330101-00-08-10-02-05 is a Bently Nevada 3300 XL series standard eddy current probe with a total length of 1.0 meter (3.3 feet). This model builds on the base configuration (3/8-24 UNF threads, 0.0‑inch unthreaded length, 0.8‑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.
This probe is typically used with a 3300 XL hazardous area approved extension cable (e.g., 330130-040-00-05) and a 3300 XL hazardous area approved Proximitor Sensor (e.g., 330180-50-05) to form a complete 5‑meter IS system (1.0 m probe + 4.0 m extension cable = 5 m system). Its 1.0 m total length is ideal for applications where the Proximitor Sensor is mounted in a safe area or an approved enclosure, while the probe is installed in Zone 0, Zone 1, or Zone 2 hazardous areas.
Model Breakdown: 330101-00-08-10-02-05 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) | 08
| 0.8 inches | Total threaded length; standard short case |
Total Length Option (C) | 10
| 1.0 meter (3.3 ft) | Total probe cable length (including connector) |
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 330101-00-08-10-02-00 only in the approval option (05 instead of 00). It is specifically designed for hazardous areas, meeting 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
330101-00-08-10-02-05 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., 330130-040-00-05) and Proximitor Sensor (e.g., 330180-50-05) to maintain a complete intrinsically safe system.
Application Scenarios & Selection Guide
330101-00-08-10-02-05 is suitable for the following typical applications:
Standard 5‑Meter IS System Configuration: Paired with a 4.0 m hazardous area approved extension cable (e.g., 330130-040-00-05) and a 5 m hazardous area approved Proximitor Sensor (e.g., 330180-50-05) to form a complete 5‑meter IS monitoring system, ideal when the Proximitor Sensor is mounted in a safe area and the probe is installed in a hazardous area.
Radial Vibration Monitoring in Hazardous Areas: For shaft vibration measurement on compressors, steam turbines, generators, and pumps located in Zone 0/1/2 areas such as refineries, petrochemical plants, and natural gas facilities.
Axial Position (Thrust) Monitoring in Hazardous Areas: Can be used to measure rotor axial position and monitor thrust bearing wear, meeting API 670 requirements for position monitoring.
Keyphasor / Speed Measurement in Hazardous Areas: Can serve as a Keyphasor probe to provide speed reference signals for overspeed protection systems (refer to relevant application notes).
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 1.0 m probe must be used with a 4.0 m hazardous area approved extension cable to form a 5‑meter IS system.
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. Thread engagement length should not exceed 0.563 inches to avoid installation difficulty or probe damage.
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 model with a longer unthreaded length.
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., 330102-00-08-10-02-05).
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: 0.8 in (20.3 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:
Companion Product | Recommended Model | Description |
Extension Cable | 330130-040-00-05 | 4.0 m standard hazardous area cable, forms 5 m IS system |
Proximitor Sensor | 330180-50-05 | 5 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 |
330101-00-08-10-02-05 | 3/8-24 | 0.0" | 0.8" | 1.0 m | No | ATEX/IECEx | Current model, basic hazardous area configuration |
330101-00-12-10-02-05 | 3/8-24 | 1.2" | 0.8" | 1.0 m | No | ATEX/IECEx | Hazardous area, longer unthreaded length required |
330101-00-08-05-02-05 | 3/8-24 | 0.0" | 0.8" | 0.5 m | No | ATEX/IECEx | Very short total length, pairs with 8.5 m cable for 9 m IS system |
330102-00-08-10-02-05 | 3/8-24 | 0.0" | 0.8" | 1.0 m | Yes | ATEX/IECEx | Hazardous area with armored mechanical protection |
330103-00-??-10-02-05 | M10×1 | As required | As required | 1.0 m | No | ATEX/IECEx | Metric thread hazardous area probe |
Matching Extension Cable: This probe must be used with a 4.0 m hazardous area approved extension cable (e.g., 330130-040-00-05) to form a complete 5‑meter IS system.
Inquiry & Technical Support
330101-00-08-10-02-05 is a commonly stocked hazardous area model in the Bently Nevada product line. 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 installation 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.
