Torsiometers

Specifications

	Wireless Torsiometer	Wired Torsiometer
Number of Axis	1
Resolution	+ 0.1º in a range of 180º
Bandwidth	From DC to 1 KHz (+0dB/-3dB)
Full Scale	±180º
Accuracy	± 2º measured over a range of ± 90º
Repeatability	1º measured over a range of 90º
Transducer Type	Strain gauge
Life1	600,000 cycles
Operating temperature range	+10ºC to +40ºC
Temperature zero drift	0.15 degrees angle / ºC
Battery Life	Up to 12 hours	N/A
Battery Type	Rechargeable Li-lon Polymer	N/A
Wireless Transmission Data Loss	Tolerant for 100 mS	N/A
Range from Interface	Wireless range up to 30m	Cable lengths available: 500mm, 1000mm, 1500mm (custom lengths available on request)
Available Sizes	Click to view Wireless Torsiometer In general, there are no fixed rules governing which size of sensor is most suitable for a particular joint; this depends on the size of the subject. The sensor must be capable of reaching across the joint so that the two end blocks can be mounted where least movement occurs between the skin and underlying skeletal structure. In certain circumstances more than one size of sensor will be appropriate. The following table is given for guidance only and refers to an adult population. Size used will vary within paediatrics.   Joint Output No. of Channels A Max A Min B C D E Weight (g) Z110 Neck Axial rotation 1 110 70 60 18 52 20 25 Z180 Forearm Pronation/supination 1 180 130 70 18 52 20 26 Z180 Back Axial rotation 1 180 130 70 18 52 20 26 (measurements in mm)	Click to view Wired Torsiometer In general, there are no fixed rules governing which size of sensor is most suitable for a particular joint; this depends on the size of the subject. The sensor must be capable of reaching across the joint so that the two end blocks can be mounted where least movement occurs between the skin and underlying skeletal structure. In certain circumstances more than one size of sensor will be appropriate. The following table is given for guidance only and refers to an adult population. Size used will vary within pediatrics.   Joint Output No. of Channels A Max A Min B C D E Weight (g) Q110 Neck Axial rotation 1 110 70 60 18 54 20 22 Q150 Forearm Pronation/supination 1 170 115 70 18 54 20 23 Q150 Back Axial rotation 1 170 115 70 18 54 20 23 (measurements in mm)
Compatible Interfaces	DataLITE PIONEER, ADVANCE, EXPLORE	DataLOG, DataLINK, Amplifier or 3rd party

¹Life test results have been collected by cycling the sensors through movements that would happen during everyday use. For example, placing a sensor on an adult elbow and moving from the neutral position to maximum flexion and back to the neutral position, the unit will function for typically 600,000 cycles.