頻閃儀的主要用途是讓運動的物體停止運動以進行診斷檢查。 但是，頻閃儀也可用於測量轉速。 為此，需要考慮幾個因素。 首先，360°旋轉（例如，軸的末端）都應該可見被測物體。 其次，對象上應該有一些獨特的部分，例如螺栓，鍵槽或瑕疵，可以用作參考點。 如果正在查看的對象是完全對稱的，則用戶隻需在單個位置用膠帶或油漆標記該對象即可用作參考點。
The primary use for a stroboscope is to stop motion for diagnostic inspection purposes. However, the stroboscope can be used to measure speed. In order to do this, several factors need to be considered. First, the object being measured should be visible for all 360° of rotation (e.g. The end of a shaft). Second, the object should have some unique part on it, like a bolt, keyway or imperfection to use as a reference point. If the object being viewed is perfectly symmetrical, then the user needs to mark the object with a piece of tape or paint in a single location only, to be used as a reference point.
如果旋轉速度在便攜式頻閃儀的範圍內，請從zui高閃光率開始，然後將閃光率調低。 在某些時候，您將隻在物體的單個圖像上停止運動。 請注意，以兩倍於圖像實際速度的閃光速率，您將看到兩幅圖像。 當接近正確的速度時，您可能會看到三幅，四幅或更多幅實際速度諧波的圖像。 您看到的個SINGLE圖像是真實速度。 要確認真實速度，請記下讀數並將頻閃儀（http://www.butiela.cn/pinshanyi/）調整為該讀數的一半，或僅按÷2按鈕。 您應該再次看到一個圖像（可能相對於所看到的個圖像有相移）。
If the speed of rotation is within the range of the stroboscope, start at the highest flash rate and adjust the flash rate down. At some point you will stop the motion with only a single image of the object in view. Note that at a flash rate twice the actual speed of the image you will see two images. As you approach the correct speed, you may see three, four or more images at harmonics of the actual speed. The first SINGLE image you see is the true speed. To confirm the true speed, note the reading and adjust the stroboscope to exactly half this reading, or just press the ÷2 button. You should again see a single image (which may be phase shifted with respect to the first image seen).
例如，當查看具有單個鍵槽的軸時，您將以實際速度以及實際速度的1 / 2、1 / 3、1 / 4等看到鍵槽的一個靜止圖像。 您將看到2倍於實際速度的鍵槽圖像，3倍於3倍速度的鍵槽，依此類推。FPM等於zui高閃光速率下的軸每分鍾轉數（RPM），僅給出鍵槽的一張固定圖像。
For example, when viewing a shaft with a single keyway, you will see one stationary image of the keyway at the actual speed and at 1/2, 1/3, ¼, etc. of the actual speed. You will see 2 images of the key way at 2 times the actual speed, 3 key way at 3 times, etc. The FPM equals the shafts Revolutions Per Minute (RPM) at the highest flash rate that gives only one stationary image of the keyway.
如果您可以關閉設備並安裝一條反光帶，則可以輕鬆使用光學轉速計進行RPM測量。 當您無法關閉設備時，必須使用便攜式頻閃儀。 當閃光速率低於300 FPM時，人眼不容易被頻閃儀誘騙看到停止的圖像。 因此，頻閃儀幾乎不可能在300 FPM以下用於檢查或測量RPM，此時上海峰誌儀器有限公司工程師建議采用接觸式轉速表或光電轉速表進行轉速測量。
In instances when you can shut down the device and install a piece of reflective tape then an optical tachometer is easy to use for RPM measurement. Stroboscopes must be used when you can’t shut down the device. The human eye is not easily tricked into seeing a stopped image by a stroboscope when the flash rate is slower than 300 FPM. Therefore, stroboscopes are just about impossible to use below 300 FPM for inspection or to measure RPM.
轉速表和頻閃儀的測量單位：
FPM=flashes per minute
FPM:每分鍾頻閃的次數
RPM=Revolutions per minute
RPM：每分鍾轉速
上圖：用福祿克頻閃儀測量設備轉速
頻閃儀
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頻閃石英閃光管的工作原理
頻pin閃shan儀yi的de燈deng管guan又you叫jiao頻pin閃shan石shi英ying氙xian氣qi燈deng管guan是shi采cai用yong特te種zhong硬ying質zhi玻bo璃li管guan或huo者zhe石shi英ying玻bo璃li管guan，在zai玻bo璃li兩liang端duan用yong高gao溫wen把ba經jing特te殊shu工gong藝yi處chu理li的de點dian擊ji封feng裝zhuang成cheng形xing，頻pin閃shan儀yi燈deng管guan充chong入ru高gao純chun度du的de特te種zhong氣qi體ti（如氙氣），在燈管外部繞上金屬絲，或塗上特種開發薄膜而製成的氣體放電燈。
頻閃燈管的工作，需要一套幾倍的電路組件配套，才能發光工作。電路各部分功能和工作如下：
1.電容C3是頻閃儀燈管放電發光作儲存電量，它由直流電源V提供電源
2.電容器Ct是儲存觸發能量，經電阻R1和R2組成的分壓器，產生的分壓Vt，向電容Ct充電。該Vt值便是觸發線圈的初級輸入電壓值。
3.觸發線圈T2的初級線組連接著控製開關S，並與電容器Ct組成回路，而觸發線間的次級線圈組，則和閃光管的觸發線相連接。
4.當開關S閉合，Ct所儲存的電量向觸發線圈初級釋放。於是初級就有數千伏以上的高壓脈衝感應輸出，作用到頻閃儀燈泡觸發極上去。
5.該高壓脈衝使頻閃儀燈泡內氙氣電離，並與燈泡內電極形成電離導通。
6.電離導通使燈泡內內阻驟降，導致儲能電容器Cs向燈泡內放電。
7.電容器Cs的強電量使管內成雪崩式電離，形成電弧放電狀態，產生強烈光輸出。放電使Cs電壓驟降。降至一定程度後，不能維持雪崩式電離，於是電脈放電狀態停止，燈泡熄滅。
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