The Bently Nevada 330195-02-12-05-CN belongs to the 3300 XL series of reverse mount proximity probes, specifically designed for installations where space constraints prevent the use of standard straight probes. This reverse mount configuration routes the cable from the back of the probe, offering greater flexibility in machine casing designs.
Engineers choose this probe for its reliable eddy-current measurement of shaft vibration, thrust position, and eccentricity in turbines, compressors, and pumps. The 8 mm diameter sensing element uses a molded PPS tip that provides thicker coil encapsulation than earlier models, significantly improving durability against mechanical shock and abrasion.
This particular variant includes a 0.5-meter (1.6 feet) integral cable and carries Country Specific Approval (CN), ensuring compliance with local regulatory requirements. The 3/8-24 UNF thread fits standard mounting holes, while the reverse mount design simplifies cable routing in confined areas.
The 330195-02-12-05-CN operates with a nominal DC resistance of 7.45 ± 0.50 Ω from the center conductor to the outer conductor. This value ensures proper matching with Bently Nevada Proximitor systems for accurate signal transmission.
The probe tip uses PPS (polyphenylene sulfide), a high-performance engineering plastic that resists chemicals and high temperatures. The case is AISI 303 or 304 stainless steel, providing excellent corrosion resistance and mechanical strength. The 3/8-24 thread accepts a maximum engagement length of 0.563 inches.
For applications requiring extended temperature operation, the probe tip supports up to +218°C in the extended range option, while the standard range covers -52°C to +177°C. However, exposing the probe to temperatures below -34°C may cause premature failure of the pressure seal, so we recommend keeping operating temperatures above this threshold.
This reverse mount probe demonstrates excellent humidity resistance. When tested in 93% relative humidity per IEC standard 68-2-3 for up to 56 days, the Average Scale Factor (ASF) changes by less than 3%. This stability makes the 330195-02-12-05-CN suitable for humid environments like paper mills and marine installations.
The Viton® O-ring seals differential pressure between the probe tip and case. While Bently Nevada does not pressure-test probes before shipment, the seal design effectively prevents oil and moisture ingress during normal operation. If your application requires specific pressure testing, we recommend contacting the custom design department for special arrangements.
The probe's reverse mount configuration provides distinct advantages. For instance, it allows the cable to exit perpendicular to the mounting surface, reducing bending stress on the cable. Additionally, this design simplifies installation in bearing housings and gearboxes where internal clearance is limited.
Proper installation ensures reliable measurements from the 330195-02-12-05-CN. First, verify the mounting hole matches the 3/8-24 UNF thread specification. Thread engagement should not exceed 0.563 inches to avoid damaging the probe or the mounting surface.
When installing, position the probe so the tip faces the target surface with the correct gap per your Proximitor system specifications. The reverse mount design allows the cable to route away from the sensing area, which reduces the risk of cable damage from rotating components.
Avoid exposing the probe to temperatures below -34°C, as this may compromise the pressure seal. For high-temperature applications, consider the extended temperature range option. Always use genuine Bently Nevada extension cables and Proximitor systems to maintain measurement accuracy and safety certifications.
Your shipment of the Bently Nevada 330195-02-12-05-CN includes:
One 3300 XL 8 mm reverse mount probe (integral 0.5-meter cable)
Quick installation reference card
Protective shipping cap for the probe tip
Note: Certificates, calibration reports, and warranty documents are not included in this standard packaging. Please request them separately if needed.
All orders ship via Fedex, UPS, or DHL with tracking numbers provided upon dispatch.
Q1: What makes the reverse mount design different from standard probes?
A1: The reverse mount 330195-02-12-05-CN routes the cable from the back of the probe, allowing installation in tight spaces where standard straight probes cannot fit. This design simplifies cable management in confined machine casings.
Q2: Does this 0.5-meter probe require an extension cable?
A2: No. The 330195-02-12-05-CN has a total length of 0.5 meters, so it functions as a complete one-piece system without needing an extension cable.
Q3: What is the temperature limit for this probe?
A3: The standard operating range is -52°C to +177°C. However, exposing the probe to temperatures below -34°C may cause premature pressure seal failure. For higher temperatures up to +218°C, choose the extended temperature range option.
Q4: Does this probe carry hazardous area approvals?
A4: This specific variant carries Country Specific Approval (CN). For ATEX, CSA, or IECEx approvals, please select the corresponding option code when ordering.
Q5: What shipping methods do you offer?
A5: We ship all orders via Fedex, UPS, or DHL with full tracking. Express and economy options are available upon request.
| Brand Name | |
| Model No. | 330195-02-12-05-CN |
| Product Type | Reverse Mount Proximity Probe |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
