Automotive spare parts marine|torque meter|torque sensor|torque transducer

Marine shaft and wire strain gauge torque sensor

When torque is generated, the marine shaft power meter twists at an angle of 45° to the longitudinal axis.

A wire strain gauge is flatly bonded with the marine shaft power meter following the deformation of the torsion shaft. The wire strain gauge torque sensor consists of two unfolded wires arranged in a way that depending on the influence of torque one of the two wires lengthens, thus changing its electrical resistance.

Data transmission in digital torque meter

Since the measuring shaft is suitable for rotating applications, the data need to be transmitted off the marine shaft power meter. That is why there is an electronics assembly next to the wire strain gauge sensor preparing data and transmitting them via a transmitter.

A coil pair built up coaxially serves for the power supply of the rotary torque sensor assembly and wire straingauge sensor. A fixed coil induces a voltage into the rotating coil powering the rotating electronics assembly.

Thus there is contactless and maintenance-free power and data transmission in a torque meter so as to maintain the resistance.

The upper fixed part of the measuring shaft includes a receiver that receives the data verify them and display them via the connector.

In this way, about 10,000 measurements per second are transmitted and displayed.

The accuracy of torque measurement is about one part per thousand of the measuring the range which corresponds to 0.1%.

Speed measurement using torque transducer

In addition to the measurement of torque using torque meter, each measuring marine shaft power meter includes integrated speed measurement. An encoder scans a code disk generating two-speed signals with every 760 pulses per revolution.

Datum electronics has a great leader in the measurement of speed using torque the transducer in a rotating shaft

Since two signals out of phase are generated, the torsion direction can be identified as well.

Apart from the square wave signals of the code disk, the information on speed is displayed as DC voltage. This allows displaying the speed via simple tools, e. g. a digital torque meter.

Connection housing DF2

Datum electronics supplies torque sensor with matching connection cable of the USB the torque sensor and connection housing. This makes sure that the marine shaft operates properly and the accuracy can be ensured.

During calibration, the parameters of a torque sensor are evaluated which is done via references that are verified by an accredited test laboratory at regular intervals.

Calibration

Datum electronics perform a factory calibration following VDI/VDE 2646.

Several load cycles are run to determine the main properties of the sensor (relative and absolute deviation, range, zero drift, reversal error, etc.)

With calibration, each torque sensor, and torque transducer is set such that the output voltage corresponds to the scaling that is specified in the data sheets (e. g. 10 Nm/V).

We would recommend inspection of calibration following a specified time interval the period of which depends on the frequency of use and load.

Datum electronics is an expert in the field of load cell amplifier, helical screw piles, shaft rotating torque, flange torque sensor, static torque transducer, PTO power, PTO drive shaft and PTO sensor etc.

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