Complete Technical Documentation for Bently Nevada 330104-04-10-05-01-CN

Product Overview

The Bently Nevada 330104-04-10-05-01-CN is a specialized 3300 XL series 8mm proximity probe system designed for non-contact displacement, vibration, and position measurement in rotating machinery applications within the Chinese domestic market. This model features a standard side-exit cable configuration with metric M10×1 threads, a very short 4mm unthreaded length, a compact 0.5 meter integral cable, flying lead termination, and the unique “CN” suffix which indicates a China-specific certification, packaging, and documentation package.

The probe operates on the eddy current principle. A high-frequency oscillator circuit inside the proximitor drives a precision coil hermetically sealed within the probe tip. When the probe tip approaches a conductive shaft surface (typically steel), eddy currents induced in that surface create an opposing magnetic field, changing the coil impedance. The proximitor demodulates this impedance change into a DC voltage that is linearly proportional to the gap distance. Over the 2mm measurement range, this probe achieves ±0.2% linearity and maintains a sensitivity of 7.87 V/mm across an extreme temperature range from -52°C to +177°C.

The defining characteristics of the 330104-04-10-05-01-CN are threefold. First, the flying lead termination (suffix “01”) eliminates connector failure points and allows direct wiring to Chinese standard terminal blocks. Second, the very short 0.5 meter cable allows the proximitor to be mounted immediately adjacent to the probe, which is common practice in Chinese machinery designs where junction boxes are mounted directly on bearing housings. Third, the “CN” suffix indicates that the probe meets Chinese national standards for explosion protection (GB3836 series), has Chinese language documentation and packaging, and is certified for use with Chinese-made proximitors that are locally manufactured under license.

The “01-CN” suffix requires explanation. The “01” indicates the extension cable interface code for flying leads with stripped and tinned ends. The “CN” indicates a China-market configuration that includes Chinese language labels on the probe and cable, a factory calibration certificate in Chinese with traceability to Chinese national standards (NIM), packaging compliant with Chinese hazardous material regulations (GB 190), and certification for use in Chinese hazardous area classifications (Ex na IIC T4 Gc). This model is physically identical to the standard 330104-04-10-05-01-00 in terms of electrical performance, but the documentation and certification are tailored for direct sale and use within China without requiring additional import documentation or translation.

Product Parameters

Product Applications

The 330104-04-10-05-01-CN is specifically intended for the Chinese industrial market, where machinery protection standards, installation practices, and certification requirements differ from international versions. Below are the primary applications with detailed operational descriptions.

Chinese Petrochemical Refinery Compressor Monitoring
China’s large petrochemical complexes (e.g., Zhenhai, Dushanzi, Yangzi) operate thousands of centrifugal and reciprocating compressors. The CN version meets Chinese explosion protection standards (GB 3836) without requiring additional import certification. The flying lead termination allows direct wiring into Chinese-made junction boxes that use metric terminal blocks (2.5mm² to 4mm²). Probes are installed on hydrogen compressor feed gas compressors, cracking gas compressors, and product compressors. The 0.5 meter cable is ideal when the proximitor is mounted in a local junction box attached directly to the compressor casing, a common Chinese design practice.

Chinese Coal Chemical Synthesis Gas Compressors
China’s coal-to-chemicals industry (coal to olefins, coal to ethylene glycol, coal to methanol) uses large synthesis gas compressors. These facilities often have on-site coal gasification units that produce raw synthesis gas containing sulfur compounds. The CN version’s certification for Zone 2 hazardous areas covers the typical classification around these compressors. The short 0.5 meter cable minimizes exposure to the dirty gas environment. Typical installations include the synthesis gas compressor on a 600,000 ton/year methanol plant and the recycle gas compressor on a coal-to-olefins unit.

Chinese Power Plant Steam Turbine Bearing Monitoring
China’s coal-fired power plants (300MW, 600MW, 1000MW units) use proximity probes on all turbine bearings. Many plants have specific procurement requirements for instruments with Chinese language documentation and local certification. The CN version includes a Chinese calibration certificate traceable to the National Institute of Metrology (NIM), which satisfies Chinese regulatory requirements for power plant instrumentation. Probes are installed on high-pressure (HP), intermediate-pressure (IP), and low-pressure (LP) turbine bearing housings, typically eight to twelve probes per turbine-generator string.

Chinese Nuclear Power Plant Conventional Island Monitoring
China’s nuclear power plants (CPR1000, Hualong One, AP1000 designs) require additional documentation and certification for all safety-related instrumentation. While the CN version is not rated for safety-class applications (Class 1E), it is used on conventional island equipment such as turbine-driven feedwater pumps, condensate extraction pumps, and cooling water pumps. The Chinese language documentation simplifies the procurement and inspection process for Chinese nuclear operators.

Chinese Natural Gas Pipeline Compressor Stations
China’s West-East Gas Pipeline and other long-distance natural gas pipelines use compressor stations with gas turbine or electric motor-driven centrifugal compressors. These stations are often in remote locations with limited technical support. The CN version’s standard flying lead termination allows local technicians to troubleshoot and replace probes using common electrical tools without needing specialized connector crimping tools. The 0.5 meter cable is typically sufficient to reach the proximitor mounted in a station junction box.

Chinese Steel Mill Rolling Mill Drives
Steel mills in China (Baosteel, HBIS, Shagang) use large DC and AC drives for rolling mill stands. These drives have thrust bearings and journal bearings that require proximity probe monitoring. The environment includes fine iron oxide dust, water spray, and high temperatures. The CN version’s PVC cable jacket is sufficient for this environment when routed through conduit. The flying leads are terminated in dust-tight junction boxes. Typical applications include roughing stands, finishing stands, and coilers on hot strip mills.

