What is metal detector sensor?
What is metal detector sensor?
A metal detector is an instrument that detects the presence of metal nearby. Metal detectors are useful for finding metal inclusions hidden within objects, or metal objects buried underground. They often consist of a handheld unit with a sensor probe which can be swept over the ground or other objects.
How do you make a metal detector circuit?
This simple circuit consists of the following parts;
- Resistor – 3.3 k ohm – 1 nos.
- Resistor – 2.2k ohm – 1 nos.
- Resistir – 68ohm – 1 nos.
- Capacitor – 10uF/16V – 1 nos.
- Capacitor – 10pF – 1 nos.
- Capacitor – 100pF – 1 nos.
- Battery – 6V.
- NPN transistor – BC548 – 1 nos.
How do you test a metal sensor?
It is necessary to test a metal detector to be sure that it is working properly at the agreed sensitivity. To test the detector, pass product containing small metal test pieces of an exact size, through the detector. Confirm the samples are detected and rejected.
What is the deepest detecting metal detector?
Most metal detectors can detect objects about 4-8ʺ (10 – 20 cm) deep. In ideal conditions, a mid-range metal detector can reach 12-18ʺ (30-45 cm) underground. Some specialized detectors can go as deep as 65′ (20 m).
Which technology is used in metal detector?
VLF (Very Low Frequency) is a conventional single frequency continuous transmission technology. This is the traditional type of technology used in most basic metal detectors. Single frequency detectors create an electro-magnetic field, which is transmitted into the ground in a continuous wave.
Which circuit is used in metal detector?
LC Circuit
The LC Circuit, which consists of L1 (coil) and C1, is the main metal detector part of the circuit. With the help of this LC Circuit, which is also called as Tank Circuit or Tuned Circuit, the TDA0161 IC acts as an oscillator and oscillates at a particular frequency.
How do you check if the sensor is working?
To test for resistance, set the DVOM to Ohms scale. Unplug the sensor and connect either leads to the DVOM probes. Read the Ohm or resistance values and compare them to those of the manufacturer. If they don’t match, the sensor is defective.
