計時器的種類包括電磁打點計時器、電火花計時器、堅持計時器、停車計時器、反應(yīng)計時器、放大計時器以及windows計時器等等。電磁打點計時器和電火花打點計時器最為常見。電磁打點計時器是一種使用交流電源的計時儀器，其工作電壓是4-6V，電源的頻率是50Hz，它每隔0.02s打一次點。電火花計時器是利用火花放電在紙帶上打出小孔而顯示出點跡的計時儀器，使用220V交流電壓，當(dāng)頻率為50Hz時，它每隔0.02s打一次點，電火花計時器工作時，指導(dǎo)運動所受到的阻力比較小，試驗誤差比電磁打點計時器的要小。
FOTEK計時器 H3-3S DC24V  計時器 H3-口口、H3-M口口、H3-FK-M3、H3-TRD-30S、H2Y-口口、H3Y-口口、H5B-M口口、H5B-FK-M3、TM48-M口口、TM48-FK-M3、STPY/N-M口口、TDVY/N-M口口、MY-2P、MY-4P、SY-2D、SY-3D、H5T-4D、H5C-4D、H5M-4D
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