Common use of Recording instruments Clause in Contracts

Recording instruments. The recording instruments used shall be such that measurements can be made with the following degrees of accuracy: ∗/ The relationship of the reduced mass "mr" of the pendulum to the total mass "m" of the pendulum at a distance "a" between the centre of percussion and the axis of rotation and at a distance "l" between the centre of gravity and the axis of rotation is given by the formula: l mr = m a 1.3.1. Acceleration: accuracy = + 5 % of the actual value; frequency class of data channel: class 600 corresponding to ISO Standard 6487 (1980); cross-axis sensitivity = < 5 % of the lowest point on the scale. 1.3.2. Speed: accuracy: + 2.5 % of the actual value; sensitivity: 0.5 km/h. 1.3.3. Time recording: the instrumentation shall enable the action to be recorded throughout its duration and readings to be made to within one one-thousandth of a second; the beginning of the impact at the moment of first contact between the headform and the item being tested shall be detected on the recordings used for analysing the test.

Recording instruments. The recording instruments used shall be such that measurements can be made with the following degrees of accuracy: ∗/ The relationship of the reduced mass "mr" of the pendulum to the total mass "m" of the pendulum at a distance "a" between the centre of percussion and the axis of rotation and at a distance "l" between the centre of gravity and the axis of rotation is given by the formula: l mr = m a 1.3.1. Acceleration: accuracy = + 5 % of the actual value; frequency class of data channel: class 600 corresponding to ISO Standard 6487 (1980); cross-axis sensitivity = < 5 % of the lowest point on the scale. 1.3.2. Speed: accuracy: + 2.5 % of the actual value; sensitivity: 0.5 km/h. 1.3.3. Time recording: the instrumentation shall enable the action to be recorded throughout its duration and readings to be made to within one one-thousandth of a second; the beginning of the impact at the moment of first contact between the headform and the item being tested shall be detected on the recordings used for analysing the test.