The detection depth of a metal detector typically ranges from 0.3 to 6 meters, depending on the metal type, size, soil conditions, device sensitivity, and model. For example, civilian-grade detectors have a detection depth of approximately 0.3 to 1.5 meters, while professional archaeological models can reach 4 to 6 meters.
The detection depth of a metal detector is affected by multiple factors, including the conductivity of the target metal, soil mineralization, and the device's operating frequency. Based on our field measurements, portable metal detectors (such as the SHT-400) have an effective detection depth of approximately 0.3 meters for small objects like coins, and up to 1.5 meters for large metal boxes. Professional-grade devices (such as the TS-1218) utilize low-frequency enhancement technology, allowing detection depths up to 3 meters in low-mineralized soils. In terms of equipment parameters, our TS-1218 metal detector adopts the technical standards of the Ministry of Public Security. The working power supply is AC220/110V to DC, the alarm mode is light + buzzer dual prompt, and the external dimensions are 60×40×15cm, which is suitable for high-precision scenarios such as security inspection.
