What Is Target ID and How Does It Work in Metal Detecting?
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If you've ever looked at the screen of a modern metal detector, you've probably noticed numbers appearing every time the detector finds a target. These numbers are known as Target ID, and they can help you decide whether a target is worth digging.
Target ID is a feature that estimates the type of metal beneath the ground by assigning it a numerical value based on the signal it produces. While it isn't always 100% accurate, Target ID is one of the most useful tools for identifying potential finds before you dig.
In this guide, we'll explain how Target ID works, what the numbers mean, and how to use them effectively.
Table of Contents
What Do Target ID Numbers Mean?
What Affects Target ID Accuracy?
Tips for Using Target ID Effectively
What Is Target ID?
Target ID is a feature found on many modern digital metal detectors that assigns a numerical value to a detected object.
The detector analyzes the signal returning from a buried object and estimates what type of metal it might be.
Depending on the detector model, Target ID may appear as:
- A number on the display
- A target category (such as iron, foil, or coin)
- A combination of numbers and audio tones
Target ID helps you make a more informed decision before digging.
How Does Target ID Work?
When the search coil sends an electromagnetic field into the ground, metal objects create a return signal.
The detector analyzes characteristics such as:
- Electrical conductivity
- Signal strength
- Phase shift
- Target response
It then compares this information to programmed values and displays a Target ID number.
Higher-conductive metals generally produce higher Target ID numbers, while lower-conductive metals produce lower numbers.
What Do Target ID Numbers Mean?
Every manufacturer uses a slightly different Target ID scale, but the general concept is similar.
Typical ranges may look like this:
| Target ID Range | Common Target |
|---|---|
| 0–15 | Iron, nails, small steel objects |
| 16–30 | Foil, small aluminum, pull tabs |
| 31–60 | Gold jewelry, nickels, small brass |
| 61–80 | Copper pennies, larger brass objects |
| 81–99 | Silver coins, large copper coins |
These ranges are only estimates. Actual values vary by detector brand and model.
How Accurate Is Target ID?
Target ID is very helpful, but it isn't perfect.
Several different objects can produce similar Target ID numbers.
For example:
- A gold ring and a pull tab may display similar readings.
- A corroded coin may register differently than a clean one.
- Multiple nearby objects can confuse the detector.
Target ID should be used as a guide, not a guarantee.
What Affects Target ID Accuracy?
Several conditions influence how accurately a detector identifies a target.
🔹 Target Depth
Deep objects often produce weaker and less stable Target ID readings.
🔹 Soil Conditions
Highly mineralized soil can distort signals.
🔹 Target Orientation
A coin lying flat usually produces a stronger reading than one standing on edge.
🔹 Multiple Targets
Nearby trash can interfere with accurate identification.
🔹 Detector Settings
Sensitivity, ground balance, and discrimination all affect Target ID performance.
Tips for Using Target ID Effectively
To get the most reliable readings:
✅ Sweep Slowly
A controlled sweep provides more consistent Target ID numbers.
✅ Check the Target from Multiple Angles
Walk around the target and scan it from different directions.
✅ Watch for Consistent Numbers
Stable Target IDs are generally more reliable than numbers that jump around.
✅ Combine Target ID with Audio Tones
Use both the display and the detector's sound to make better digging decisions.
✅ Learn Your Detector
Spend time practicing with known objects to understand how your detector assigns Target ID values.
Common Target ID Mistakes
❌ Trusting the Number Too Much
Target ID is an estimate, not a guarantee.
❌ Ignoring Good Signals That Jump Slightly
Deep coins often produce slightly unstable readings.
❌ Digging Only High Numbers
Many valuable gold items register in the same range as pull tabs.
❌ Using Incorrect Detector Settings
Improper sensitivity or ground balance can reduce Target ID accuracy.
Frequently Asked Questions
1. What is Target ID on a metal detector?
Target ID is a numerical estimate that helps identify the type of metal detected before digging.
2. Are Target ID numbers always accurate?
No. They provide an estimate based on the detected signal, but factors like depth and soil conditions can affect accuracy.
3. Can Target ID tell if something is gold?
Not with certainty. Gold shares Target ID ranges with several common items, including pull tabs and aluminum.
4. Why do Target ID numbers change?
Changing soil conditions, target depth, orientation, and nearby objects can all cause Target ID values to fluctuate.
5. Should beginners rely on Target ID?
Yes, but it should be combined with audio tones, experience, and good detecting techniques for the best results.
Related Readings
For more tips and product insights, check out our latest blogs:
Why Is My Metal Detector Giving Me False Signals?
Battery Life of High-Performance Metal Detectors
For questions about Super Eye Metal Detectors, contact a Representative by calling 1-877-369-1199 or message us by clicking here.