Technical Specifications of Bently Nevada 330880-28-40-058-01-02

Measurement & Performance Data

The Bently Nevada 330880-28-40-058-01-02 delivers a linear range of 2 mm (80 mils). This range starts at 0.25 mm from the target. The incremental scale factor (ISF) measures 7.87 V/mm ±5%. Its frequency response spans 0 to 10 kHz with -3 dB. The deviation from best fit straight line (DSL) stays below ±0.025 mm. Minimum target size for this transducer is 15.2 mm diameter.

Environmental Limits & Protection

The probe tip operates from -51°C to +177°C. Exposure below -34°C may damage the pressure seal. The housing holds an IP66 rating verified by BASEEFA. It survives two separate 4 Joule impacts at -39°C and 115°C. CSA also confirmed a 7 Joule impact at room temperature.

Electrical Specifications

This model needs -17.5 Vdc to -26 Vdc power without barriers. With barriers, use -23 Vdc to -26 Vdc. Power supply sensitivity stays under 2 mV change per volt change. Output resistance is 50 Ω. Field wiring uses 0.2 to 1.5 mm² (16 to 24 AWG) 3-conductor triax cable.

Mechanical Construction & Materials

The probe case uses AISI 304 stainless steel. Probe tip material is Polyphenylene Sulfide (PPS). Housing uses UV-resistant, glass-reinforced PPS with conductive fibers. The probe tensile strength reaches 330 N (75 lb) between cable and case. Recommended torque for the retaining nut is 29.5 N·m.

Dimensions & Fittings Configuration

The standoff adapter (B Dimension) equals 4 inches (approximately 102 mm). The probe penetration (C Dimension) equals 58 mm. This version includes one 3/4-14 NPT fitting and two plugs. Mounting thread is 3/4-14 NPT as required with the standoff adapter.

Note: The B Dimension uses inches (4 inches) instead of millimeters. This differs from other models in the PROXPAC XL family.

Installation Guide for PROXPAC XL Transducer

Follow these steps to install the Bently Nevada 330880-28-40-058-01-02 correctly.

• Set the Gap: Use the recommended gap setting of 1.27 mm (50 mils).

• Apply Torque: Tighten the retaining nut to 29.5 N·m. Tighten the probe sleeve locknut to 39.3 N·m.

• Check Shaft Diameter: Ensure the shaft diameter is at least 50.8 mm minimum.

• Wire Correctly: Use shielded triax cable with tinned field wiring. Maximum field wiring length is 305 metres.

• Verify Standoff Distance: The 4-inch standoff adapter provides extra clearance for deep mounting holes.

• Avoid Low Temperatures: Never expose the probe below -34°C to prevent seal failure.

Packaging List

The original package for Bently Nevada 330880-28-40-058-01-02 includes:

• 1 x PROXPAC XL Proximity Transducer (3300 XL 8mm probe with multiple approvals)

• 1 x 1-metre probe cable (75 Ω triaxial, FEP insulated)

• 1 x Gold-plated brass ClickLoc connector

• 1 x 3/4-14 NPT fitting

• 2 x Plugs

• 1 x Mounting thread (3/4-14 NPT)

• 1 x Outer sleeve and retaining screws (AISI 303 stainless steel)

• 1 x Grounding liner and retaining plate (AISI 304 stainless steel)

• 1 x Sleeve O-ring (Neoprene)

• 1 x Vibration isolation material (Extra Soft Cellular Silicone)

Frequently Asked Questions (FAQ)

Q1: What is the linear range of the Bently Nevada 330880-28-40-058-01-02?
A1: Its linear range is 2 mm (80 mils) from 0.25 mm to 2.3 mm. This range produces approximately -1 Vdc to -17 Vdc output.

Q2: Why does the B Dimension show 4 inches instead of millimeters?
A2: This model uses inch units for the standoff adapter. 40 in the product number means 4 inches (approximately 102 mm). Other models use metric units.

Q3: What are the standoff and penetration dimensions for the 330880-28-40-058-01-02?
A3: The standoff adapter (B Dimension) is 4 inches. The probe penetration (C Dimension) is 58 mm. Total insertion depth combines both values.

Q4: What is the maximum field wiring length for this transducer?
A4: The maximum length is 305 metres (1000 feet) between the Proximitor Sensor and the monitor. Use 3-conductor shielded triax cable.

Q5: Is the housing impact-resistant for this PROXPAC XL model?
A5: Yes, BASEEFA certified it for two separate 4 Joule impacts at -39°C and 115°C. CSA verified a 7 Joule impact at room temperature.