Description

Configured for on-site testing and calibration in industrial environments, the Bently Nevada TK-3G (TK-3 Proximity System Test Kit) provides direct physical/electrical execution. This air-driven portable unit physically simulates controlled shaft vibration and target displacement. Consequently, the instrument validates the dynamic tracking loops of proximity transducer assemblies without requiring the prime mover to rotate.

Hardware Specifications

Eddy-Current Probe Scaling and Rotor Dynamics

The mechanical design utilizes an integrated, air-powered motor to spin an asymmetric wobble plate, replicating high-frequency rotor dynamics for testing sensors calibrated to standard eddy-current probe scaling metrics. Field technicians route the probe under test into the universal mount to establish baseline gap voltage validation (-10 VDC targets) via the removable spindle micrometer. Because the rotating assembly utilizes genuine AISI 4140 alloy steel target faces, the simulation matches real-world machine interfaces exactly. This precision target simulation provides continuous cross-talk suppression and isolates physical displacement characteristics from sensor assembly faults.

Frequently Asked Questions

Q: Why does the TK-3G use a pneumatic drive system instead of an electric motor?

A: The pneumatic drive design allows safe mechanical deployment in hazardous industrial areas or locations where portable electrical power connections are restricted or unavailable.

Q: Can this instrument calibrate non-standard proximity systems that utilize alternative target metals?

A: Yes. However, because the target face is default AISI 4140 steel, technicians must apply the corresponding material correction factors if the field system operates on different metallurgy.

Field Installation Guidelines

1. Place the calibration enclosure on a level, low-vibration workbench before connecting the pneumatic source line.
2. Limit the incoming compressed air pressure to a maximum threshold of 90 psi (6.2 bar) to prevent internal drive assembly damage.
3. Secure the test probe firmly into the universal swing-arm clamp without overtightening the block to prevent case distortion.
4. Keep hands, clothing, and external diagnostic leads clear of the spinning wobble plate when the pneumatic valve is open.
5. Wipe the AISI 4140 target plate with a lint-free towel before each test flight to prevent dust or oil films from corrupting data.