CheckStar Rotary Torque Transducer

CheckStar Rotary Torque Transducer Crane’s CheckStar Rotary Torque Transducer sets the standard for dynamic torque and angle measurement of all continuous drive and impulse tools, with proven reliable performance in thousands of applications worldwide.   Whatever the vibration and shock loads experienced, CheckStar’s patented contact system ensures a connection is […]

CheckStar Rotary Torque Transducer

Crane’s CheckStar Rotary Torque Transducer sets the standard for dynamic torque and angle measurement of all continuous drive and impulse tools, with proven reliable performance in thousands of applications worldwide.

 

Whatever the vibration and shock loads experienced, CheckStar’s patented contact system ensures a connection is always maintained between the readout and the strain gauges. Inferior systems suffer from ‘brush bounce’ that leads to unreliable torque readings.

 

The CheckStar rotary torque transducer forms an essential part of the Crane UTA torque system, enabling automatic transducer recognition with Crane readout devices. On board intelligence means the UTA CheckStar is automatically recognised by the Crane readout device, eliminating set-up errors and enabling logging of serial number against measurements for complete traceability. An Industry Standard (IS) version is also available where a user needs the advanced features of the CheckStar but already has a readout device from another manufacturer.

 

Key Features

  • Dynamic torque measurement of all continuous drive and impulse tools
  • Proven reliable performance for impulse tool measurement
  • Guaranteed no brush bounce
  • Compact design and no size increase for angle option
  • Automatic transducer recognition with Crane display systems (Auto ID)

 

Special features Patented mechanism for reliable measurement of impulse tools
Tool compatibility All torque tools, including impulse tools (not impact tools)Joint kit recommended for off-line measurement of continuous drive and impulse tools to representjoint conditions
Physical measurements Bi-directional torque (clockwise calibration unless otherwise specified)Optional bi-directional angle encoder (also enables RPM measurement on suitable indicator)
Plug & Play transducer UTA system indicators read the following information from the UTA chip incorporated in the transducerdeviceTorque range, angle encoder data, serial number, calibration due date
Calibration Issued with calibration certificate traceable to National and International StandardsStandard Crane calibration: 10 points; single direction (clockwise unless otherwise requested);10% to 100% of nominal torqueBi-direction Crane calibration: (optional) 10 points; each direction; from 10% to 100% ofnominal torqueUKAS calibration: (optional) calibration to BS 7882Recalibration is recommended every 12 months
Transducer types UTA: incorporate data chip enabling automatic transducer recognition with compatible Crane indicatorsIS: ‘Industry Standard’ version; Bridge resistance: 350 Ohms
Construction Patented slip ring mechanism eliminating signal losses due to brush bounce and enabling lowrunning friction in either direction (<0.1% rated torque or 0.1Nm, whichever is greater); designis durability tested to >100 million revolutions with no measurable degradation of electricalperformance or wearAluminium housingStainless steel shaftOverload capacity: 125% rated torqueSquare drives to ANSI B107-4 – 1982; BS4006 – 1992; DIN 3121 – 1987Male square drive fitted with detent pin that may be removed if requiredFemale square drive supplied with retaining pin that may be removed if required

Female hex drive fitted with ball and spring retainer

Connections UTA version: 1m integral curly cable with strain relief; 25-pin ‘D’ port (male) for connection to UTA Cranesystem readoutsIS version: output connector to MIL-C 26482 / BS 9522 FOO 17Torque only: shell size 8-4PTorque and angle: Shell size 12-10P
Zero stability < ± 0.1% FSD/°C
Static accuracy ± 0.25% FSD
Operating environment Temperature: 5 – 40°C (-10 – 60°C with reduced specification)Humidity: 10 – 75% non-condensingIngress protection rating: IP40
Warranty 12 months parts and labour against faulty workmanship or materials
Patents applicable Slip-ring design protected by international patents

 

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