Pulley Calculator to calculate pulley and belt details.

It is a sonic belt tension meter. Calculate the tension (unit: N)of the belt (timing belt etc) tightened between the pulleys fromthe frequency when the belt is played. Measurement method 1,initial setting I will set the belt. 1) Press the setting button.Enter the state of the belt you want to measure. 1, the number ofteeth of the left and right pulleys and the number of teeth of thebelt. 2, pitch of belt mm. 3, Unit Length Weight g / (m · mm) ≒Belt Width: 1 mm x Belt Length: Weight of 1 m g. 4, width of beltwidth mm. Note) When the unit of weight per unit weight of belt iskg / m (weight per kg) 3, W (kg / m) x 1000 in unit length mass 4,Please enter 1 in the width of the belt! 2, measurement 1) Move thesmartphone's caller to the center of the belt you want to measureand press the start button. (The display under measurement will bedone.) 2) Play the center part of the belt and generate a soundlike a string. (When playing the belt, its frequency converges to acertain frequency corresponding to the tension of the belt.) 3) Ifvibration of a certain frequency of the belt is detected, thetension (unit N) of the belt calculated by setting the frequency ofthe sound when it is detected, its frequency and the belt set with1 is displayed on the monitor. (If you do not measure well, tryremoving the surrounding noise or adjusting the sensitivity (+ -button)) Increasing the sensitivity cuts out small soundvibrations, and conversely lowering the sensitivity also detectssmall sound vibrations, but it makes detection of noise noiseeasier. The maximum detection frequency is 400 Hz. Caution Thistool uses the recording function of smart phone, and obtains theobtained waveform A certain frequency is detected with a simplemethod. For this reason, please use measurement results andaccuracy as a guide only. Remarks Calculation formula of belttension conversion from frequency is carried out by the followingcalculation. Remarks Calculation formula of belt tension conversionfrom frequency is carried out by the following calculation. Hz:Measurement frequency / sec T 1: pulley 1 number of teeth T 2:Number of pulleys 2 teeth B: Number of belt teeth P: Belt pitch mmM: Belt unit mass g / m.mm (1 mm width x 1 m belt weight g) W: Beltwidth width mm Note) When unit of mass per unit weight of belt isset to kg / m (weight per kg) M = W (kg / m) x 1000, w = 1 (mm)Please enter! Z: Pulley shaft length S: length of linear portion ofbelt R1: Pulley 1 radius R 2: Pulley 2 radius Pi: Pi = 3.14 ,,, R 1= t 1 × p / pi R 2 = t 2 × p / pi Z = (b + (b ^ 2- 8 x (r 1 - r 2)^ 2) ^ 0.5) / 8 S = (Z ^ 2- (r 1 - r 2) 2/4) 0.5 Belt tension N = 4× m × w × S ^ 2 × Hz 2 × 10 ^ - 9

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