330101-00-12-05-02-05 is a Bently Nevada 3300 XL series standard eddy current probe with a total length of 0.5 meter (1.6 feet). This model builds on the base configuration (3/8-24 UNF threads, 0.0‑inch unthreaded length, 1.2‑inch case length, standard ClickLoc connector and standard cable) by adding CSA, ATEX, and IECEx hazardous area approvals, making it suitable for intrinsically safe (IS) installations in explosive atmospheres.
With its very short 0.5 m total length, this probe is specifically intended to be used with an 8.5‑meter hazardous area approved extension cable (e.g., 330130-085-00-05) to form a complete 9‑meter intrinsically safe system (0.5 m probe + 8.5 m extension cable = 9 m system). This configuration is ideal for long‑distance monitoring of large rotating machinery where the Proximitor Sensor is mounted in a safe area (e.g., a control room) while the probe is installed in Zone 0, Zone 1, or Zone 2 hazardous areas.
Model Breakdown: 330101-00-12-05-02-05 Configuration Details
Following Bently Nevada’s part number coding system (refer to datasheet Pages 13-14), the fields in this model number represent the following:
Field | Code | Parameter | Description |
Base Model | 330101
| 3300 XL 8 mm Probe, 3/8-24 UNF thread, without armor | Compatible with 3300 XL 8 mm and 3300 5 mm systems |
Unthreaded Length (A) | 00
| 0.0 inches | Distance from probe tip to start of thread; shortest configuration |
Overall Case Length (B) | 12
| 1.2 inches | Total threaded length (code 12 = 1.2 inches) |
Total Length Option (C) | 05
| 0.5 meter (1.6 ft) | Total probe cable length (including connector); shortest total length option |
Connector & Cable Option (D) | 02
| Miniature coaxial ClickLoc connector, standard cable | Standard FEP‑insulated cable, gold‑plated ClickLoc connector |
Agency Approval (E) | 05
| CSA, ATEX, IECEx Hazardous Area Approvals | Certified for intrinsically safe installations in explosive atmospheres |
Key Configuration Note: This model differs from 330101-00-12-05-02-00 only in the approval option (05 instead of 00). Its 0.5 m total length and 1.2‑inch case length are specifically designed for 9‑meter intrinsically safe systems and must be paired with an 8.5‑meter hazardous area approved extension cable. The probe meets ATEX, IECEx, and CSA intrinsic safety requirements for use in Zone 0, Zone 1, Zone 2, and Class I, II, III hazardous locations.
Hazardous Area Approvals & Conditions of Safe Use
Hazardous Area Certifications
330101-00-12-05-02-05 carries the following hazardous area approvals, suitable for installations in major industrial regions worldwide:
Certification | Type | Area Classification | Temperature Class |
ATEX / IECEx | Ex ia IIC T4/T5 Ga | Zone 0, 1, 2 | T5 @ Ta = -55°C to +40°C
T4 @ Ta = -55°C to +80°C |
cNRTLus | Class I, Zone 0, AEx/Ex ia IIC T4/T5 Ga | Class I, Groups A, B, C, D
Class II, Groups E, F, G
Class III | Same as above |
In addition, the probe also meets ATEX/IECEx dust ignition protection (Ex ia IIIC T90°C … T280°C Dc). Refer to the datasheet Page 12 temperature schedule for specific temperature classes based on ambient temperature.
Conditions of Safe Use (Intrinsically Safe Systems)
When used in an intrinsically safe system, the following conditions must be observed:
Barriers/Isolators: Must be installed with intrinsically safe zener barriers per Bently Nevada drawing 141092, or with galvanic isolators.
Entity Parameters (when connected to approved Proximitor Sensor):
Ui = -28V
Ii = 140 mA
Pi = 0.91 W
Ci = 47 nF
Li = 1460 μH
Installation Environment: The Proximitor Sensor must be installed in a non‑hazardous area or within an approved explosion‑proof enclosure.
System Integrity: The probe, extension cable, Proximitor Sensor, and any connector protectors must all carry the same hazardous area approval rating. Mixing non‑approved components will void the certification.
Important: This probe must be used with hazardous area approved extension cable (e.g., 330130-085-00-05) and Proximitor Sensor (e.g., 330180-90-05) to maintain a complete 9‑meter intrinsically safe system.
Application Scenarios & Selection Guide
330101-00-12-05-02-05 is suitable for the following typical applications:
Precise Total Length Matching for 9‑Meter IS Systems: This 0.5 m probe must be paired with an 8.5‑meter hazardous area approved extension cable (e.g., 330130-085-00-05) to form a complete 9‑meter IS system (0.5 m + 8.5 m = 9 m). Ideal for long‑distance monitoring where the Proximitor Sensor is mounted in a safe area (control room) and the probe is installed on equipment in a hazardous area.
Large Rotating Machinery Monitoring in Hazardous Areas: For shaft vibration, axial position, and Keyphasor measurements on compressors, steam turbines, generators, and pumps located in Zone 0/1/2 areas such as refineries, petrochemical plants, and natural gas facilities.
Longer Case Length Requirement: The 1.2‑inch case length (approx. 30.5 mm) is longer than the standard 0.8 inches, suitable for deeper threaded mounting holes or applications where the probe needs to be inserted further into the equipment in hazardous areas.
Suitable for IIC Gas Group: This probe is suitable for the most dangerous environments containing hydrogen, acetylene, carbon disulfide, and other IIC group gases.
