The Bently Nevada 330876-02-50-01-05 belongs to the 3300 XL 50 mm Proximity Probe family. This probe handles the most demanding steam turbine DE (driver end) environments. It maintains accurate measurements while exposed to high temperatures up to 200°C (392°F). The device also survives intermittent spikes up to 250°C (482°F) for short periods.
This probe includes both front and rear seals for superior moisture protection. The high-temperature FluidLoc cable comes standard on all 50 mm probes. Together, these features prevent steam or moisture from entering the probe tip.
Special high-temperature ClickLoc connectors are also standard on the probe and extension cable. Each probe and cable includes connector protectors and a disposable installation tool. This tool keeps connectors free from contamination during setup.
The ClickLoc connector on the probe lead has a removable collar. This collar helps you route the cable through tight clearances inside machinery casings.
The 330876-02-50-01-05 follows a clear suffix structure:
| Suffix | Code | Meaning |
|---|---|---|
| Probe case type | 02 | M14x1.5 thread |
| Total length | 50 | 5.0 metres (16.4 feet) |
| Armor option | 01 | High temperature FluidLoc cable with armor |
| Agency approval | 05 | Multiple approvals |
Important Note: Five meter probes are designed exclusively for use with the five meter Proximitor Sensor only. Do not pair this probe with standard extension cables.
Probe Case Thread: The unit uses M14x1.5 metric threads. Maximum thread engagement length is 21 mm.
Probe Tip Material: The tip is made from Polyphenylene Sulfide (PPS). This material offers excellent heat and chemical resistance.
Probe Case Material: The case uses AISI 304 stainless steel (SST). This provides good corrosion resistance for harsh industrial environments.
Probe Cable: The cable is 75 Ω triaxial with PFA insulation. The FluidLoc design prevents fluid ingress. Total probe length is 5.0 metres with stainless steel armor covering.
DC Resistance: From center to coaxial conductor, resistance measures 7.6 ± 0.8 Ω at 5.0 metre length.
Continuous Operating Range: The probe works reliably from -35°C to +200°C (-31°F to +392°F).
Short-Term Tolerance: The device withstands +250°C (+482°F) for less than 24 hours. This covers temporary overload or steam purge events.
Both operating and storage temperatures follow the same ranges.
The -01 armor option adds a stainless steel armor layer over the high-temperature FluidLoc cable. This armor provides mechanical protection against crushing, abrasion, and impact damage. It is especially valuable in turbine casings where cables may contact sharp edges or moving parts.
The overall case diameter is 1.99 inches for both straight exit and side exit versions. The 330876-02-50-01-05 is a straight exit probe with M14x1.5 threads. A locknut with predrilled safety wire holes comes included.
This 5.0 meter probe has a unique design requirement. It must pair with a five meter Proximitor Sensor only. Standard Proximitor models for 1.0 or 9.0 meter probes will not work correctly. Always verify your Proximitor sensor length matches this probe.
The Agency Approval Option 05 provides multiple certifications for global use. These include ATEX, CSA, and other regional standards for hazardous areas. This makes the 330876-02-50-01-05 suitable for refineries, chemical plants, and other explosive atmospheres.
First, clean the mounting hole threads thoroughly before installation. Use the included locknut with safety wire for secure mounting. Next, thread the 330876-02-50-01-05 into the machine casing until the probe tip reaches the correct gap.
Then, connect the probe cable directly to the five meter Proximitor Sensor. Do not use extension cables with this 5.0 meter probe. Always use the disposable connector protector tool during connection. This prevents contamination from affecting signal quality.
After installation, gap the probe between 0.5 and 1.75 mm (20 to 55 mils) from the target surface. The armored cable withstands rough handling better than non-armored versions.
Additionally, avoid bending the armored cable beyond its minimum radius. Use the removable collar on the ClickLoc connector when routing through tight spaces.
One Bently Nevada 330876-02-50-01-05 3300 XL 50 mm Proximity Probe
High-temperature FluidLoc cable with stainless steel armor (5.0 metres)
ClickLoc connector with removable collar
Connector protector and disposable installation tool
Locknut with predrilled safety wire holes
1. What is the advantage of the armored cable on this probe?
The -01 armor option protects against crushing, abrasion, and impact damage. This is critical for turbine installations where cables face mechanical hazards.
2. Can I use the 330876-02-50-01-05 with a standard extension cable?
No. This 5.0 meter probe works exclusively with the five meter Proximitor Sensor only. Extension cables are not supported.
3. What approvals does the -05 suffix provide?
The multiple approvals option includes ATEX, CSA, and other hazardous area certifications. Use this version for explosive atmospheres.
4. How does the armored version differ in weight from non-armored?
The 330876-02-50-01-05 weighs approximately 1.10 kg gross. The non-armored version is lighter at 0.95 kg due to the missing armor layer.
5. What shipping methods do you offer?
We ship via FedEx, UPS, or DHL. Each probe ships in original factory packaging to ensure safe delivery.
| Brand Name | Bently Nevada |
| Model No. | 330876-02-50-01-05 |
| Product Type | Proximity Probe |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
