TR Instruction Manual - Dover Flexo Electronics, Inc

LOAD RATING CHARTNET FORCE -lbs. (N)LOAD RATING - lbs. (N)up to 15 (66) 12 (55)16 - 32 (71 - 142) 25 (110)33 - 63 (146 - 280) 50 (225)64 - 125 (284 - 556) 100 (450)94 - 188 (426 - 834) 150 (670)126 - 250 (560 - 1112) 200 (900)251 - 500 (1116 - 2224) 400 (1800)Step 4.COMPARE LOAD RATING WITH EFFECTIVE TRANSDUCER ROLL WEIGHTSometimes, a Tension Roll shell is so heavy that its weight uses up most of the operating range of thetransducer. When this happens, it may not be possible to adjust the tension indicating meter to readzero when tension is zero because the adjustment range of the electronic circuit has been exceeded. Tofind out if the roll is too heavy, compare the load rating with the effective weight of the roll as follows:Refer back to the Net Force formula used in Step 2 . The effective roll weight is the "W Cos(A)" termin the formula. If W Cos(A) is more than 95% of the load rating chosen, the tension meter willprobably not be adjustable to zero. If this is the case, one or more of the following changes must bemade to reduce W Cos(A) to less than 95% of the load rating:A. Reduce the roll weight by using a smaller diameter roll. This may not be possible due to strengthconsiderations.B. Increase angle A. (see Figure 14)C. Use the next higher load rating.22