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84661-49

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84661-49 is a 49-foot armored 2-conductor 22 AWG shielded cable for Bently Nevada Velomitor sensors, featuring moisture-resistant connector and terminal lugs for monitor connection.
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Technical specifications for 84661-49

  • Manufacturer:
    Bently Nevada
  • Part Number:
    84661-49
  • Product Family:
    330500 Velomitor Piezo-velocity Sensor
  • Product Type:
    Armored Cable
  • Stock:
    2
  • Length:
    49 feet (14.9 meters)
  • Conductor Gauge:
    22 AWG
  • Number of Conductors:
    2 (twisted, shielded)
  • Armor:
    Stainless steel armored
  • Connector (Sensor End):
    2-socket moisture-resistant female connector
  • Termination (Monitor End):
    Terminal lugs
  • Minimum Length:
    3.0 feet (0.9 m)
  • Maximum Length:
    96 feet (29 m)
  • Length Increments:
    1.0 foot (305 mm)
  • Maximum Cable Length (no degradation):
    305 meters (1,000 feet)
  • Operating Temperature:
    -55°C to +121°C (-67°F to +250°F)
  • Weight:
    0.3 kg
  • Estimated shipping dimensions:
    27x27x3cm
  • Tariff Code:
    8544492100
  • 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 Application Operating Environment Monitoring and Control

Features:

  • 84661-49 provides 49-foot armored 2-conductor 22 AWG shielded cable for Velomitor sensor connectivity.
  • Stainless steel armor resists crushing and abrasion; moisture-resistant connector prevents ingress at sensor end.
  • Terminal lugs at monitor end; supports cable runs up to 305 meters without signal degradation.
The 84661-49 is engineered for permanent installation in demanding industrial environments where standard cables would quickly fail. The stainless steel armor provides a robust protective layer that resists crushing from heavy equipment, abrasion against sharp metal edges, cutting from tools, and impact damage from falling objects. This makes the 84661-49 ideal for turbomachinery monitoring applications where cables are routed along machine frames, through cable trays with other heavy cables, or in areas with foot traffic. The armor also provides protection against rodents that may gnaw on unprotected cables.

The 84661-49 uses 22 AWG (0.5 mm²) shielded twisted conductors to ensure clean, noise-free transmission of the low-level accelerometer signal. The Velomitor sensor produces a voltage output proportional to casing velocity, and these relatively low-level signals are susceptible to electromagnetic interference from nearby sources such as variable frequency drives, motor starters, large contactors, and radio transmitters. The twisted pair configuration cancels out common-mode noise induced equally on both conductors, while the overall shield provides an additional barrier against external electric fields. The shield also prevents the cable from radiating noise that could affect nearby instrumentation.

The 84661-49 is terminated with terminal lugs at the monitor end, simplifying permanent wiring to Bently Nevada monitors and data acquisition systems. Terminal lugs provide a secure, low-resistance connection when fastened to screw-type terminal blocks, eliminating the need for field stripping and tinning of small-gauge wire. This reduces installation time and the risk of wiring errors. The 2-conductor configuration accommodates the signal and ground connections typical of Velomitor sensors. The cable can be ordered in custom lengths from 3 to 96 feet in 1-foot increments by specifying the desired length in the part number.

The 84661-49 Bently Nevada Armored Cable may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).

Bently Nevada 84661-49 Armored Cable Manuals, Datasheets, Drivers, 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 84661-49 Armored Cable Specs

