What is a VLF Detector? Advantages and Usage Scenarios
VLF detectors are detector systems that operate in the low frequency band and are particularly notable for their "discrimination" capabilities. These systems can often give different warnings between ferrous and non-ferrous targets; thus, the user can perform more selective searches in areas with high trash density. The results obtained from VLF devices are directly related to the ground structure, device settings, and scanning discipline.
The basic principle of the VLF system
In VLF systems, the search coil sends a signal to the ground, and the metal target's response to this signal is processed by the device and transmitted to the user. The practical strength of VLF is evident in features such as target identification/toning, which provides clues about the type of target.
What does discrimination achieve?
Discrimination is used to reduce unnecessary digging, efficiently utilize search time, and perform "selective searching," especially in areas with high iron content. However, excessive discrimination can weaken some target signals, so settings should be adjusted carefully.
In which scenarios is VLF more suitable?
VLF systems generally offer a strong experience in locations such as parks, fields, and open areas; especially for searching near-surface targets and discrimination-focused searches. Stability increases and target signals become more legible when the ground mineralization level is low/medium.
Why is ground leveling critical?
Without proper ground balancing, the device may interpret natural ground effects as target signals, amplifying false signals. Correct ground balancing promotes more stable operation and clearer separation of the target signal.
Frequently Asked Questions
Which is better, VLF or Pulse?
"Better" alone is not a valid comparison. Ground conditions and target expectations determine which system is more suitable.
Is a VLF detector good for small targets?
In most scenarios, low target accuracy can be strong; however, coil, tuning, and ground conditions can alter the outcome.
Is it logical to maximize discrimination?
Generally, no. Excessive discrimination can weaken the signal of some targets; gradual and controlled use is healthier.