Technical Specifications of Bently Nevada 330881-16-04-138-03-02

Measurement & Performance Data

The Bently Nevada 330881-16-04-138-03-02 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.

Temperature Classification Schedule

This PROXPAC XL transducer includes specific temperature ratings for different EPL levels. For EPL Ga and Gc, the ratings are T1 (-55°C to +232°C), T2 (-55°C to +177°C), T3 (-55°C to +120°C), T4 (-55°C to +80°C), and T5 (-55°C to +40°C). For EPL Dc, the ratings are T280°C at Ta -55°C to +232°C, T225°C at Ta -55°C to +177°C, T170°C at Ta -55°C to +120°C, T130°C at Ta -55°C to +80°C, T105°C at Ta -55°C to +100°C, and T90°C at Ta -55°C to +40°C.

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 & Configuration Notes

The standoff adapter (B Dimension) equals 40 mm. The probe penetration (C Dimension) equals 138 mm. Probe and approvals option 16 means this is a 3300 XL 8mm probe without formal approvals. This version includes one M20 fitting and two plugs. Mounting thread is 3/4-14 NPT.

Installation Guide for PROXPAC XL Transducer

Follow these steps to install the Bently Nevada 330881-16-04-138-03-02 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 40 mm standoff adapter positions the probe correctly for various mounting depths.

• Match Temperature Class: Select the correct temperature classification for your operating environment.

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

Packaging List

The original package for Bently Nevada 330881-16-04-138-03-02 includes:

• 1 x PROXPAC XL Proximity Transducer (3300 XL 8mm probe without approvals)

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

• 1 x Gold-plated brass ClickLoc connector

• 1 x M20 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 330881-16-04-138-03-02?
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: What does the 16 in the product number mean for this model?
A2: The 16 indicates a 3300 XL 8mm probe without formal approvals. This suits applications where hazardous area certification is not required.

Q3: What are the standoff and penetration dimensions for the 330881-16-04-138-03-02?
A3: The standoff adapter (B Dimension) is 40 mm. The probe penetration (C Dimension) is 138 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: Does this PROXPAC XL model include temperature classifications?
A5: Yes, it includes a full temperature schedule for EPL Ga, Gc, and Dc environments. Select the correct T-class based on your ambient temperature range.