Rotary Transmitters

Features

1, 4, 8 or 12 channels
Speed: up to 40,000 rpm
Resistance: < 0.2 mOhms
Noise: 25 µV
Signal: up to 0.3 A per cell
6 0 V AC/DC
Very low inertia
No slip rings (non-contact)
Insensive to electromagnetic disturbance
Long lifetime

Rotary Transmitters

Magtrol Rotary Transmitters 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. RS Transmitters can also provide the power supply signal to each transducer.

Magtrol's RS Series Rotary Transmitters do not use slip rings and are therefore arc-free, making them superior to all other rotary transmitters that use rings, brushes, wire loops and similar devices. Easy to use, installing RS Transmitters is as simple as connecting a cable. They require no power supply, batteries, software or parameter setup in order to operate. Standard models have a speed range of 0 to 20,000 rpm and a high-speed version (up to 40,000 rpm) is available.

Technical Specifications

	Cell	RS 204	RS 208	RS 212
Number of Channels	1	4	8	12
Speed Ranges	standard version : 0 to 20,000 rpm high-speed version : 0 to 40,000 rpm
Total Noise	Typically 25 µV (max. 50 µV) with two cells in series at speeds from 0 to 20,000 rpm
Contact Resistance of Cell	Max. 0.2 milliOhms for 2 cells in series with an instantaneous variation from 0 to 5000 rpm
Insulation Resistance	More than 10 GigaOhms for two adjacent cells
Load Current	Max. 0,3 A per cell
Load Voltage	60 V AC or DC between two cells or between cell and transmitter housing
Temperature Range	-25 °C to +60 °C
Thermal EMF	Typically 2 µV with two cells connected in series and at speeds from 0 to 20,000 rpm; corresponding to a possible error of 0.05% for a constantan-chromium nickel thermocouple, at a temperature difference of 600 °C
Connections (In/Out)	Soldering contact	Cables (400 mm input and 400 mm output cables included)

Applications

Signal Transmission Applications		Rotating Parts		Industries
Pressure Acceleration Oscillation Vibration Shock	Force Torque Temperature Displacement	Turbines Jet engines Turbocompressors Propellers Molding machine screws Spindles	Motors Machine tools Roll bearings Tilting pads Other machinery Tests on road & rail vehicles	Aerospace Machinery Paper Automobile Transportation