Bently Nevada 330880-28-00-035-00-02 PROXPAC XL Proximity Transducer

Product Introduction

The 330880-28-00-035-00-02 from Bently Nevada is a PROXPAC XL proximity transducer. This all-in-one device replaces separate probes, cables, and Proximitors. You get a complete measurement solution in a single housing.

Additionally, this model includes a 3300 XL 8 mm probe with multiple agency approvals. The probe penetration (C dimension) is 35 mm. Mounting threads are 3/4-14 NPT. No standoff adapter is included (B dimension = 0.0 inches).

Therefore, the Bently Nevada 330880-28-00-035-00-02 simplifies installation. You only need to mount the housing and connect field wiring. The IP66 rating verifies excellent environmental protection.

Furthermore, this transducer operates from -51°C to +177°C. It requires a -17.5 Vdc to -26 Vdc power supply. The linear range covers 2 mm (80 mils) with a 7.87 V/mm scale factor.

Technical Specifications

Probe Type: 3300 XL 8 mm probe with multiple approvals
Standoff Adapter (B): 0.0 inches (none)
Probe Penetration (C): 35 mm
Fittings: None (includes two plugs and two washers)
Mounting Thread: 3/4-14 NPT
Linear Range: 2 mm (80 mils) from 0.25 mm to 2.3 mm
Incremental Scale Factor: 7.87 V/mm (200 mV/mil) ±5%
Recommended Gap: 1.27 mm (50 mils)
Frequency Response: 0 to 10 kHz (+0, -3 dB)

Moreover, the probe tip uses polyphenylene sulfide (PPS) material. The probe case is AISI 304 stainless steel. A 1-meter triaxial cable with FEP insulation connects the probe to the housing.

Specifically, the gold-plated ClickLoc connector ensures secure attachment. Probe tensile strength reaches 330 N (75 lb) maximum between cable and case.

Mechanical & Housing Specifications

Housing Material: UV-resistant, glass-reinforced PPS with conductive fibers
Sleeve Material: AISI 304 stainless steel
Retaining Screws: AISI 303 stainless steel
Sleeve O-Ring: Neoprene
Vibration Isolation: Extra soft cellular silicone
Housing Rating: IP66 (verified by BASEEFA report T07/0709)

For instance, the housing withstands 912 N (205 lbf) of static load. Impact strength includes two separate 4 Joule strikes at -39°C and 115°C. CSA also verified 7 Joule impact resistance at room temperature.

Besides, the outer sleeve and retaining chain are both AISI 304 stainless steel. The grounding liner and retaining plate share the same material. This construction resists corrosion in most industrial settings.

Environmental Limits

Probe Operating Temperature: -51°C to +177°C (-60°F to +350°F)
Warning: Exposure below -34°C (-29°F) may cause premature pressure seal failure
Power Requirement: -17.5 Vdc to -26 Vdc without barriers, -23 Vdc to -26 Vdc with barriers
Supply Sensitivity: Less than 2 mV output change per volt of input change
Output Resistance: 50 Ω
Field Wiring: 0.2 to 1.5 mm² (16 to 24 AWG), 3-conductor shielded triax recommended
Maximum Field Wiring Length: 305 meters (1,000 feet)

However, operating at voltages more positive than -23.5 Vdc reduces linear range. Always verify your power supply meets these requirements.

Meanwhile, the minimum target size is 15.2 mm diameter (flat target). Minimum shaft diameter is 50.8 mm (2.0 inches).

Installation Guidelines

First, prepare a 3/4-14 NPT mounting hole. Clean the threads thoroughly. Apply thread sealant if required by your process.

Next, mount the PROXPAC XL housing securely. Use the retaining nut with 29.5 N·m (260 in·lb) torque. The probe sleeve locknut requires 39.3 N·m (350 in·lb).

Then, connect your field wiring. Use 3-conductor shielded triax cable for best noise immunity. Strip 0.2 to 1.5 mm² conductors and insert them into the terminal block.

Finally, set the initial gap to 1.27 mm (50 mils). Apply power and verify the output voltage. Adjust the probe position until you reach the recommended DC voltage.

For instance, the linear range produces approximately -1 Vdc at 0.25 mm gap and -17 Vdc at 2.3 mm gap. Your 1.27 mm setting should yield roughly -9 Vdc.

Therefore, always verify the gap with a calibrated target simulator or actual shaft position. Incorrect gap settings cause measurement errors.

Packaging List

• Bently Nevada 330880-28-00-035-00-02 PROXPAC XL transducer (complete assembly)

• 3300 XL 8 mm probe with 1-meter cable (pre-attached)

• Two plugs and two washers (no additional fittings)

• Installation guide (printed)

Note: Calibration certificates and warranty documents are not included in the box. They ship separately upon request.

Shipping Information

All orders ship via FedEx, UPS, or DHL. Tracking numbers are provided within 24 hours. Delivery typically takes 3–7 business days. Buyers pay any applicable import duties or taxes.

Frequently Asked Questions (FAQ)

1. Does the 330880-28-00-035-00-02 include a Proximitor?
No, the PROXPAC XL integrates the probe and signal conditioning into one housing. You do not need a separate Proximitor sensor.

2. Can I use this transducer with a longer probe cable?
No, the probe cable is fixed at 1 meter. You cannot extend it. The field wiring side can go up to 305 meters.

3. What approvals does “multiple approvals” include?
Option code 28 typically includes ATEX, IECEx, and CSA. Contact our team for the exact certification list for your batch.

4. How do I clean the Bently Nevada 330880-28-00-035-00-02 housing?
Use a soft cloth with mild detergent. Avoid high-pressure water jets despite the IP66 rating. Do not use abrasive cleaners.

5. What happens if the temperature goes below -34°C?
The probe’s pressure seal may fail prematurely. Keep the probe above -34°C during operation. The housing itself can handle lower temperatures.