Belt tension measuring instrument

analog

Proper belt tension is essential for optimum power transmission and also for the life of the belt. To ensure optimum V-belt drive operation, it is recommended to check the tension in the belts by measuring the deflection force value (N) with the help of a tension measuring device. Belt tension in most of the drives can be checked with adequate reliability utilizing PIX Belts Tension Tester. Tension Measurement Procedure 1. Measure the span-length of the Belt in mm. (refer below sketch drawings) 2. Tie a string or a thread on the two pulleys along with the length of the Belt and mark the center of the span on the Belt. 3. Calculate 1.5% of the span (say ‘x’) for Belt length less than 1000 mm and 1.0% of the span for Belt length more than 1000 mm. Adjust lower ring on the tension tester on the millimeter scale to coincide, "x" mm with the lower side of the ring. Adjust lower side of the upper ring at 0.00 N. 4. Place tension tester at the center of the span of the Belt. Apply force with the help of tension tester perpendicular to the span, till the lower surface of the lower ring touches the string. 5. Read the deflection force value (N) on the Newton scale by taking reading at the lower side of the upper ring. 6. Compare the deflection force value (N) with the values given in the Table 'A'. The deflection force value (N) should lie between the minimum and maximum values given in the Table 'A'. (Next page) 7. Deflection force less than the minimum recommended value in the range indicates an under-tensioned drive & deflection force higher than the maximum recommended value indicates an over-tensioned drive.