Selection Notes:
Total Length Matching: Probe length + extension cable length = Proximitor Sensor total system length (5 m or 9 m). This 0.5 m probe must be used with an 8.5‑meter hazardous area approved extension cable to form a 9‑meter IS system. Do not pair it with a 4.0 m cable (that would create a 4.5 m system, which does not match standard Proximitor lengths).
System Accuracy: The 9‑meter IS system has a larger linear deviation (DSL) of < ±0.038 mm compared to ±0.025 mm for 5‑meter systems. For applications with extremely high accuracy requirements, consider using a 5‑meter IS system (e.g., 1.0 m probe + 4.0 m cable).
Temperature Class Selection: Choose T4 or T5 based on the ambient temperature. T5 (-55°C to +40°C) is for lower ambient temperatures; T4 (-55°C to +80°C) covers a wider range.
Thread Installation: 3/8-24 UNF threads. The mounting hole must match this thread. Thread engagement length should not exceed 0.563 inches to avoid installation difficulty or probe damage. Although this probe has a 1.2‑inch case length allowing longer engagement, care must still be taken not to exceed the limit.
Unthreaded Length: This model has 0.0‑inch unthreaded length. If your mounting hole has an internal shoulder or you need the probe tip to extend a certain distance, select a hazardous area approved model with a longer unthreaded length (e.g., code "04" = 0.4 inches).
Ambient Temperature: Standard probe is rated to +177°C. If the application exceeds this temperature, select an ETR high‑temperature hazardous area approved probe (330191/330192 series with approval option 05).
Armor Protection: If the cable may be subject to mechanical damage (crushing, abrasion), select an armored hazardous area approved probe (e.g., 330102-00-12-05-02-05).
Connector Protection: In hazardous areas, connector protectors (order separately, suitable for hazardous area use) are strongly recommended to prevent oil mist or moisture ingress and maintain intrinsic safety sealing integrity.
Mechanical Dimensions & Installation
Probe Tip Diameter: 8.0 mm (0.31 in)
Thread Specification: 3/8-24 UNF-2A; recommended lock nut torque: 11.2 N·m (100 in·lbf)
Overall Case Length: 1.2 in (30.5 mm)
Unthreaded Length: 0.0 in
Cable Outer Diameter: 3.68 mm (0.145 in) maximum
Connector Outer Diameter: 7.24 mm (0.285 in) maximum
Minimum Bend Radius: 25.4 mm (1.0 in)
Installation Drawing: Intrinsically safe system installation must strictly follow Bently Nevada drawing 141092, including barrier selection, grounding, and wiring practices.
Installation Tips: Before installation, inspect the mounting hole threads for cleanliness and proper depth. Use the recommended lock nut (part number 04301007) and tighten to the specified torque. Set the probe gap to the recommended -9 Vdc (approx. 1.27 mm), which can be monitored via the Proximitor Sensor output voltage. In hazardous areas, all operations must comply with relevant explosion protection standards (e.g., IEC 60079-14).
Related Products & Compatible Configurations
This probe is typically used with the following hazardous area approved products to form a 9‑meter IS system:
Companion Product | Recommended Model | Description |
Extension Cable | 330130-085-00-05 | 8.5 m standard hazardous area cable, forms 9 m IS system |
Proximitor Sensor | 330180-90-05 | 9 m system panel‑mount hazardous area Proximitor |
Lock Nut | 04301007 | 3/8-24 lock nut with safety wire holes (no approval required) |
Mounting Bracket | 137492-01 | Aluminum threaded mounting bracket, 3/8-24 thread (no approval required) |
Connector Protector | 40180-02 (or 40113-02) | Connector protector kit, recommended for hazardous areas |
For other configurations, refer to the following hazardous area approved probe options:
Model | Thread | Unthreaded Length | Case Length | Total Length | Armor | Approvals | Application |
330101-00-12-05-02-05 | 3/8-24 | 0.0" | 1.2" | 0.5 m | No | ATEX/IECEx | Current model, short probe for 9 m IS system |
330101-00-12-10-02-05 | 3/8-24 | 0.0" | 1.2" | 1.0 m | No | ATEX/IECEx | 5 m IS system, longer case |
330101-00-08-05-02-05 | 3/8-24 | 0.0" | 0.8" | 0.5 m | No | ATEX/IECEx | 9 m IS system, short case |
330102-00-12-05-02-05 | 3/8-24 | 0.0" | 1.2" | 0.5 m | Yes | ATEX/IECEx | 9 m IS system with armored mechanical protection |
330103-00-??-05-02-05 | M10×1 | As required | As required | 0.5 m | No | ATEX/IECEx | Metric thread 9 m IS system probe |
Matching Extension Cable: This probe must be used with an 8.5‑meter hazardous area approved extension cable (e.g., 330130-085-00-05) to form a complete 9‑meter IS system.
Inquiry & Technical Support
330101-00-12-05-02-05 is a commonly used hazardous area model in the Bently Nevada product line, specifically designed for long‑distance monitoring in hazardous areas. For pricing, lead time, or technical drawings, please contact us:
Online Inquiry: Click the “Request a Quote” button and provide the model number for a prompt response.
Technical Support: If you need assistance verifying whether this configuration meets your hazardous area 9‑meter system total length matching and approval requirements, please provide the hazardous area classification (Zone/Division), gas group, temperature class, and site ambient temperature, and we will help confirm certification parameters and system integrity.
