Fully automatic break tester adjustment and calibration

Fully automatic break tester adjustment and calibration

Haida Instrument 400-071-1808/0769-89280808

    In the measurement range, when the center of gravity of the pendulum cone is at the lowest point, the tip of the pyramid should be within ± 5 mm of the horizontal axis of rotation of the pendulum . If it is not within the allowable range, the lifting burst strength tester adjusts its balance.

Adjustment of zero point: remove the oscillating weight and the specimen splint, and then put the pointer to the maximum value, place the pendulum at the starting test position, press the release button, the pendulum swings, then the pointer must point at zero, otherwise Use the zero adjustment screw to adjust. When replacing heavy weights of different weights, the zero point must be recalibrated.

Paperboard Fracture Strength Tester Adjustment of Pointer Friction: Place the pointer at zero point, lift the pendulum at the starting test position, press down the release button, swing the pendulum, then the pointer must not exceed 3mm beyond zero , otherwise the indicator bearing is filled with oil. Lubricate or loosen the pointer spring pressure to adjust.

Calibration of the pendulum axis friction: When no weight is applied, the pendulum body is free to swing and stop, and the number of oscillations should not be less than 100 .

Cardboard Bursting Strength Tester anti-friction ring calibration resistance: zero the pointer adjusted, there will be an intermediate opening side length of 61mm aluminum equilateral triangle hole, bore hole platen with the sample of the positive plate, the pressure in the pressure plate In the middle, then release the piercing head with the anti-friction ring fixed. Observe the resistance of the anti-friction ring. It should not be more than 0.8 kg · cm (0.078 J) . If it does not meet the requirements, adjust the three top ball screws that pierce through the triangle to make The pressure of the spring is increased or decreased to adjust.

Cardboard piercing tester calibration of the total body pendulum torque: at the rear end of the pendulum body weight hole, add a small shaft, the end of the small shaft is equipped with a vertical downward screw, put the pendulum body in the position to be released, the lower end of the screw With the balance on one end of the scale ( or on the scale pan ) , release the pendulum and add a weight on the other end of the balance until the upper plane of the pendulum is parallel ( that is, the balance is balanced ) . The total moment of the pendulum is calculated as follows:

Total moment pendulum = Wh - W 'h'

In the formula: W- weight weight;

h - the center distance between the axis of the pendulum shaft and the coupling screw;

W ′ - the weight of the coupling screw;

h ' - The distance between the axis of the pendulum shaft and the center of gravity of the coupling screw.