Bently Nevada 177314-01 TK-3g Air Driven Proximity System Test Kit

Description

Engineered for high-reliability field verification and calibration of proximity transducer systems, the Bently Nevada 177314-01 serves as an air-driven mechanical simulator that replicates static and dynamic shaft motion. This calibration instrument utilizes a compressed air supply to drive its internal motor, making it an intrinsically safer choice for hazardous locations where electrical power is restricted or prohibited. Outfitted with an English scale micrometer calibrated in mils, the unit enables site engineers to accurately plot proximity probe calibration curves (voltage versus gap) and verify the electrical performance of vibration monitoring loops before commissioning or after maintenance shutdowns.

Features

• Intrinsically Safe Pneumatic Drive: Operates strictly on clean, dry compressed air up to 90 psi, eliminating electrical ignition risks in volatile industrial environments.
• Precise English Calibration: Features a built-in spindle micrometer option calibrated in English units (mils) for linear displacement testing.
• Variable Dynamic Simulation: Delivers mechanical spindle speeds from 0 up to 5000 cpm for verifying vibration transmitter frequency response and system thresholds.
• Ruggedized Enclosure: Housed in a durable carrying case designed to meet IP54 environmental standards when fully closed, protecting internal mechanics from dust and moisture ingress.
• Versatile Probe Compatibility: Accommodates standard Bently Nevada proximity probe diameters using standard holding fixtures.

Applications

• Field verification of Bently Nevada 3300 XL and legacy proximity transducer systems.
• Loop checks and calibration of Turbine Supervisory Instrumentation (TSI) in power generation facilities.
• Hazardous-area vibration monitor testing in oil and gas refineries and petrochemical processing plants.
• Periodic plant maintenance shutdown checks of displacement, thrust position, and speed measurement chains.

Technical Specifications

Connections and Interfaces

Empirical Engineering Insights

Alternative Models & Compatibility

The 177314-01 TK-3g pneumatic model is the direct operational alternative to the electrically driven TK-3e model. While the TK-3e requires local AC voltage (which poses electrical safety concerns in hazardous areas), the 177314-01 runs entirely on pressurized air. Both systems use identical physical adapters for holding Bently Nevada 3300 XL and 7200 series proximity probes. Ensure that you match your plant's standard calibration procedures—this unit uses English (mils) measurement increments; if your site works in metric dimensions, the metric variant of the TK-3g must be selected instead.

Application Pitfalls & Engineering Notes

A major field issue encountered with pneumatic calibrators is air supply contamination. Moisture, oil, or particulates in the supply air line will degrade the internal pneumatic motor over time, leading to erratic rotational speeds or premature spindle seizure. Always install an inline, 5-micron particulate and moisture filter regulator before connecting the air supply to the unit. Furthermore, exceeding the 90 psi threshold can cause severe overspeed of the dynamic wobble plate, resulting in mechanical bearing wear and potential misalignment of the target disk.

Commissioning & Calibration Tips

When performing a static calibration check, mount the proximity probe perpendicularly to the micrometer face. Tighten the probe holder collar firmly but do not over-torque, as this can distort the probe sleeve and cause false voltage readings. When charting the curve, step the micrometer in increments of 10 mils (0.010 inches) and record the corresponding DC gap voltage from the proximitor sensor. For highly precise results, verify that the target disk material on the TK-3g matches the target material of your operational machinery (typically AISI 4140 steel) to prevent material-induced calibration offsets.

Installation Guidelines