:
    0.38 kg
  • Estimated shipping dimensions:
    6.7x3.2x3.2cm
  • Tariff Code:
    8537109090
  • 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 Connections Standards Use Cases

Features:

  • Integrated 330500 Velomitor sensor and factory-installed housing approved for CENELEC Zone 1 Group IIC environments
  • Solid-state piezoelectric design without moving parts enables flexible mounting and minimizes mechanical degradation
  • Hermetically sealed construction provides resistance to humidity and high shock conditions up to 5,000 g peak
The Bently Nevada 107770-03-03 is intended for industrial vibration monitoring applications where accurate measurement of casing and bearing housing vibration is essential. By combining the 330500 Velomitor sensor with a pre-assembled housing, the unit simplifies installation and provides a ready-to-use solution for hazardous locations. The Bently Nevada 107770-03-03 is particularly valuable in rotating equipment monitoring programs that require dependable vibration data. Its solid-state design contributes to long service life and stable performance.

Unlike traditional transducers with moving components, the sensing technology used in the Bently Nevada 107770-03-03 relies on embedded electronics within a piezoelectric accelerometer. This approach eliminates mechanical wear and allows mounting in almost any orientation. Such flexibility helps maintenance personnel select locations that maximize vibration amplitude and frequency response. As a result, machine conditions that originate at the rotor can be detected more effectively.

The rugged construction of the Bently Nevada 107770-03-03 makes it suitable for demanding industrial environments. A hermetically sealed enclosure protects internal components against humidity, while the explosion-proof cable fitting enhances safety in hazardous areas. With shock resistance up to 5,000 g peak and CENELEC Zone 1 Group IIC approval, the Bently Nevada 107770-03-03 provides reliable vibration monitoring for critical machinery installations.

The 107770-03-03 Bently Nevada Velocity Transducer Housing may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Bently Nevada 107770-03-03 Velocity Transducer Housing 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 107770-03-03 Velocity Transducer Housing Specs

General

  • Manufacturer Bently Nevada
  • Model 107770-03-03
  • Condition New Original ready stock
  • Product Family 107770-03-01,107770-03-02,107770-01-03
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.
  • Mounting Threads: The mounting end uses a standard 1/2-14 NPT threaded interface, ensuring a rigid mechanical fastening between the protective cover and the machine housing.
  • Cable Outlet: Utilizes a specific -03 waterproof and explosion-proof cable sleeve or conduit for fully enclosed cable outlet.
  • Internal Wiring: Integrates a 2-pin Mil-C-5015 airtight stainless steel socket, with Pin A and Pin B corresponding to differential signal outputs.
  • System Integration: Directly connects to the front-end condition monitor of the Bently Nevada 3500 machine protection system via a dual-core shielded cable.
  • Explosion-proof Rating: The entire assembly is CENELEC/ATEX certified, complying with Zone 1, Group IIC hazardous area safety standards.
  • Housing Material: The protective cover housing is made of 316L high-grade stainless steel, providing excellent resistance to industrial chemical corrosion.
  • Protection Rating: Features a 100% non-immersion, fully sealed structure, meeting industrial dust and moisture protection standards of IP67/IP68.
  • Factory Testing: Before shipment, the 330500 Velomitor piezoelectric velocity sensor is pre-installed in the 21128 protective cover to ensure electrical insulation performance meets specifications.
  • Harsh Environments: Protects delicate internal Velomitor sensors from corrosive ammonia, oil splashes, and high humidity on offshore platforms.
  • Hazardous Plant Zones: Deployed safely in petrochemical refineries and gas processing plants requiring strict Zone 1 explosion protection.
  • Bearing Housing Safeguard: Mounts directly onto cooling tower fans or induction motor bearing housings to prevent external mechanical impacts.
  • Conduit Routings: Serves as a ruggedized conduit junction box that prevents wiring abrasion caused by structural machine vibrations.
Description
Built as an integrated assembly, the Bently Nevada 107770-03-03 combines the 330500 Velomitor piezo-velocity sensor with a pre-installed 21128 housing. The unit is approved for CENELEC Zone 1, Group IIC hazardous area applications, making it suitable for installations where explosion protection is required. The Bently Nevada 107770-03-03 measures absolute vibration relative to free space and is commonly used to monitor bearing housings, machine casings, and structural components.

At the core of the Bently Nevada 107770-03-03 is the 330500 Velomitor sensor, a solid-state piezoelectric accelerometer with embedded integrated electronics. Since the sensing element contains no moving parts, mechanical wear and degradation are minimized over time. The sensor can be mounted vertically, horizontally, or at virtually any orientation without affecting operation. This design provides flexibility when installing the Bently Nevada 107770-03-03 on different types of machinery.

The Bently Nevada 107770-03-03 features a 1/2-14 NPT mounting thread and a 1/2-14 NPT explosion-proof cable exit fitting equipped with a cable gland seal. Its hermetically sealed construction withstands relative humidity levels up to 100% in non-submerged environments and offers shock survivability up to 5,000 g peak. Operating temperatures range from +20 °C to +30 °C. Proper placement of the Bently Nevada 107770-03-03 on bearing housings or machine casings helps maximize amplitude and frequency response, improving the detection of machine conditions such as imbalance and misalignment.
Alternative Names
1O777O-O3-O3 I07770-03-03 1077700303 107770-03-01 107770-03-02 107770-01-03 107770-02-03 107770-04-03
Technical notes
Bently Nevada 107770-03-03 features a hermetically sealed construction, withstands shock levels up to 5,000 g peak, and utilizes 1/2-14 NPT explosion-proof connections for hazardous area vibration monitoring applications.
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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.
Why does Bently Nevada 107770-03-03 use a solid-state sensor design?
The solid-state construction eliminates moving parts, reducing mechanical wear and providing long-term reliability.
Which hazardous areas are supported by Bently Nevada 107770-03-03?
Bently Nevada 107770-03-03 is rated for CENELEC Zone 1, Group IIC hazardous area applications.
What mounting connection comes with Bently Nevada 107770-03-03?
The unit uses a 1/2-14 NPT mounting thread together with a 1/2-14 NPT explosion-proof cable exit fitting and cable gland seal.
Does Bently Nevada 107770-03-03 tolerate high humidity environments?
Yes. The hermetically sealed case allows Bently Nevada 107770-03-03 to operate in environments with up to 100% relative humidity under non-submerged conditions.

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