What Is SCADA? Supervisory Control Without Replacing the PLC
SCADA sits above PLCs and RTUs: it acquires field data, alarms operators, and issues supervisory commands across plants and remote assets—without replacing local deterministic control.

Designed for direct mounting on heavy rotating machinery cases, the Bently Nevada 330880-28-30-37-01-02 integrated PROXPAC XL assembly houses a high-precision proximity probe within a rugged, weather-resistant enclosure. This specific hardware configuration integrates a 3300 XL 8 mm proximity probe designed with multiple hazardous area approvals to provide continuous, non-contact shaft vibration, position, and speed measurements in demanding industrial settings. By combining the probe, standoff adapter, and conduit connection into a single modular unit, this assembly simplifies field deployment and protects sensitive sensor connections from environmental degradation.
| Parameter / Feature | Specification Value |
|---|---|
| Manufacturer | Bently Nevada |
| Model Code | 330880-28-30-37-01-02 |
| Product Series | PROXPAC XL |
| Probe & Approvals Option | 3300 XL 8 mm probe with multiple approvals (Option 28) |
| Standoff Adapter Option (B Dimension) | 3.0 inches (76 mm) (Option 30) |
| Probe Penetration Option (C Dimension) | 3.7 inches (94 mm) (Option 37) |
| Fittings Option | One 3/4-14 NPT fitting, two plugs (Option 01) |
| Mounting Thread Option | 3/4-14 NPT (Option 02) |
| Net Weight | 1.44 kg (3.17 lbs) |
| Shipping Weight (Calculated) | 3.00 kg (6.61 lbs) |
| Country of Origin | United States (USA) |
The PROXPAC XL series combines the probe and physical protective junction box into a single mechanical structure. This model is engineered to interface directly with matching 3300 XL Proximitor Sensors. Ensure that the total system electrical length (typically 5.0 meters or 9.0 meters) is matched across the probe, extension cable, and Proximitor to maintain calibration integrity (normally 200 mV/mil or 7.87 V/mm).
Incorrect selection of the B (standoff) and C (penetration) dimensions can result in the probe tip physically impacting the target shaft or being recessed too far inside the machine casing to achieve an active linear range. Engineers must calculate the total casing wall thickness, including gasket tolerances, and verify that the 3.7-inch probe penetration depth aligns correctly with the target's mechanical travel envelope under all thermal operating conditions.
When routing coaxial lines through the 3/4-14 NPT conduit fitting, do not exceed the minimum bend radius of the miniature coaxial cable. Avoid using harsh mechanical tools to tighten the internal gold-plated ClickLoc connectors, as over-tightening can deform the physical contact pins and lead to signal attenuation or intermittent calibration faults.
CRITICAL WARNING: De-energize and lock out the target machinery before installing or adjusting the proximity transducer assembly. Verify that the ambient atmosphere is classified as non-hazardous before opening the housing cover or adjusting the mechanical standoff settings while machinery is active.
Verify that the 3/4-14 NPT mounting threads on both the machine case and the PROXPAC adapter are clean, burr-free, and treated with compatible thread sealant.
Thread the standoff adapter into the machinery casing, tightening to the specified torque limit to prevent loose mechanical oscillation during operation.
Use a calibrated digital multimeter to monitor the DC gap voltage at the Proximitor Sensor terminals while carefully adjusting the probe position until the target mechanical midpoint (typically -10.0 Vdc) is reached.
Tighten the physical locknut, plug any unused conduit openings with the supplied NPT plugs, and secure the weatherproof cover to complete the installation.
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| Country of origin |
United States
|