Bently Nevada 330130-070-01-05 Extension Cable 7m

Product Introduction

The Bently Nevada 330130-070-01-05 extension cable connects your 3300 XL 8 mm probe to the Proximitor Sensor with exceptional signal integrity. This 7.0-meter (22.9 feet) armored cable suits critical rotating machinery monitoring, including steam turbines, gas compressors, and large pumps. First, its robust construction minimizes signal loss across long runs. Next, the armored outer layer provides extra protection against mechanical stress and abrasion. Furthermore, this cable carries multiple global approvals, making it a versatile choice for international projects.

Technical Specifications for the 330130-070-01-05

The Bently Nevada 330130-070-01-05 maintains precise electrical characteristics for accurate proximity measurements. Specifically, the center conductor resistance (RCORE) measures 1.54 ± 0.23 Ω at 7.0 meters. Meanwhile, the outer conductor resistance (RJACKET) is 0.46 ± 0.09 Ω at the same length. Additionally, the cable exhibits a typical capacitance of 69.9 pF/m (21.3 pF/ft), which ensures consistent frequency response.

For power requirements, the Proximitor Sensor connected to this cable needs -17.5 Vdc to -26 Vdc under nonincendive circuit conditions. When using barriers, the supply range narrows to -23 Vdc to -26 Vdc. Moreover, the system draws a maximum of 12 mA. Supply sensitivity stays below 2 mV change per volt change, safeguarding measurement stability. Consequently, you get reliable vibration and position data for predictive maintenance programs.

Environmental and Mechanical Durability

The Bently Nevada 330130-070-01-05 excels in harsh conditions. Its armored construction weighs 103 g/m (1.5 oz/ft), totaling 0.618 kg for the full length. In contrast, the non-armored version weighs only 34 g/m (0.4 oz/ft). Therefore, this armored cable tolerates higher mechanical loads and resists oil ingress—especially when paired with the optional FluidLoc feature. This option prevents oil from migrating through the cable interior, a common issue in turbine applications.

Additionally, the probe system uses a Viton® O-ring to seal differential pressure between the tip and case. However, note that the factory does not pressure-test each unit. If your application demands specific pressure sealing verification, contact the custom design department beforehand. Furthermore, humidity testing per IEC 68-2-3 shows less than 3% change in Average Scale Factor (ASF) after 56 days at 93% humidity. Thus, the cable performs consistently in humid environments.

Installation Guidelines for the 330130-070-01-05

Proper installation ensures optimal performance for your Bently Nevada 330130-070-01-05. First, follow installation drawing 140979 for nonincendive circuit connections. For field wiring, use 0.2 to 1.5 mm² (16 to 24 AWG) tinned copper wires. We strongly recommend using 3-conductor shielded triad cable for best noise immunity. Additionally, the maximum field wiring length between the Proximitor Sensor and the monitor is 305 meters (1,000 feet). Longer lengths affect high-frequency signal rolloff, so consult the frequency response graphs (Figures 10 and 12) in the manual.

When connecting the probe to the extension cable, apply the included silicone tape as a connector protector. Nevertheless, do not use this tape in turbine oil environments, as oil degrades the silicone. For oil-exposed connections, consider ordering connector protectors separately. Moreover, ensure the probe gap is set at 1.25 mm to 1.30 mm (approximately 50 mils) for ideal linear range. The linear measurement range spans from 0.25 mm to 2.3 mm (10 to 90 mils), producing -1 to -17 Vdc output.

Performance and System Compatibility

This extension cable exclusively works with 3300 XL 8 mm components for full system accuracy. All performance specifications apply when using an AISI 4140 steel target at 18–27°C, with a -24 Vdc power supply and 10 kΩ load. Using non-standard targets may reduce interchangeability. Therefore, always calibrate with Bently Nevada’s recommended target material.

The patented TipLoc molding method ensures a durable bond between the probe tip and body. Similarly, CableLoc technology boosts pull strength to 330 N (75 lbf). Consequently, the connection withstands vibration and accidental tugs during maintenance. These design improvements extend service life and reduce false readings from loose connections.

Packaging List for 330130-070-01-05

• One (1) Bently Nevada 330130-070-01-05 armored extension cable, 7.0 meters

• Silicone tape for connector protection (one roll)

• Installation instruction sheet (quick start guide)

Frequently Asked Questions (FAQ)

1. Can I use the Bently Nevada 330130-070-01-05 with older 3300 series probes?
Yes, this cable works with earlier 3300 probes, but full accuracy is guaranteed only with 3300 XL 8 mm systems. Always verify connector compatibility before installation.

2. How do I prevent oil ingress through the 330130-070-01-05 cable?
Order the FluidLoc cable option for oil-blocking protection. The standard cable does not include this feature, so silicone tape alone is insufficient for oil-exposed applications.

3. What is the maximum field wiring distance for this extension cable?
Between the Proximitor Sensor and monitor, you can run up to 305 meters (1,000 feet) using 3-conductor shielded triad cable. Longer runs may attenuate high-frequency signals.

4. Is the 330130-070-01-05 suitable for ATEX Zone 1 areas?
Absolutely. This model carries ATEX, IECEx, and CSA approvals, making it safe for Zone 1, Zone 2, and Class I, Division 2 hazardous locations when installed per drawing 140979.

5. Does the cable require periodic replacement or maintenance?
No scheduled maintenance is required. However, inspect the cable for cuts, abrasion, or connector damage annually. Replace if the jacket is compromised or resistance values drift outside specifications.