Torque measurement for couplings and drive shafts

The StrainSense Series 420 CDS system provides accurate measurement of shaft power, torque and rotary speed.

The StrainSense Series 420 CDS system provides accurate measurement of shaft power, torque and rotary speed which can be indicated on analogue or digital displays, used as control input, or the data can be logged to a database in summary or detailed form.

The Series 420 is a noncontact system, the rotor and stator electronics are separated by a 5 to 15mm air gap according to application.

This concept offers long term reliability, in a maintenance free package.

The system can be installed on shafts from 30 to more than 600mm diameter.

The on-shaft electronics provide digital information relating to the shaft.

The stator electronics provide a selection of outputs typically required by industry such as 4-20mA, 0-10V and RS485.

For smaller shafts from 100Nm up to 40kNm where the shafts can be calibrated to a known torque on a test rig, system accuracy is 0.1 to 0.15%.

For larger installations and where shafts cannot be removed for calibration, the torque can be calculated to between 1 and 2% depending on the shaft data available, with signal repeatability to 0.1%.

StrainSense offers a complete service to survey, provide and install the on-shaft electronics, the off-shaft instrumentation and software.

For large installations, online reporting of the drive condition direct from the shaft data can be provided.

StrainSense has provided other similar systems, such as automotive drive train, power generation and test rigs.

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