Technical Specifications of Bently Nevada 330881-28-04-180-06-02

Measurement & Performance

The Bently Nevada 330881-28-04-180-06-02 provides a linear range of 2 mm (80 mils). This range starts at 0.25 mm from the target. The incremental scale factor (ISF) is 7.87 V/mm ±5%. Its frequency response goes from 0 to 10 kHz with -3 dB. The deviation from best fit straight line (DSL) is less than ±0.025 mm. Minimum target size for this transducer is 15.2 mm diameter.

Environmental Tolerance

The probe tip operates from -51°C to +177°C. Note that temperatures below -34°C may harm the pressure seal. The housing holds an IP66 rating verified by BASEEFA. It withstands 4 Joule impacts at -39°C and 115°C. CSA also verified a 7 Joule impact at room temperature.

Electrical & Power Data

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

Mechanical Strength & 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.

Installation Guide for PROXPAC XL Transducer

Follow these steps to install the Bently Nevada 330881-28-04-180-06-02 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.

• Avoid Low Temperatures: Do not expose the probe below -34°C to prevent seal failure.

Packaging List

The original package for Bently Nevada 330881-28-04-180-06-02 includes:

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

• 1 x 3/4-14 NPT fitting

• 1 x 3/4-14 NPT to 1/2-14 NPT SST reducer

• 2 x Plugs

• 1 x Mounting thread (3/4-14 NPT)

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

• 1 x Gold-plated brass ClickLoc connector

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

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

Frequently Asked Questions (FAQ)

Q1: What is the linear range of the Bently Nevada 330881-28-04-180-06-02?
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: Can I use this probe at high temperatures?
A2: Yes, the probe operates from -51°C to +177°C. However, avoid temperatures below -34°C to protect the pressure seal.

Q3: What is the maximum field wiring length for this transducer?
A3: The maximum length is 305 metres (1000 feet) between the Proximitor Sensor and the monitor. Use 3-conductor shielded triax cable.

Q4: What target size does the 330881-28-04-180-06-02 require?
A4: The minimum target size is 15.2 mm (0.6 inches) diameter for a flat target. The minimum shaft diameter is 50.8 mm.

Q5: Is the housing impact-resistant?
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.