Photogate Double – Speedometer
Photogate Double – Speedometer
This device is a speed measurement instrument that uses two light gates to measure the speed of objects, such as test balls or carts with a flag, as they pass through them. The speed is measured automatically and displayed digitally. The speed reading is in meters per second (m/s), but there is also an option to convert it to kilometers per hour (km/h). Additionally, the device features a stopwatch function and an audible alert when an object passes through the light gates.
Features:
- Speed measurement range: 0.00 to 160.0 m/s or 0.00 to 576.0 km/h
- Stopwatch function: 0.00 to 999.9 seconds
- Sensors: Photogates (infrared LED detectors)
- Power supply: 4 AAA batteries (not included)
- Dimensions: 70 × 80 × 70 mm
- Weight: 151 g (including batteries)
The device allows speed measurement of objects with a diameter of up to 40 mm. Additionally, it can be used in combination with other speed measurement devices and optional cables for acceleration calculations.
Easy to use:
Pressing Button A turns on the device. Then, using Button A, you can cycle through the measurement modes:
- Single-direction speed measurement
- Bi-directional speed measurement (e.g., for a pendulum)
- Stopwatch function
If you hold Button A for 2-3 seconds, the device turns off.
Using Button B, you can switch the measurement unit from m/s to km/h when in speed measurement mode or start/stop the stopwatch when in stopwatch mode. To reset the stopwatch, hold Button B for 2-3 seconds.
The device automatically turns off after being idle for 3 minutes.


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