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The 128608-02 is a 1/2-in NPT conduit adapter exclusively for use with the 190501 Velomitor CT transducer. As a critical component for system connection, this adapter functions to protect cables and seal the environment in vibration monitoring installations, preventing moisture, dust, and mechanical forces from disrupting the transducer's signal integrity, thereby ensuring reliable electrical connectivity. Relying on its standard 1/2-in NPT threads, the 128608-02 easily integrates into existing conduit systems at industrial facilities.
Strict Dust Seal / Prevention of Contaminants
Protects Raw Signals from Physical Damage for Reliable Data Sources
The Velomitor CT Velocity Transducer is a low-frequency version of our standard Velomitor Piezo-velocity Sensor. Its design specifically measures casing vibration velocity on cooling tower and air-cooled heat-exchanger fan assemblies that operate at or above 90 rpm (100 to 300 rpm typical). The Velomitor CT Transducer can measure vibration amplitudes at these frequencies as well as the vibration frequencies generated by the fan motor and speed reducer. To secure the continuous operation of this transducer system within the extreme industrial environments inside cooling towers—characterized by high humidity, constant water spray, and heavy dust—a dedicated protective interface is mandatory.
The Bently Nevada 128608-02 is the critical component developed for this exact purpose. As a standard 1/2-in NPT conduit adapter, the 128608-02 threads directly into the top connection terminal of the 190501 Velomitor CT transducer, serving as an indispensable physical bridge between the transducer body and the external cable protection conduit. This adapter acts as a rugged environmental barrier within the vibration monitoring network.
By providing a tight mechanical seal over the field wiring area, it completely blocks the ingress of external moisture, corrosive chemical gases, and solid particles, thereby protecting the raw vibration signals from physical destruction at the very start of transmission. This safeguard for electrical connectivity ensures that subsequent monitoring modules (such as the Bently Nevada 3500 system) receive authentic and untainted source data.
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 128608-02 Conduit Adapter 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.
Power Generation
Protects vibration sensor cables on gas turbines, steam turbines, and balance-of-plant (BOP) equipment like boiler feed pumps and forced draft fans.
Petrochemical & Refining
Connects velocity sensors to explosion-proof conduits in hazardous areas to protect critical machinery such as centrifugal compressors.
Pulp & Paper
Envelopes sensor lead wires in paper machine dryer sections characterized by high temperature, high humidity, and aggressive mechanical abrasion.
Steel & Metallurgy
Guards cables against flying slag and heavy mechanical impacts in harsh environments like hot rolling mills and blast furnace blowers.
Chemical Processing
Utilizes stainless steel construction to block corrosive chemical vapors during vibration monitoring of reactors and agitators.
Oil & Gas Upstream
Provides salt-spray resistant physical conduit interfaces on offshore drilling platforms or onshore water injection pumps.
During installation, apply an appropriate amount of PTFE tape or thread sealant to the 1/2-in NPT threads to prevent moisture from seeping along the threads into the wiring chamber. Use proper tools to control torque when tightening, avoiding excessive force that could strip the threads or damage the 190501 transducer housing. Additionally, during periodic major overhauls, it is essential to inspect the O-rings at the adapter-to-conduit connections for aging, and check cables for pulling or mechanical wear, ensuring the long-term integrity of the signal pathway.
Alternative Names
Alternative Names
128608 02I28608-021286O8-02128608-O2
Technical notes
Technical notes
Part number 128608-02 is a physical connection component fabricated for industrial vibration monitoring systems. In terms of physical structure, this assembly functions as a mechanical interface adapter, featuring an internal 3/8-24 UNF fine thread on one end for axial mating with the 190501 velocity sensor body, and a standard 1/2-inch NPT tapered pipe thread on the opposite end to establish a sealed conduit passage with field flexible metal hoses or piping.
The 128608-02 is a 1/2-in NPT conduit adapter manufactured by Bently Nevada.
Which transducer system does the 128608-02 belong to?
It is exclusively used for the Bently Nevada 190501 Velomitor CT velocity transducer system.
What is the primary use of the 128608-02?
It acts as an interface component between the transducer and external metal conduits to protect cables and seal the field environment.
How to install and use the 128608-02 on site?
Thread one end directly into the top of the 190501 transducer, and tighten the other end to the factory's 1/2-in NPT flexible or rigid conduit.
What are the thread specifications of the 128608-02?
It uses the industry-standard 1/2-in NPT (National Pipe Thread) specifications.
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