RT312 Rotary Temperature Transmitter (850-600)

RT312 Rotary Temperature Transmitter (850-600)

The RT312 is a two-channel temperature measurement system designed to monitor temperature on heated rolls. The system features a linear 4-20mA output from the controller interface for use with standard process controllers. Error detection modes protect the heater from damage and expedite troubleshooting in the event of a sensor or other failure. Digital circuitry from sensor input to signal output and generous clearance between the rotating and stationary components make the RT312 a robust and reliable element in the temperature feedback loop.




























1. Slide RT312 rotor over shaft, attach ring lugs from the RTD sensor to the RT312 rotor RTD terminals, and tighten securely. (See Rotor/RTD Wiring Diagram)

2. Mount RT312 rotor using M10 screws, split washers and aluminum standoffs and tighten securely. (See Installation Diagram)

3. Slide the RT312 stator onto shaft making sure to orient the stationary coil board towards the rotor coil board as shown above.

4. Verify rotor-stator spacing (12mm +/- 5mm) and secure the stator with the two M5 setscrews shown above. Loctite 222 or equivalent is recommended on the setscrew to prevent it from loosening.

5. Connect the RT312 stator to the RT302C controller interface using the 10-meter coaxial cable provided.

6. Position and secure RTD wiring and signal cables away from rotating equipment to prevent cable damage.


In normal operating mode the Power status light, the Data status light and the Channel (Ch) status light are all on solid. In error mode, one or more of the lights on the RT302C Controller Interface will flash and a high temperature signal (approximately 24mA) will be output. Refer to the table below when troubleshooting an error mode event.










If the status lights do not agree with conditions listed above, remove power to the RT302C for 5 seconds, and then restore power (to reset the digital circuitry). Go to for more trouble shooting aids.


Binsfeld Engineering Inc. warrants this product to be free from defects for a period of one year from the date of delivery to the original purchaser and that its products will conform to specifications and standards published by Binsfeld Engineering Inc. Upon evaluation by Binsfeld Engineering Inc., any product found to be defective will be replaced or repaired at the sole discretion of Binsfeld Engineering Inc. Our warranty is limited to the foregoing. Binsfeld Engineering Inc. disclaims any warranty of merchantability or fitness for intended purpose.