Bently Nevada 330854-040-24-00 3300 XL 25 mm Extension Cable

Model: 330854-040-24-00
Brand: Bently Nevada (Baker Hughes)
Series: 3300 XL 25 mm Proximity Transducer System
Core Function: High-temperature FluidLoc extension cable designed to connect a 3300 XL 25 mm proximity probe to the corresponding Proximitor Sensor. Used primarily for differential expansion (DE) measurements on medium to large steam turbines.
HS Code: 8544.42 / 9031.90 (Insulated electrical conductors / Parts of measuring instruments – confirm local classification)

Product Parameters

Parameter	Specification
Product Type	Extension Cable for 3300 XL 25 mm Proximity Probe
Cable Length	4.0 meters (13.1 feet)
Cable Type	High Temperature FluidLoc cable
Armor Option	High Temperature FluidLoc (option 24)
Agency Approval	None (option 00)
Cable Construction	75 Ω triaxial, PFA insulated FluidLoc cable
Typical Capacitance	69.9 pF/m (21.3 pF/ft)
Weight	Approx. 45 g/m (0.5 oz/ft)
Operating Temperature	–35 °C to +200 °C (–31 °F to +392 °F) typical for high-temp FluidLoc
Connectors	Miniature coaxial ClickLoc connectors (male/female)
Compatible System	3300 XL 25 mm Proximity Probe + 3300 XL 25 mm Proximitor Sensor
Linear Range (System)	12.7 mm (500 mils) when used with matching 25 mm system
System Sensitivity	0.787 V/mm (20 mV/mil)

Advantages and Features

Specifically designed for the 3300 XL 25 mm transducer system used in differential expansion applications
High-temperature FluidLoc cable construction for reliable performance in elevated temperature environments
ClickLoc connectors provide secure, vibration-resistant connections that resist loosening
Maintains signal integrity and system accuracy when total probe + cable length matches the Proximitor Sensor
Robust PFA insulation and FluidLoc design for resistance to oils, chemicals, and harsh industrial conditions
Part of the proven Bently Nevada 3300 XL family trusted in critical rotating machinery monitoring

Application Cases in Application Fields

Differential Expansion (DE) measurement on steam turbine generators
Rotor-to-casing relative growth monitoring on medium and large steam turbines
Power generation plants (thermal power stations)
Industrial steam turbines in process industries
Machinery protection and condition monitoring systems requiring 25 mm proximity probes
Retrofit and replacement of existing 3300 XL 25 mm extension cables

Comparisons with Competing Products

Aspect	Bently Nevada 330854-040-24-00	Generic Extension Cables	Other Bently 3300 XL Cables
System Compatibility	Native 3300 XL 25 mm	May require adapters	Fully compatible within family
Temperature Rating	High-temperature FluidLoc	Standard	Varies by option
Connector Type	ClickLoc (secure locking)	Standard coaxial	ClickLoc
Length Accuracy	Precision matched	Variable	Precision matched
Best For	Differential expansion on turbines	General use	Specific length/armor needs
Reliability	High (OEM specification)	Medium	High

Selection Suggestions and Precautions

Selection Suggestions:

Ensure the total length of the proximity probe + this extension cable equals the electrical length required by the 3300 XL 25 mm Proximitor Sensor.
Confirm the probe is also a 3300 XL 25 mm type (e.g., 330851 series).
Choose high-temperature FluidLoc (option 24) when the cable will be exposed to elevated temperatures or harsh fluids.
Verify agency approval requirements; this version has no approvals (00).

Precautions:

Never mix cable lengths or types that do not match the Proximitor Sensor’s calibrated length — this will degrade system accuracy.
Protect connectors from contamination and mechanical damage during installation.
Follow Bently Nevada installation guidelines for routing, bending radius, and grounding.
Use only genuine Bently Nevada probes, cables, and Proximitor Sensors for proper system performance and warranty coverage.
After installation, perform a system calibration check (gap voltage and linearity verification).