Chinese Cement Plant Kiln Drive Pinion Bearings
Cement plants in China have large rotary kilns (4m to 6m diameter, 60m to 100m length) driven by large gear and pinion drives. The pinion bearings are critical and require vibration monitoring. The environment includes cement dust that is mildly alkaline and abrasive. The CN version’s flying leads allow sealing with heat-shrink tubing inside the junction box to prevent dust ingress. The short 0.5 meter cable keeps the proximitor close to the probe, reducing cable exposure to dust.

Chinese Offshore Oil Platform Topside Compressors
China’s offshore oil and gas fields (Bohai Bay, South China Sea) use platform-mounted compressors. While the CN version does not have the corrosion-resistant “05” specification, it is used in weather-protected topside enclosures where salt exposure is limited. The CN certification simplifies procurement for Chinese-operated platforms that are not subject to international standards. The flying lead termination allows the use of locally available terminal blocks and junction boxes.

Chinese Locomotive Traction Motor Bearing Monitoring
China’s high-speed rail (CRH) and heavy-haul freight locomotives use proximity probes on traction motor bearings. The CN version meets Chinese railway standards (TB/T 3058) for vibration monitoring equipment. The short 0.5 meter cable and flying leads are compatible with the tight spaces inside locomotive bogies. The probe is installed on the non-drive end bearing of the traction motor, monitoring both radial vibration and axial position.

Chinese Pharmaceutical Cleanroom HVAC Fan Monitoring
Pharmaceutical plants in China require continuous monitoring of critical HVAC fans that supply cleanroom air. The CN version’s Chinese language documentation simplifies the validation process required by Chinese Good Manufacturing Practice (cGMP). The flying leads are terminated in stainless steel junction boxes with sanitary fittings. The probe monitors the fan bearing housings, providing early warning of bearing degradation before contamination of the cleanroom.

Product Advantages

Chinese National Certification (CN Specification) eliminates the need for separate import approval, translation, or re-certification when used in China. The probe carries GB3836 explosion protection marking, a Chinese calibration certificate traceable to NIM (National Institute of Metrology), and Chinese language documentation. This reduces project lead time and simplifies regulatory compliance for Chinese end users.

Flying Lead Termination removes connector pins and sockets, which are common failure points in high-vibration environments. Chinese maintenance technicians are familiar with direct wiring using terminal blocks, and the flying lead design allows troubleshooting with basic multimeters without needing connector breakout cables.

Very Short 0.5 Meter Cable matches the typical Chinese machinery design where the proximitor is mounted in a local junction box on the machine casing. This practice reduces cable runs, minimizes signal noise, and simplifies installation. The short cable also reduces the total system capacitance, preserving high-frequency response for vibration measurement.

Lowest Weight in the Series (0.15 kg) allows installation on lightweight brackets and small machinery without over-stressing mounting points. This is particularly important for Chinese-manufactured machines that may use thinner castings or aluminum brackets.

Metric M10×1 Thread with 4mm Unthreaded Length matches the thread standard used by the majority of Chinese machinery manufacturers (Shenyang Blower Works, Hangzhou Steam Turbine, Dongfang Electric, etc.). The short unthreaded length is ideal for thin mounting brackets (2mm to 5mm thickness), which are common in Chinese machinery designs.

Standard PVC Cable with Flame Retardant complies with Chinese fire safety standards (GB/T 18380) for equipment installed in power plants and petrochemical facilities. The cable does not propagate flame and self-extinguishes within 30 seconds after removal of the ignition source.

Chinese Language Markings on the probe body and cable include simplified Chinese characters for “probe tip” (探头尖端), “cable length” (电缆长度), and “thread size” (螺纹尺寸). This reduces installation errors by Chinese technicians who may not be fluent in English.

Full Interchangeability with International 3300 XL Probes means that a CN version probe can be replaced with a standard international probe (330104-04-10-05-01-00) without recalibration, and vice versa. This allows Chinese plants to keep a common spare parts inventory with their international counterparts.

Simplified Procurement for Chinese Projects because the CN version is stocked by local distributors in Shanghai, Tianjin, and Shenzhen. Lead times for the CN version are typically 1 to 2 weeks compared to 6 to 8 weeks for international versions that require import customs clearance.

Chinese Language Technical Support documentation including installation manual, calibration certificate, and material safety data sheet (MSDS) for the potting compound is provided in simplified Chinese. The documentation uses Chinese standard technical terms consistent with GB/T 6075 (mechanical vibration standards) and GB/T 19873 (condition monitoring standards).

Brand Information

The product is manufactured under the Bently Nevada brand. Bently Nevada has maintained a direct presence in China since the 1980s and is one of the most recognized machinery protection brands in the Chinese power generation, petrochemical, and steel industries. The brand is trusted by Chinese state-owned enterprises including Sinopec, CNPC, China Shenhua, and China Huaneng Group.

Product Series

The 330104-04-10-05-01-CN belongs to the 3300 XL 8mm Proximity Probe Series with a China-specific configuration. The 3300 XL series is the industry standard for non-contact vibration and position measurement worldwide, and the CN version is fully compatible with international 3300 XL proximitors and extension cables.

The series includes probes with various thread types, unthreaded lengths, cable lengths, and terminations. The CN version is offered in a subset of these configurations that are most popular in the Chinese market:

• Thread: Metric M10×1 (90% of Chinese market) or imperial 3/8-24 (10%)

• Unthreaded length: 4mm (most common), 8mm, or 18mm

• Cable length: 0.5m, 1.0m, 5.0m, or 9.0m

• Termination: Flying leads (01) or standard connector (02)

• Special specification: CN (China market) or blank (international)

All CN version probes are manufactured in the same facilities as international probes but undergo additional documentation and certification steps for the Chinese market. Electrical performance is identical to the corresponding international model numbers.

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