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Flap Reject Metal Detector 0.7mm Sensitivity Customized Tunnel Food Grade

807 flap reject metal detector with upper and lower induction coils and permanent magnet signal processing technology, Fe sensitivity from 0.7mm, customizable tunnel width 400mm & height 100-200mm, intelligent magnetic induction filtering for foil packed products, 3mm SUS304 stainless steel construction for food, pharmaceutical and toy production lines.
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Flap Reject Metal Detector 0.7mm Sensitivity Customized Tunnel Food Grade
Flap Reject Metal Detector 0.7mm Sensitivity Customized Tunnel Food Grade
Flap Reject Metal Detector 0.7mm Sensitivity Customized Tunnel Food Grade
Flap Reject Metal Detector 0.7mm Sensitivity Customized Tunnel Food Grade
Flap Reject Metal Detector 0.7mm Sensitivity Customized Tunnel Food Grade
  • CQ-807

  • Chaoqiang

Chaoqiang · Flap Reject Metal Detector

807 Flap Reject Metal Detector — 0.7mm Sensitivity, Foil-Smart Detection

Built on upper and lower induction coils with permanent magnet signal processing — the 807 catches ferrous contaminants from 0.7mm, intelligently passes qualified foil packaging, and rejects bad products with a pneumatic flap before they reach your customers.

807 flap reject metal detector full machine with pneumatic reject mechanism and stainless steel frame

Technical Specifications

Detection sensitivity is validated per tunnel height. The 807 accepts fully customized tunnel dimensions, reject types and material options for your specific production line.

Sensitivity Matrix by Tunnel Height
Tunnel Height (mm) 100 120 150 200 250 300 350
Fe (φmm) ≥0.7 ≥0.9 ≥1.1 ≥1.4 ≥1.9 ≥2.9 ≥3.3
Note: Sensitivity above is measured under empty-machine condition. Actual detection sensitivity is affected by product characteristics and environment, and varies with the position of the metal contaminant. Non-ferrous and stainless sensitivity available on request.
General Parameters
Conveying Speed 25-30 m/min (adjustable)
Power Supply AC 220V · 50Hz · 120W
Detection Tunnel Width 400 mm — or customized
Detection Tunnel Height 100-200 mm — or customized
Machine Dimension 1400(L) x 820(W) x 900(H) mm
Body Material 3mm stainless steel
Reject Method Flap / Pusher / Air-jet — customized
Detection Coil Upper & lower induction coils

Newly Upgraded · Performance Enhancement

Six Reasons the 807 Outperforms

Absorbing advanced technology from Japanese and British counterparts — precise detection, smarter foil handling and less product loss.

Intelligent Touch Control

Color touchscreen HMI with signal waveform, threshold setting, counters and one-key motor start — set products and sensitivity directly on screen.

Position the Metal Accurately

Real-time signal strength bar with a visible threshold line pinpoints contaminants clearly, so operators react fast and product loss stays minimal.

Imported Infrared Sensor

Reliable infrared triggering counts and reacts to every contaminated item passing the detection head — accurate response every cycle.

Permanent Magnet Core

Upper and lower induction coils paired with permanent magnet signal processing deliver high sensitivity and strong anti-interference on the line.

Foil-Smart Filtering

Intelligent magnetic induction processing automatically passes qualified packaging of aluminum foil and other non-ferrous metal films.

3mm Stainless Steel Body

Thick 3mm stainless steel construction resists rust and oxidation in humid, washdown environments — stable performance and exquisite appearance.

Core Engineering

Every component of the 807 is engineered to keep sensitivity stable while your line runs at full speed.

807 metal detector detection head with electromagnetic field visualization

Dual-Coil Detection Head

Upper and lower induction coils work with permanent magnet signal processing for high sensitivity and strong anti-interference — a high-precision head built for continuous line duty.

  • Upper & lower induction coil design
  • Permanent magnet signal processing
  • Fe sensitivity from 0.7mm (100mm tunnel)
807 pneumatic flap reject mechanism with cylinder and chute at conveyor end

Pneumatic Flap Reject

A pneumatic cylinder drives a hygienic flap at the conveyor end — contaminated products are diverted into a collection chute automatically, keeping the line running without operator intervention.

