Annular Torque Transducers

Our largest capacity torque transducers, the AWS Annular Torque Transducers function as a reaction torque transducer to accurately measure torque values. They're used in a variety of industries, and are a favoured solutions in the Oil & Gas and Petrochemical sectors. The annular torque transducer range of 0.2kNm and 300kNm, when used as a reaction transducer, replaces the need for a rotary torque transducer.

125%

Overload Capability

0.2 - 300 kNm

Range covered

0.1%

Accuracy of the reading from 10 to 100% of rated output

3

Modes of operation (I Series)

Typical Use

Annular torque transducers comprise of strain gauged torsional tubes with drive flanges. They are primarily used to measure reaction torque on motor drive systems. This by holding the motor drive system from rotation measuring reaction torque instead of the complexities of measuring rotary shaft drive torque. This method removes the need for more complex rotary torque measuring transducers, also the additional inertia component if using a rotary transducer.

They can also be used as an inline torque transducer with appropriate drive shafts and flanges.

Close up of AWS logo on Annular Torque Transducer
Shiny smaller AWS Annular Torque Transducer

Wide Range

The series of AWS Annular Torque Transducers cover your high torque transducer requirements, covering a range from 0.2 - 300kNm.

Strain Gauged Torque Transducers

AWS Torque Transducers convert mechanical strain into a differential voltage signal. These voltage signals are then interpreted by a display to show your torque reading. It's a well tried and much proven technology, meaning it's less prone to failure than other methods, has high accuracy with long term stability. It also features infinite resolution, and is very temperature stable.

Compatible With Various Displays

AWS Annular Torque Transducers can be supplied with different output connections, allowing you to use them with the AWS Professional Transducer Display, other manufacturer's analogue displays or other manufacturer's displays which work with smart chip transducers. More details on this are listed below.

Recalibration at any calibration laboratory

Being an independent company, our equipment can be easily calibrated by any accredited calibration laboratory wherever they are in the world, allowing you to save time and cost by using local calibration services with short lead times.

Angled view of AWS Annular Torque Sensor

Various Adapters Available

Sold Separately

AWS can custom design and manufacture Annular Transducer Mounting Adapters to suit your mounting requirements, allowing you to fit annular torque transducers into your current setups whilst maintaining the accuracy of your torque application results. 

Manufactured to a high tolerance out of hardened stainless steel which helps eliminate corrosion and increase the lifetime of the torque adapter. Laser engraving on the adapter makes it easy to identify the size and model number.

What Features Do I Require?

The AWS Annular Torque Transducers can be supplied to work with a variety of displays to suit your requirements. Each series outlined below is designed to have different features, and to be compatible with one type of torque display.

  • I Series

    For use with AWS equipment such as the Professional Transducer Display
  • Includes an intelligent instrumentation PCB within the torque transducer housing
  • Outputs using CAN bus protocol
  • Eliminates the loss of signal
  • Allows for longer cables to connect the torque transducer and display
  • Three modes of operation (see below for more detail)
  • Annular torque transducer range covers from 0.2 - 300kNm

  • A Series

    For use with other manufacturer's analogue displays
  • Capable to work with other manufacturer's analogue displays
  • A lower cost alternative to the I and N Series
  • Outputs a mV signal proportional to the supply voltage and torque
  • Also capable to work with older AWS instrumentation
  • Annular torque transducer range covers from 0.2 - 300kNm

  • N Series

    For use with other manufacturer's displays for smart chip transducers
  • Includes a smart chip within the torque transducer housing
  • Outputs a mV signal proportional to the supply voltage and torque
  • The chip stores the serial number, part number, capacity and calibration value.
  • Annular torque transducer range covers from 0.2 - 300kNm

Modes of Operation - I Series

When used with the AWS Professional Transducer Display, the I Series range of torque transducers can be used in three modes of operation.

First Peak Mode

Used for click type torque tools, 1st Peak Mode detects, shows and retains the first peak reading in a fast dynamic memory, or is cleared automatically after three seconds if the auto cancel option is selected.

Peak Mode

Used for dial and cam type torque tools, Peak Mode shows, updates and retains the maximum reading in a fast dynamic memory. The maximum reading is retained until manually cleared.

Run Mode

Run Mode shows the torque value as they change as a live reading output.

AWS Annular Torque Transducer Ranges
I Series Model Number 1038 1039 1031 1032 1033 1034 1035 1046 1036 1037
A Series Model Number 2029 2030 2031 2032 2033 2034 2035 2046 2036 2037
N Series Model Number 3038 3030 3031 3032 3033 3034 3035 3046 3036 3037
Range 0.2 - 2kNm 0.3 - 3kNm 0.5 - 5kNm 1 - 10kNm 2 - 20kNm 5 - 50kNm 10 - 100kNm 12 - 120kNm 20 - 200kNm 30 - 300kNm

Technical Specifications

Dimensions

Dimensions of AWS 3kNm or more Annular Transducers

More Than 3kNm Dimensions (All dimensions in mm unless specified otherwise)

Capacity A B C D E F G H Number of Bolts Bolting Torque Weight (kg)
5kNm 55 76 177.8 184 152.4 M10 x 1.5 77 90 24 58Nm 6.1
10kNm 55 76 177.8 184 152.4 M10 x 1.5 77 90 24 58Nm 6.3
20kNm 70 95 212 212 195 M10 x 1.5 97 76 24 58Nm 8.1
50kNm 125 219.92 315 315 290 M16 x 2.0 126 110 40 248Nm 24.7
100kNm 125 219.92 315 315 290 M16 x 2.0 126 110 40 248Nm 25.3
120kNm 125 219.92 315 315 290 M16 x 2.0 126 110 40 248Nm 25.8
200kNm 205 239.92 520 520 492 M16 x 2.0 130 146 56 248Nm 52.5
300kNm 205 239.92 520 520 492 M16 x 2.0 130 146 56 248Nm 52.5
Dimensions for 2 & 3kNm AWS Annular Torque Transducer

3kNm Or Less Dimensions (All dimensions in mm unless specified otherwise)

Capacity A B C D E F G H I J Number of Bolts Bolting Torque Weight (kg)
2kNm 39 69 84.1 119 99.06 M5 x 0.8 79 84.5 92.5 59 24 12Nm 2.4
3kNm 39 69 84.1 119 99.06 M5 x 0.8 79 84.5 92.5 59 24 12Nm 2.4
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