Torque Sensor Calibration
Torque Sensor Calibration should only be performed by an operator with the necessary calibration wheels or arm and weight sets or by a calibration lab. Mountz offers calibration services to perform this function. LTT calibrations are done in conjunction with a PC Windows based Calibration Program. The program is easy to use and guides the user through the calibration steps. Once the program is started and connected to the LTTmeter, a button "Start" is provided to start the calibration. All the needed information must be entered in the appropriate text boxes. This includes information such as the Sensor Model, Serial Number, the Full Scale torque value, the units of calibration and the transducer type (Bridge or Brushless). There is also a Scroll box to allow setting of the Calibration Interval. The default is 6 months but that can be changed. Once all required information is entered, the Start button is clicked, and its function changes to "Continue" as shown in figure below and procedural information will be given in the large text box. A 2-point calibration should work well in all but exceptional circumstances. Once the calibration is complete the calibration data will be stored in a Mountz "Smart" torque sensor using the ARCII protocol. For non-smart torque sensors the calibration data will be stored in the LTT internal memory. A sophisticated error correction algorithm assures that the data written to and retrieved from memory is always correct. Once the calibra- tion is finish, Torque Values will be displayed in the Torque Window allowing for verification of calibration data points. The "Delete Device" option allows the ability to delete non-smart sensors or transducers records from the LTTTorque Analyzer. In order to delete the device record for a non-smart sensor, the non smart sensor or transducer must be con- nected to the LTT Torque Analyzer. Ensure the LTT Torque Analyzer is powered on. Connect the non-smart device to the LTT. Use the scroll up or scroll down arrows on the keypad of LTTto locate the device to be deleted. Press enter on the LTTkeypad to complete the selection. Launch the torque meter interface program and go to the Sensor Calibration tab. Press "the Read From Sensor" tab located just above the "Delete Device" tab to read in the device information. A Calibration Data window should appear with details of the non-smart device. Click on exit to exit the Calibration Data win- dow. Please ensure to validate the details displayed on the screen to ensure the selection is as desired, as the "Delete Device" function will delete the device record. A non-smart device can only be added back in by going through the cali- bration process. Press the "Delete Device" tab to remove the device record for the non-smart device. If there is a need to delete multiple non-smart devices, the above steps must be repeated for each non-smart device.
Page 30
Corporate Headquarters: 1080 North 11th Street, San Jose, CA95112 Phone: (408) 292-2214 Fax: (408) 292-2733 www.mountztorque.com
Made with FlippingBook Annual report maker