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Protection for crushers, mills and other machines

Metal detector SQ/SQTA

  • Monitors bulk materials in the mining and building materials industry
  • Self-adjusting and extremely easy to install
  • High-quality components ensure reliability and long service life
  • Detects ferrous and non-ferrous metals, iron oxide and ore are ignored
  • Probe and amplifier are immune to vibration and resistant to weather, dirt and stone chips
  • Sturdy aluminium design: particularly robust and easy to clean


Besonders stabiler Metalldetektor SQTA für Bergbau, Tagebau, Recyclingindustrie


The SQ and SQTA metal detectors offer good metal sensitivity for monitoring bulk materials in the mining and construction industry.

They are extremely durable, insensitive to vibrations and resistant to weather, dirt or stone chips. They are easy to install, handle and maintain.

Both are available for belt widths from 500 mm to 1,200 mm. At a belt speed of 0.1 – 4.0 m/s they can easily detect metal parts of the size of about M6 nuts and larger.

For a higher belt speed (M10 nuts) at a belt speed of max. 4.0 m/s we recommend the metal detectors SQ and SQTA.


Input Signals
Sensor and coaxial cable
Output Signals
Metal alarm: 1 Siemens comb relay with 2 potential-free changeover contacts
Switching capacity 230V, 6A resistive load, quiescent or operating current principle switchable.
Fault: 1 Siemens comb relay with 1 potential-free changeover contact
Switching capacity 230V, 6A resistive load.
Metal detection
Iron, non-ferrous (e.g. aluminium or copper), largely ignores ores Optional: complete blanking of magnetite Fe304
Belt widths
500 – 2,000 mm
Belt speed
0.1 – 4 m/s (other speeds on request)
Protection Type
IP 55
-20° C up to +55° C
Power Supply
230V 15 Hz +/- 15%, typ. consumption 15 VA
Sheet steel housing, prepared for wall mounting, 18 kg
from steel nuts M6
SQ: mono for lower debris heights
SQTA: tandem for higher debris heights

Delivery Scope


Further information for download:

Information about the sensitivities can be found in the data sheet which is available here for download as PDF.