2415 Pleasant View Rd.
Middleton, WI 53562
1.
Introduction
1.1 DESCRIPTION
Meridian Laboratory Ultra High-Speed Slip Rings are used for signal transmission of transducers on a rotating
part (e.g. engine shaft) to a stationary system (measuring instrument or PC). They are exceptionally well-
suited for the transmission of low-level electrical signals, such as those from thermocouples, extensometer
gauges and strain gauges, as well as transducers to measure oscillation and acceleration. UHS Slip Rings
can also provide the power supply signal to each transducer.
The ROTOCON UHS Series provides a low transfer resistance and a high insulation resistance. They also
significantly reduce the EMF noise generated at the cell connections. These brushless slip rings are therefore
arc-free, making them superior to all other slip rings that use rings, brushes, wire loops and similar devices.
Meridian Laboratory Ultra High-Speed slip rings are used wherever measurement of rotating items is needed
in research and development laboratories, as well as in duration tests on objects under working conditions.
Through high-performance data transmission, Meridian Laboratory UHS Slip Rings enable the measurement
of pressure, acceleration, oscillation, vibration, shock, force, torque, temperature and displacement of rotating
parts such as: turbines, jet engines, turbocompressors, propellers, motors, machine tools, bearings, tilting
pads, molding machine screws and other machines, as well as for running tests on all types of road and rail
vehicles.
1.2
OPERATING PRINCIPLES
ROTOCON UHS Slip Rings contain small reservoirs of mercury to make the connection between the
stationary system and the rotating part. Each cell in the slip ring contains a reservoir of mercury (see Figure 1-
1) into which a hollow shaft, 2 mm in diameter, dips as a contact. Each cell of the slip ring provides one
transmission channel.
Within each cell, the reservoir remains fixed while the axis is driven by the rotating part. The cells are
electrically insulated from each other and the outside by plastic couplings. The low friction surface between
the reservoir and the axis guarantees a minimum heating of the device. This avoids the generation of an EMF
due to the Peltier effect, which would be induced by the heating of the contact point between the two metals.
In addition, the insulation resistance between the cells remains intact since there is no formation of vapor that
would cause the appearance of leakage currents.
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