Electromagnetic field (EMF) monitoring device 330 – 2500 mG 電磁場（電磁場）監測裝置2500 – 330毫克

Characteristics
特點
Type:
類型：
electromagnetic field (EMF)
電磁場（電磁場）
Description
描述
The meter is sensitive to changes of as little as 0.5 of the strength of the Earth’s magnetic field, and the tone will sound whether the field increases or decreases. Model 2 is sensitive down to 0.05 of the Earth’s magnetic field when the optional external coil is used. After the meter detects an event, when the magnetic field then becomes stable for more than about five seconds, the tone will stop and the needle will return to zero. The meter will remain at rest until the field changes again. The threshold level (squelch level) of the tone is adjustable. The user determines the amount of change in the magnetic field required to sound the tone. If the field changes by the threshold amount, the tone will come on at a low pitch. If the amount of change is larger, the tone’s pitch will be higher. This meter can also be used to determine if anything is magnetized. For example, if a bed frame is magnetized, the meter can be held vertically and slowly be swept by hand over the bed. Any changes in the direction or strength of the magnetic field will register. A similar process can reveal the presence of magnetic rocks just below the ground.
該表對地球磁場強度的變化很敏感，而對磁場的增加或減小則會有0.5的聲音。模型2是敏感的下降到0.05的地球磁場時，可選的外部線圈使用。當儀表檢測到一個事件，當磁場然后變得穩定超過約五秒，音將停止和針將返回到零。該儀表將保持在休息，直到該領域的變化。閾值水平（靜噪水平）的音調可調。用戶確定在所需的磁場中的變化量的聲音的音調。如果該字段的閾值量的變化，該音調將在一個低間距。如果變化量較大，音調的音高就會更高。該表還可以用來確定任何被磁化的。例如，如果一個床上的幀被磁化，該表可以垂直地進行，并慢慢被手掃過的床。磁場的方向或強度的任何改變都將登記。類似的過程可以揭示存在的磁性巖石只是下面的地面。

Electromagnetic field (EMF) monitoring device 330 – 2500 mG 電磁場（電磁場）監測裝置2500 – 330毫克