135473-01 specialized sensor extension cable

BENTLY 135473-01 is a specialized sensor extension cable developed by Bently Nevada, specifically designed for connecting proximity probes (eddy current probes) to signal conditioners or monitoring modules in the 3500 Series Machinery Protection System. As a critical accessory for precision vibration and position monitoring of rotating machinery (e.g., turbines, generators, compressors), it ensures stable signal transmission between sensors and monitoring equipment, avoiding signal attenuation or interference that could affect detection accuracy. The detailed information is as follows:

1. Basic Overview

Category	Details
Product Type	Proximity probe extension cable (for eddy current proximity sensors)
Part Number	135473-01
Cable Type	Shielded twisted-pair (STP) cable – minimizes electromagnetic interference (EMI)
Cable Length	Standard length: 3 meters (custom lengths available upon request for specific on-site needs)
Weight	Approximately 0.25 kg (varies slightly with length)
Connector Type	Male/female bayonet connectors (compatible with Bently Nevada 3300/3500 series proximity probes and signal conditioners, e.g., 3500/20 monitor modules)
Operating Temperature Range	-40°C to +85°C – suitable for harsh industrial environments (e.g., turbine enclosures, engine rooms)

2. Core Technical Specifications

2.1 Electrical Performance (Critical for Signal Integrity)

Impedance: 50 ohms ±10% (at 1 MHz) – matches the impedance of Bently Nevada eddy current probes, ensuring no signal reflection or distortion during transmission.
Signal Attenuation: ≤0.5 dB/m (at 200 kHz) – low attenuation ensures that high-frequency vibration/position signals (typical for rotating machinery monitoring) remain accurate even over the maximum standard length.
Shielding Effectiveness: ≥85 dB (from 100 kHz to 1 GHz) – the tinned copper braid shield blocks external EMI (e.g., from motor cables, power lines) and radio frequency interference (RFI), preventing false signals in precision monitoring.
Insulation Resistance: ≥100 MΩ (at 500 V DC) – high insulation resistance avoids leakage current, which could cause measurement errors or damage to sensors/monitor modules.

2.2 Mechanical & Environmental Durability

Cable Jacket Material: Polyvinyl chloride (PVC) with oil-resistant and flame-retardant properties (compliant with UL 94 V-0 flammability standard) – resistant to industrial oils, coolants, and minor chemical exposure.
Flexibility: Minimum bend radius – 10× cable diameter (static) / 15× cable diameter (dynamic) – allows easy routing in tight spaces (e.g., between machinery components) without damaging the cable or shield.
Moisture Resistance: IP65-rated connectors (when mated) – prevents water, dust, or debris from entering the connection point, critical for outdoor or humid environments (e.g., offshore platforms, power plant damp areas).

3. Functional Role & Compatibility

3.1 Key Function in Machinery Monitoring Systems

Bently Nevada proximity probes (e.g., 330180 series) are used to measure shaft vibration (radial/axial) and shaft position (e.g., thrust position, eccentricity) of rotating machinery. The 135473-01 extension cable acts as a "bridge" between the probe (installed directly on the machinery) and the signal conditioner/monitor module (mounted in a control cabinet). Its core role is to:

Transmit the low-level eddy current signal from the probe to the monitor module without distortion.
Protect the signal from external interference (common in industrial settings with high-voltage equipment or large motors).
Provide a durable, reliable connection that withstands mechanical vibration (from the machinery) and environmental stress.

3.2 Compatibility

This cable is fully compatible with Bently Nevada’s core monitoring products, including:

Proximity Probes: 330180 series (e.g., 330180-50-05), 330190 series, and other 3500-compatible eddy current probes.
Signal Conditioners/Monitor Modules: 3500/20 (position/vibration monitor), 3500/22 (speed/tachometer monitor), and 3300 series signal conditioners.
Machinery Types: Gas turbines, steam turbines, generators, centrifugal compressors, pumps, and other critical rotating equipment in power generation, oil & gas, and petrochemical industries.

4. Product Advantages (vs. Generic Cables)

Optimized for Precision Monitoring: Unlike generic cables, 135473-01 is engineered to match Bently Nevada’s sensor/monitor ecosystem – ensures no compatibility issues or signal loss, which is critical for machinery protection (e.g., avoiding false alarms or missed fault detections).
Industrial-Grade Reliability: The shielded design, oil-resistant jacket, and wide temperature range make it suitable for harsh industrial environments, whereas generic cables may fail due to EMI, oil exposure, or temperature extremes.
Easy Installation: Pre-terminated bayonet connectors enable "plug-and-play" installation – no on-site soldering or crimping required, reducing installation time and human error.

5. Typical Application Scenarios

Power Generation: Connecting 330180 proximity probes on steam turbine shafts to 3500/20 monitor modules in control rooms, ensuring accurate vibration monitoring to prevent turbine damage.
Oil & Gas: Used in centrifugal compressors (e.g., in pipeline stations) to extend the probe signal from the compressor casing to the 3500 system cabinet, avoiding EMI from nearby pipeline pumps.
Marine Engineering: Installed in shipboard diesel generators to connect shaft position probes to monitoring systems, withstanding high humidity and vibration in engine rooms.
Petrochemical Plants: Used with gas turbine proximity probes in refineries, where the oil-resistant jacket protects the cable from exposure to process oils and fuels.

The company has multiple main brands, and if you have other brand requirements, you can also send them to customer service for inquiry.