With more than 30.000 high-quality spare parts, they can be sold immediately. Our large inventory allows us to quickly meet customer needs, thereby reducing downtime and protecting production schedules. Our timely delivery time provides you with security and save money.
The 84661-18 Accelerometer is intended for critical machinery applications where casing acceleration measurements are required, such as gear mesh monitoring. It is designed to address the requirements of American Petroleum Institute (API) Standard 670 for accelerometers. It provides an amplitude range of 50 g peak and a sensitivity of 100 mV/g.
API 670 Compliance
Advanced Signal Integrity
Corrosion & Fluid Resistance
The 84661-18 features factory-terminated, precision-engineered connectors that guarantee an airtight, moisture-proof seal upon installation. This integration eliminates the need for complex, time-consuming crimping or specialized tools. The connector assembly withstands continuous operational vibrations without loosening, ensuring a reliable electrical connection that preserves the precise 100 mV/g or 25 mV/g sensitivity curves of the 330400 and 330425 accelerometers.
Continuous exposure to aggressive industrial elements requires uncompromising physical endurance. The outer layers of the 84661-18 utilize advanced composite materials that prevent chemical degradation from synthetic lubricants, petrochemical solvents, and caustic washdowns. By establishing an impermeable barrier against moisture and vapor ingress, the cable isolates internal signal lines from corrosive atmospheres, thereby preventing dielectric breakdown and micro-shortages over decades of service. This sustained isolation directly translates into dependable machinery protection, mitigating the risk of undetected mechanical faults in high-velocity gearboxes, high-pressure pumps, and critical steam turbines.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Bently Nevada 84661-18 Armored Interconnect 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.
Petroleum Refining and Refineries
Used to connect Velomitor velocity sensors on hydroprocessing feed pumps and high-pressure heavy oil pumps, transmitting absolute casing vibration signals across hazardous areas filled with oil mist and flammable gases.
Thermal Power Generation
Deployed on the casings and bearing pedestals of induced-draft fans, primary air fans (PAF), and large boiler feedwater pumps to withstand high temperatures and high-amplitude mechanical vibrations around generator halls.
Petrochemicals and Chemical Industry
Used to connect absolute vibration probes on agitators, centrifuges, and auxiliary cooling tower fans, where the stainless steel armor prevents cables from being eroded by highly corrosive chemical liquids like strong acids and alkalis.
Hydroelectric Power Generation
Connects absolute vibration sensors on the frames and runner chambers of vertical or horizontal hydro-generator units, with its moisture-resistant military connector perfectly handling high humidity and water vapor inside the station.
Fertilizer Manufacturing and Ammonia Industry
Used for casing absolute vibration measurements on syngas compressors and high-pressure CO2 pumps, where its fully sealed stainless steel hose provides long-term resistance against the permeation of highly corrosive ammonia gas.
Marine Engineering and Shipbuilding
Monitors bedrock and foundation vibrations of main propulsion diesel engines and marine turbo-generator sets aboard ocean-going vessels, with the stainless steel armor preventing galvanic corrosion of core twisted wires in high salt-spray marine environments.
When using the Bently Nevada 84661-18 armored cable, never install it inside the 21128 housing. During routing, strictly adhere to the minimum bend radius and avoid excessive pulling or twisting to protect the stainless steel armor and internal wires.
When connecting to the Velomitor sensor, the 2-pin military connector must be fully tightened with the sealing boot perfectly intact to prevent oil mist or moisture ingress from short-circuiting the signal. Additionally, keep the ambient temperature strictly within the rated range of -29°C to 121°C to prevent premature thermal degradation of the insulation layer.
Alternative Names
Alternative Names
84661-I88466I-188466I-I884661 18
Technical notes
Technical notes
It delivers strong EMI resistance across -29°C to 121°C. The flexible stainless steel armor strongly protects against physical impacts and scratches—eliminating the need for external conduits while ensuring clean vibration signals to prevent costly false equipment trips.
It is an industrial-grade, 2-conductor shielded interconnect cable with a stainless steel armor protective layer used to transmit analog vibration signals from velocity sensors.
What material is the external armor of 84661-18 made of?
Its external armor layer is constructed of 304 stainless steel to resist physical crushing and mechanical wear.
How to use products like 84661-18?
Thread and lock the end with the 2-pin MIL connector onto the velocity sensor, and connect the blunt-cut end into a field junction box or monitoring instrument.
Which sensor models are compatible with 84661-18?
It is specifically compatible with 330500 Velomitor Velocity Sensors and 330505 Low Frequency Velocity Sensors.
What is the structure and specification of the internal conductors of 84661-18?
It contains two 22 AWG stranded copper conductors wrapped in an overall braided shield layer.
Trusted by 5,000+ plants worldwide | Backed by our vast inventory of top-tier control parts, modules and cards, fast shipments are dispatched to cover your urgent needs. ABOUT US >>
Disclaimer: We are not an authorized distributor or distributor of the product manufacturer of this website, The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because our company is not an authorized distributor of this product, the Original Manufacturer`s warranty does not apply.While many DCS PLC products will have firmware already installed, Our company makes no representation as to whether a DSC PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. Our company also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from our company, its distributors, or any other source. Our company also makes no representations as to your right to install any such firmware on the product. Our company will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.
Videos
News
Applications
