Quality assurance of original R36AS rotary variable differential transformer angular displacement sensor

Product Descriptions

The R36AS RVDT (Rotary Variable Differential Transformer) is an angular position sensor that incorporates a proprietary non-contact design 

which dramatically improves long term reliability when compared to other traditional rotary devices such as synchros, resolvers and 

potentiometers. This unique design eliminates assemblies that degrade over time such as slip rings, rotor windings, contact brushes and wipers, 

without sacrificing accuracy.

High reliability and performance are achieved through the use of a specially shaped rotor and wound stator coil that together simulate the 

operation of a Linear Variable Differential Transformer (LVDT). Rotational movement of the rotor shaft results in a linear change in the amplitude 

of the output signal, directly proportional to the shaft angle change, while the phase of this signal indicates the direction of displacement from 

the null point. Noncontact electromagnetic coupling of the rotor provide infinite resolution.

AC operation eliminates the need for integrated signal conditioning components, thereby offering the user a very wide operating temperature 

range of -55°C to +150°C. Factory calibrated to operate over a ±30 degree range, the R36AS offers a non-linearity of less than ±0.5% of full 

range. Extended range operation up to a maximum of ±60 degrees is possible with increased non-linearity.

Packaged in Size 15 servo mount stainless steel housing, an MS style hermetic connector, and a shaft seal, the R36AS is the perfect choice for 

angular position sensing in harsh environments. Also see our other angular position sensor models, R30A (AC operation, aluminum housing), 

RSYN (high output, shock and vibration tolerant), R30D and R60D (bipolar DC operation), and the RVIT-15 Series (single ended DC operation, 

voltage or current output).

• AC operation

• ±60 degree angular sensing range

• Non-contact electrical design

• Wide operating temperature range

• Size 15 servo mount

• Stainless steel housing

• MS style hermetic connector

Product Features

• High accuracy

• Infinite resolution

• Long term reliability

• Wide -55º to +150ºC operating temp range

• Rugged stainless steel housing

• Shielded ABEC 3 precision bearings

Product Applications

• Valve position

• Machine tool equipment

• Rotary actuator feedback

• Dancer arm position

• Process control

Product Images

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