China Wholesale Hearing Threshold Factory – LMEC-18/18A Free fall Apparatus – Labor

LMEC-18 Free fall Apparatus

Experiments
1. Verify the motion equation of free falling body;
2. Measurement of local acceleration of gravity.
Main technical parameters
1. The height of the test stand is 100cm, the upper end is electromagnet, and the lower end is equipped with damping system;
2. There are 2 laser photo gates, standard TTL signal output interface, and the distance and position of photo gate can be adjusted;
3. Electromagnet is used to control the drop of steel balls, and three kinds of steel balls with different diameters are equipped;
4. The test data were collected by 192 × 64 LCD display, test time range 0 ~ 99999 μ s. Resolution 1 μ s； It can store 180 data with query function;
5. The tester can be used in other experiments such as timing and cycle counting. It has the function of stopwatch timing.

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LMEC-18A Vacuum Free fall Apparatus

Experiments
1. Verify the motion equation of free falling body;
2. Measurement of local gravity acceleration;
3. The falling time of objects in different vacuum degrees is measured, and the relationship between falling time and vacuum degree is studied.

Main technical parameters
1. Timer: range 0 ～ 9999999 μ s. Resolution 1 μ s ； The charged magnet controls the output and the drop of the ball;
2. Rotary vane vacuum pump: power ≥ 180W, pumping speed ≥ 1L / s, speed ≥ 1400 rpm;
3. Pointer vacuum gauge: Range – 0.1 ~ 0mpa, graduation 0.002mpa;
4. Double light switch timing, position adjustable, eliminate the initial error caused by electromagnet, etc;
5. A 2m tape is used to measure the falling distance of the ball.