Bently Nevada 330130-035-01-CN 3300 XL 3.5m Extension Cable with FluidLoc Armor and CCC Ex Certification

The Bently Nevada 330130-035-01-CN is a 3300 XL 8mm armored extension cable, mostly used in eddy current displacement sensors setups. In real applications, it sits between the 3300 XL proximity probe and the Proximitor sensor, carrying low-attenuation high-frequency RF signals without much loss.

You’ll usually see it inside machinery vibration monitoring systems, especially where stable shaft vibration measurement and axial thrust position monitoring are required. It quietly supports accurate gap voltage telemetry, which is kind of the core of the whole measurement chain.

This part is a bit sensitive because it ties directly to total system electrical length and can trigger API 670 compliance calibration errors if wrong.

The 330130-035-01-CN is a 3.5 meter cable, so matching is done by total loop length:

• 5.0 m system → 1.5 m probe + 3.5 m cable
• 9.0 m system → 5.5 m probe + 3.5 m cable

Usually engineers double-check this during design stage. If the length is off, scale factor shifts (around 7.87 V/mm) and you may end up with false Machinery Protection System (MPS) alerts. Not something you want in a running unit.

The “01” version is the armored structure. It uses a FluidLoc coaxial cable with stainless steel armor, typically AISI 302 stainless steel. In practice, it helps prevent crushing inside turbine areas, and the FluidLoc layer also reduces oil or gas migration through the cable path.

The “CN” suffix is more about compliance. It means the cable is aligned with China-specific CCC Ex and NEPSI hazardous area certifications, which matters a lot in petrochemical plant instrumentation and power plant instrumentation projects. So in short: one is mechanical protection, the other is regulatory acceptance.

Yes, and installers usually don’t ignore this. The cable has a minimum bend radius of 25.4 mm (1.0 inch). Going tighter than that can affect the internal coax structure, and sometimes you’ll see noise creeping into the 3500/40M or 3500/42M Proximitor Monitor readings. Connectors are ClickLoc coaxial type, and in field practice they are often finger-tightened, then wrapped with silicone self-contained fusing tape if there’s risk of vibration or grounding issues. It’s not fancy, just practical site experience.

In many cases, electrically yes — the 330130-035-01-CN matches key specs like 0.222 Ω/m core resistance and 0.066 Ω/m shield resistance, so performance is basically the same as the 330130-035-01-05 version. So for emergency repair, vibration fault handling, or emergency shutdown system (ESD) situations, it generally works without issue. But for formal procurement or projects under strict compliance rules, the CN-certified version is usually the safer choice, especially when explosion-proof safety inspections are involved.