Why the 142238-120-00-05 Belongs in Your Spares Strategy
When a radial vibration channel drops out, every hour of downtime costs production. The 142238-120-00-05 from Bently Nevada is a 12-metre probe proximity vibration cable, built for 3300 and 3300 XL measurement chains. It carries the standard cable option and multiple approvals, so it fits the exact interface your machinery protection rack already expects.
This is a practical replacement part, not a project item. For oil, gas and industrial automation teams, that distinction matters: you want the right cable on a shelf or on a plane, not in a six-week queue.
What This Cable Actually Does
The 142238-120-00-05 extends the signal path between a 2-metre 3300 or 3300 XL probe and the 170133-140-XX 3300 14-metre Internal Proximitor Module. The 12-metre length (option 120) gives you reach across large machine housings without adding a junction. Option 00 confirms a standard cable build, and option 05 adds multiple approvals for plant environments that demand them.
Key Parameters at a Glance
| Parameter | Value |
|---|---|
| Center conductor resistance | 0.222 Ω/m (0.067 Ω/ft) |
| Shield resistance | 0.066 Ω/m (0.020 Ω/ft) |
| Capacitance | 69.9 pF/m (21.3 pF/ft) typical |
| Minimum bend radius | 25.4 mm (1.0 in) |
| Operating temperature | -51 °C to +177 °C (-60 °F to +350 °F) |
| Storage temperature | -51 °C to +177 °C (-60 °F to +350 °F) |
| Relative humidity | 100% condensing, nonsubmerged, 2 °C to 100 °C, connectors protected |
Those numbers tell an engineer three things. First, low shield resistance keeps noise pickup down on long runs. Second, 69.9 pF/m typical capacitance is predictable enough to keep your transducer-to-monitor loop stable. Third, the 25.4 mm bend radius is the number to respect during routing — tighter bends degrade the cable and skew readings.
Where It Earns Its Place
On a steam turbine train, a 12-metre run often reaches from the bearing housing to the protection cabinet without an intermediate connector. That removes a failure point and simplifies the loop.
On compressor packages in gas service, the wide -51 °C to +177 °C operating window covers both cold-start conditions and hot bearing housings. The cable keeps working where lesser assemblies stiffen or crack.
In humid coastal plants, the 100% condensing humidity rating — with connectors protected — supports installations where moisture is a constant. This is exactly the kind of environment where a fast, correct spare matters more than a cheap one.
Installation Notes
Route the cable away from high-current power runs and respect the 25.4 mm minimum bend radius at every clamp. Support long horizontal spans so the cable weight does not load the probe connector. Keep connectors dry and protected, particularly in condensing service.
If you are wiring into a 3300 or 3300 XL rack, confirm the probe length and Internal Proximitor Module part number match your loop before installation. A mismatch here is the most common cause of a channel that reads but never trusts.
Selecting the Right Cable
Before ordering, verify three things: the required total length, the connector option your probe uses, and whether your site requires the multiple-approvals configuration. The 142238-120-00-05 covers the 12-metre, standard cable, multiple-approvals case.
Please verify current lifecycle status and availability with Oil AutoTech before ordering. Oil AutoTech supplies fast-dispatch spares for oil, gas and industrial automation applications, with quick worldwide delivery and hands-on technical selection help. Contact Oil AutoTech today for pricing and availability.
