Description
330881-28-07-155-06-02: This metric PROXPAC XL proximity transducer configuration features a 3300 XL 8 mm probe with multiple approvals (Option 28), a 70 mm standoff adapter (Option 07), 155 mm of probe penetration depth (Option 155), a specialized fittings kit (Option 06), and a 3/4-14 NPT mounting thread (Option 02).
In contrast to non-approved configurations or variants lacking a standoff adapter, this assembly integrates a robust, certified monitoring chain inside a durable Polyphenylene Sulfide (PPS) housing. The PROXPAC XL combines the probe and Proximitor sensor into a single integrated system, reducing external field wiring requirements by connecting directly to Bently Nevada monitors.
Features
- Option 28 integrates a 3300 XL 8 mm probe certified with Multiple Approvals for hazardous locations.
- Option 07 specifies a 70 mm metric standoff adapter to position the assembly clear of obstruction.
- Option 155 provides 155 mm of probe penetration length into the machine case.
- Option 06 supplies a fittings kit containing one 3/4-14 NPT fitting, one 3/4-14 NPT to 1 1/2-14 NPT stainless steel reducer, and two plugs.
- Option 02 establishes a 3/4-14 NPT mounting thread for the outer sleeve assembly.
- Glass and conductive fiber-reinforced Polyphenylene Sulfide (PPS) thermoplastic housing construction provides IP66 ingress protection and static charge dissipation.
- Direct-connect design integrates the Proximitor sensor directly into the housing cover, eliminating the need for an intermediate extension cable.
Applications
Typical applications include shaft vibration and axial position measurement on industrial rotating machinery, steam and gas turbines, centrifugal compressors, and large pumps where reduction of external wiring and junction boxes is required.
Ordering Information
| Option / Parameter |
Code on This SKU |
Description / Specification |
| Orderable Part Number |
330881-28-07-155-06-02 |
PROXPAC XL Proximity Transducer, Metric |
| A - Probe and Approvals Option |
28 |
3300 XL 8 mm probe with Multiple Approvals |
| B - Standoff Adapter Option |
07 |
70 mm standoff length (Option B) |
| C - Probe Penetration Option |
155 |
155 mm penetration length (Option C) |
| D - Fittings Option |
06 |
One 3/4-14 NPT fitting, one 3/4-14 NPT to 1 1/2-14 NPT SST reducer, and two plugs |
| E - Mounting Thread Option |
02 |
3/4-14 NPT (required if ordering Standoff Adapter Option) |
Technical Specifications
| Manufacturer |
Bently Nevada (Baker Hughes) |
| Part Number/Model |
330881-28-07-155-06-02 |
| Proximitor Sensor Input |
3300 XL 8 mm Proximity Probe with a 1-metre cable length installed in the probe sleeve |
| Power Requirements |
Requires -17.5 Vdc to -26 Vdc without barriers at 12 mA maximum |
| Linear Range |
2.0 mm (80 mils) |
| Recommended Gap |
1.27 mm (50 mils) |
| System Output |
7.87 V/mm (200 mV/mil) |
| Frequency Response |
0 to 10 kHz: +0, -3 dB with up to 305 metres (1000 feet) of field wiring |
| Minimum Target Size |
15.2 mm (0.6 in) diameter (flat target) |
| Shaft Diameter (Minimum) |
50.8 mm (2.0 in) |
| Probe Tip Material |
Polyphenylene Sulfide (PPS) |
| Probe Case Material |
AISI 304 stainless steel |
| Probe Cable |
1-metre length, 75 ohm triaxial, fluoroethylene propylene (FEP) insulated |
| Probe Connector |
Gold-plated brass ClickLoc connector |
| Housing Material |
Ultraviolet (UV) resistant, glass-reinforced polyphenylene sulfide (PPS) thermoplastic containing conductive fibers |
| Sleeve Material & Retaining Chain |
AISI 304 stainless steel |
| Outer Sleeve & Retaining Screws |
AISI 303 stainless steel |
| Sleeve O-Ring Material |
Neoprene |
| Grounding Liner & Retaining Plate |
AISI 304 stainless steel |
| Vibration Isolation Material |
Extra Soft Cellular Silicone |
| Lid Label Material |
Gloss Radiant White Polyester |
| Housing Rating |
IP66 / Type 4X verified |
| Probe Operating Temperature |
-52 degC to +177 degC (-62 degF to +351 degF) |
| Probe Housing & Proximitor Operating Temperature |
-52 degC to +100 degC (-62 degF to +212 degF) |
| Relative Humidity |
100% condensing, non-submersible when connectors are protected |
Installation Guidelines
Install the outer sleeve assembly into the machine case using thread sealant on the mounting thread (3/4-14 NPT). Adjust the probe gap within the housing using the probe sleeve locknut (torque to 39.3 N-m / 350 in-lb). Fasten the lid cover retaining nuts to 29.5 N-m (260 in-lb). Take standard industrial precautions to prevent external moisture from travelling through the conduit directly into the housing.
Compliance and Certifications
CE compliant. BASEEFA IP66 housing rating. Multiple Approvals package option includes certifications for hazardous locations (CSA, ATEX, IECEx where applicable).