Description
Product Overview
Bently Nevada 330130-040-02-00 is a 4-meter non-armored triaxial extension cable built for the 3300 XL 8mm eddy current proximity transducer system. It connects the 8mm proximity probe to the matched Proximitor preamplifier, transmitting high-frequency signals used to measure shaft radial vibration, gap and axial position for 3500 machinery monitoring racks. This assembly uses ClickLoc miniature coaxial connectors fitted with pre-installed connector protectors to shield contacts from dust, moisture and minor mechanical abrasion. It is widely deployed on steam turbines, centrifugal compressors, generators and other high-value rotating equipment. The suffix 02 denotes cable with connector protectors; 00 indicates standard configuration with no agency certification paperwork included. OEM production has ended; available stock consists of surplus or refurbished tested replacement units for turbomachinery protection and condition monitoring systems.
Technical Specifications
| Item | Parameter |
|---|---|
| Part Number | 330130-040-02-00 |
| Manufacturer | Bently Nevada (Baker Hughes) |
| Product Type | Standard proximity probe extension cable |
| Series | 3300 XL 8mm |
| Cable Length | 4 m (13.1 ft) |
| Connector | ClickLoc miniature coaxial with integrated connector protectors |
| Construction | Triaxial 75Ω cable, FEP insulation, braided shield, non-armored outer jacket |
| Nominal Capacitance | 69.9 pF/m |
| Operating Temperature | -51°C to +177°C |
| Storage Temperature | -55°C to +180°C |
| Compliance | API 670 |
| Minimum Bend Radius | 25.4 mm |
| Weight | ~290 g |
Engineer Notes
- This cable works exclusively with standard 3300 XL 8mm probe assemblies. Sum of probe length plus extension cable length must match the factory-calibrated total length of the paired Proximitor sensor. Mismatched total length alters scale factor and creates measurement errors or false machine alarms.
- ClickLoc connectors are precision coaxial components. Do not over-twist, pull or contaminate contact surfaces during installation. The fitted protectors reduce connector exposure but do not eliminate rough handling risk. Damaged connectors lead to intermittent gap readings.
- Route the coaxial cable separately from high-current AC power and relay wiring. Electrical interference disturbs high-frequency eddy current signals and degrades transducer linearity.
- Maintain the minimum cable bend radius during routing. Sharp bends deform internal triaxial layers and change capacitance, invalidating factory transducer calibration.
- Non-armored jacket requires rigid conduit in areas with heavy abrasion, mechanical impact or flying debris. Secure cable supports to reduce vibration fatigue at connector junctions.
- Apply ESD controls while handling. Inspect connector seals and protectors before installation. After replacement, perform gap calibration and verify vibration and position readings on the monitoring rack.
Pre-Shipment Test Protocol
- Visual inspection: Check FEP jacket, triaxial cable, ClickLoc connectors and protectors for cuts, cracks, dents, corrosion or deformed contact pins.
- Continuity test: Verify center conductor continuity and confirm no short circuit between center conductor and shield layers.
- Capacitance measurement: Confirm total cable capacitance stays within factory tolerance band.
- Insulation resistance test: Validate high insulation resistance between inner conductor and shield.
- Bench functional test: Pair cable with known-good 3300XL 8mm probe and matched Proximitor, check gap response and linearity across measurement range.
- Save test logs and photos for QA records.
Buyer FAQ
Q: Can I swap 330130-040-02-00 with other length 3300XL extension cables? A: Connector style is identical, but total transducer assembly length changes Proximitor calibration. Confirm full probe + extension length before cutover.
Q: Is this cable compatible with 3300 XL NSv probe systems? A: No. This is standard 3300XL 8mm cable, not NSv series. Do not mix standard XL and NSv components.
Q: What does suffix 02 mean? A: 02 means standard cable equipped with connector protectors; the trailing 00 means no agency certification documentation included.
Q: Are proximity probe or Proximitor sensor included? A: Only the 4m extension cable with connector protectors is supplied. Probe and Proximitor sold separately unless noted on your quote.