  • Pneumatic cylinder driven flap
  • Flap / pusher / air-jet rejection (customized)
  • Stainless collection chute — easy cleaning

Product Details

Attention to every mechanical detail keeps the 807 stable in continuous operation and simple for your operators to maintain.

807 color touchscreen HMI with signal waveform and counters 1

Touchscreen HMI Panel

Color touchscreen with real-time signal bar, threshold setting, total / qualified / detected counters and learning function for quick product setup.

Pneumatic flap reject mechanism with cylinder at conveyor end of 807 2

Pneumatic Flap Reject

White hygienic flap driven by a pneumatic cylinder diverts contaminated products into the collection chute — automatic, reliable, easy to clean.

SUS304 stainless steel body material of 807 metal detector 3

3mm SUS304 Body

Advanced 304 stainless steel with 3mm thickness — no rust and strong oxidation resistance in humid washdown environments.

Smart chip digital core with intelligent detection and self learning on 807 4

Smart Chip Digital Core

Intelligent imported chip with self-learning and memory function — optimizes detection head accuracy and sensitivity automatically.

New Features

The upgraded 807 adds production-grade intelligence: 0.7mm sensitivity, foil-smart filtering and touchscreen learning — standard on every unit.

01 · SENSITIVITY

0.7mm Ultra-High Sensitivity

Fe sensitivity from 0.7mm on a 100mm tunnel — the sharpest detection in the Chaoqiang metal detector family.

02 · MAGNET

Permanent Magnet Processing

Upper and lower induction coils with permanent magnet signal processing give high sensitivity and strong anti-interference.

03 · FOIL

Foil-Pack Smart Filtering

Qualified packaging of aluminum foil and non-ferrous metal films passes automatically — no false rejects on foil-packed goods.

04 · TOUCH

Touchscreen Learning

One-key learning on the color touchscreen captures product characteristics and optimizes detection parameters automatically.

05 · COUNTERS

Batch Count & Traceability

Total / qualified / detected counters track every batch — meet audit and quality traceability requirements.

06 · CRAFT

Japanese & British Technology

Absorbs advanced technology from Japanese and British counterparts — stable performance, high cost performance and exquisite craftsmanship.

Where the 807 Works

Designed for detecting ferromagnetic metal impurities in products or raw materials — iron nails, iron wires, mesh screen fragments, fish hooks, screws, needle tips and metal tools.

Food & Pharmaceutical
Baked Goods
Snack Food
Coffee & Tea
Medicine
Health Care
Condiment
Desserts
Other Foods
Toy & Industry
Toys
Garments
Shoes
Textile
Chemical
Knitting
Plastic
Paper Product

From Our Factory, To Your Line

We are a source manufacturer of inspection equipment — the 807 is built, tested and batch-run in our own plant.

807 metal detectors in factory workshop with pneumatic reject components
Source Manufacturer

Factory-direct supply — machining, assembly and inspection of every 807 happen in our own plant.

Fully Customizable

Tunnel width, height, reject type and material are all made to fit your product and production line.

Proven on Parallel Lines

Multiple 807 units running side by side in production plants — stable performance under continuous duty.

Audit-Ready Counters

Total / qualified / detected counters on the touchscreen track batch output — meet audit and quality traceability requirements.

See Us at Trade Shows

Meet the Chaoqiang team at exhibitions worldwide — and bring your samples to test on the machine live.

Chaoqiang at the 2026 Shanghai exhibition
Chaoqiang at the 2025 exhibition
Chaoqiang at the 2026 Thailand exhibition
Chaoqiang at the 2026 Qingdao exhibition
Chaoqiang at the 2026 Wuhan exhibition
Chaoqiang exhibition booth

Get a Quote for Your Line

Tell us your product, belt width and tunnel height — we will configure the 807 to your exact spec.

Guangdong Chaoqiang Electronic Technology Co., Ltd · +86-18027086619 · lynn@chaoqiang1688.com
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