General

  • Manufacturer GE / Bently Nevada
  • Model 84661-49
  • Condition New Original ready stock
  • Product Family 84661-12,84661-30,84661-33
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.
  • Power Generation: Relays seismic vibration signals from gas, steam, and hydro turbines, as well as industrial generators.
  • Oil & Gas / Petrochemical: Used on critical balance-of-plant machinery like centrifugal compressors, turbo-expanders, and large-scale pumps.
  • Heavy Manufacturing: Deployed in paper mills, steel processing plants, and mining facilities on large motor-driven fans, blowers, and gearboxes.
  • Piping & Exhaust Systems: Connects sensors monitoring structural and aero-derivative piping vibration caused by high-pressure fluid loops.
  • Mechanical Protection: Encased in a rugged metal armor sheath that provides exceptional resistance against physical crushing, sharp-edge abrasion, and rodent punctures.
  • Thermal Performance: Typically handles continuous operating temperatures ranging from -40°C to +105°C (-40°F to 221°F), surviving deployment near hot exhaust casings or cold-climate installations.
  • Chemical & Moisture Resilience: Features a moisture-resistant female connector boot at the sensor end to lock out water, steam, synthetic oils, and corrosive industrial solvents.
  • Signal Integrity (EMI/RFI Shielding): The twisted-pair geometry combined with a high-density (typically 90%) tinned copper braid shield prevents electromagnetic interference. This keeps the low-voltage 4-20mA or AC velocity signals pristine across its 49-foot span.
  • Hardware Integration: Connects the field sensor directly to major machinery protection racks, such as the Bently Nevada 3500 Series or the next-generation Orbit 60 Distributed Protection System.
  • Diagnostic & Safety Automation: By providing noise-free real-time vibration metrics, it enables the control system to detect anomalies like unbalance, misalignment, or bearing wear. The connected monitor can then trigger early alarms or initiate an automatic emergency machinery shutdown (Trip) via safety-certified relays (API 670 / SIL 2 compliant systems).
Description
The 84661-49 is a high-quality armored interconnect cable designed for Bently Nevada Velomitor Piezo-velocity Sensors. This 49-foot (14.9-meter) cable features 2-conductor twisted, shielded 22 AWG construction with stainless steel armor for mechanical protection. The 84661-49 has a 2-socket moisture-resistant female connector at the sensor end and terminal lugs at the monitor end for permanent wiring. 

The armored construction of 84661-49 provides excellent resistance to crushing, abrasion, and mechanical damage in harsh industrial environments. With a minimum length of 3.0 feet and maximum of 96 feet, the 84661-49 at 49 feet offers substantial reach for connecting Velomitor sensors to remote monitoring panels. The shielded twisted conductors minimize electromagnetic interference from nearby motors, variable frequency drives, and other electrical equipment. 

The 84661-49 is compatible with Bently Nevada 330500 Velomitor sensors, which measure absolute bearing housing, casing, or structural vibration. The moisture-resistant connector at the sensor end prevents ingress of oil, water, and dust. The 84661-49 is suitable for permanent installation in machinery monitoring applications such as turbines, compressors, and pumps. 

The 84661-49 operates in temperatures from -55°C to +121°C (-67°F to +250°F), matching the sensor's environmental rating. The 84661-49 is available in custom lengths from 3 to 96 feet in 1-foot increments by specifying the desired length in the part number. The armored construction includes stainless steel armor for mechanical protection, making the 84661-49 ideal for installations where cables are exposed to physical abuse. 
Alternative Names
8466I-49 84661 49 84661-6 84661-8 84661-17 84661-20 84661-33 84661-12
Technical notes
The 84661-49 is a 49-foot armored 2-conductor 22 AWG shielded cable for Bently Nevada 330500 Velomitor sensors. Features stainless steel armor, moisture-resistant connector, terminal lugs, and -55°C to +121°C rating. Maximum length 96 feet. Compatible with monitors only. Not for use with 21128 housing. Ideal for permanent vibration monitoring installations.
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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 sensor works with 84661-49?
84661-49 is compatible with Bently Nevada 330500 Velomitor Piezo-velocity Sensors for bearing housing and casing vibration monitoring.
What is the length of 84661-49?
84661-49 is 49 feet (14.9 meters) long. Custom lengths from 3 to 96 feet can be ordered in 1-foot increments.
Does 84661-49 have armor protection?
Yes, 84661-49 features stainless steel armor for crushing and abrasion resistance in harsh industrial environments.
Can 84661-49 be used with 21128 Housing?
No, 84661-49 is not for use with the 21128 Velocity Transducer Housing. For housing applications, use cable 89477 instead.

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