Metal detector kharidne wale lagbhag har insaan ka pehla sawaal hota hai: “Ye kitne feet tak pakdega?” Online ads mein “10 feet”, “20 feet”, aur kabhi “100 feet deep metal detector” bhi likha milta hai. Is article mein hum samjhenge ki asli gehrai kya hoti hai aur kin cheezon par depend karti hai.
Sabse zaroori baat: gehrai target par depend karti hai
Koi bhi metal detector “X feet” ka nahi hota. Gehrai hamesha target ke size ke saath badalti hai. Ek hi machine:
- chhote sikke ko kuch inch gehrai par,
- bade bartan ya dhaatu ke dibbe ko kai feet gehrai par
pakad sakti hai. Isliye jab koi “20 feet” kahe, to poochhiye: kis size ke object ke liye?
Gehrai ka realistic andaaza
| Target | Aam VLF detector | PI + bada coil / two-box |
|---|---|---|
| Chhota sikka | Kuch inch se lagbhag 1 foot | Thoda zyada, lekin chhote targets par PI ka fayda kam |
| Angoothi ya chain | Kuch inch | Kuch inch se 1 foot ke aas-paas |
| Mutthi bhar dhaatu | 1–2 feet | 2–4 feet |
| Bada bartan ya dibba | 2–3 feet | Achhi conditions mein kai feet (jaise 6–10 feet+) |
Ye andaaze hain, guarantee nahi. Mitti, nami, aur object kitne samay se dabba hai, in sab se farak padta hai.
Gehrai kin cheezon par depend karti hai?
1. Coil ka size
Coil jitna bada, magnetic field utna gehra jaata hai. Isliye deep search machines ke saath 1 metre ya usse bade coils aate hain. Lekin bade coil chhote targets ko miss kar dete hain.
2. Technology
Pulse Induction (PI) machines mineralized zameen mein bhi stable gehrai deti hain. Two-box detectors (jisme do alag coil hote hain) khaas taur par bade, gehre objects ke liye bane hote hain, aur chhote kachre ko ignore karte hain. Technology ka farak samjhein: VLF vs PI.
3. Mitti
Laal, kaali ya namkeen mitti gehrai ghata deti hai. Padhein: mineralized zameen par detecting.
4. Object ka metal aur shape
Chandi aur taamba acche signal dete hain. Patla sona kam signal deta hai. Seedha khada object (jaise khada sikka) leta hua object se kam gehrai par milta hai.
“20 feet” wali machine kaun si hoti hai?
Bahut badi gehrai ka daava aam taur par teen tarah ki machines ke liye kiya jaata hai:
- Bade coil wale PI detectors: bade objects ke liye sach mein gehre jaate hain.
- Two-box / cache detectors (jaise Fisher Gemini 3): bade, gehre dabe objects ke liye
- 3D ground scanners: survey ke liye. Padhein 3D metal detector kya hai.
In sab mein bhi badi gehrai sirf bade objects ke liye hoti hai. Chhota sikka 20 feet par koi bhi metal detector nahi pakadta.
Dhokhe ke 5 sanket
- “100 feet”, “1000 metre range” jaise bahut bade numbers
- “Sirf sona pakadta hai” ka daava
- Coil nahi, sirf antenna ya rod. Padhein long range locator ki sachchai
- Live demo dene se mana karna
- Bill, warranty aur company address na hona
Sahi deep metal detector kaise chunein?
- Tay karein ki aap kya dhoondhna chahte hain: chhote targets ya bade, gehre objects.
- Apni zameen ki mitti ka type batayein.
- Seller se poochhein: “ek sikke aur ek bade bartan ki realistic gehrai kitni hai?”
- Demo apne saamne karwayein.
Vishco ki deep search machines, jaise Deep Scan 3D aur Pulse Induction models, Jodhpur mein Indian zameen par test hoti hain. Price aur specs Products page par dekhein.
WhatsApp par poochhein Call karein
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