Single plate metal detectors ERGUARD SCM


ERGUARD SCM is series of industrial metal detectors designed for detection of various metal inclusions in bulk or piece goods transported by conveyor belt.

Metal detectors ERGUARD SCM are most commonly applied to control product quality and also to protect process equipment from damage caused by metal objects sticking in machinery.

Principle description:

The principle of operation of metal detectors ERGUARD SCM is based on inductive balance method. The metal detector unit has three circuits: one transmitter and two receivers with null potential difference in case of metal absence. When tramp metal gets inside the detection field, the established balance is disrupted causing the detector to transmit a signal to the control panel by activating audio and visual alarm, rejection device or stopping conveyor for the time necessary to remove a product containing undesirable metallic inclusions.

The main characteristic of the metal detector is its sensitivity expressed in minimum diameter values of steel, brass and stainless steel balls, which the metal detector is able to detect at minimum belt speed and the most disadvantaged location of the balls in the detection area.

ERGUARD SCM sensitivity:

  • ferrous metal (Fe) Ø ≥ 3.0 mm
  • Non-Ferrous Metals (non-Fe) Ø ≥ 5.0 mm
  • Stainless steel (SS440) Ø ≥ 5.0 mm


The detector sensitivity values mentioned above were obtained under ideal conditions and may vary depending on installation site, aperture size, frequency at which the detector operates as well as electromagnetic properties of the product. ERGUARD SCM has the lowest sensitivity and most often used for bulk control. Its design feature allows mounting this detector easily into any production line. The detector housing consists of one plate which allows mounting it easily under conveyor belt. Single plate metal detectors are typically used when the height of the product layer on the belt does not exceed 100 mm. However, if it is needed to detect massive metal inclusions in big layer of product (up to 500 mm), i.e. low sensitivity is required, then single plate metal detectors are best suited for solution of such tasks.


Metal detector standard model ERGUARD SCM specifications

Depth ()
Width ()
400 500 600 700
400 600400120
25 kg
30 kg
- -
500 700400120
30 kg
40 kg
- -
600 800400120
35 kg
45 kg
55 kg
800 1000400120
40 kg
50 kg
65 kg
75 kg
1000 1200400120
50 kg
65 kg
80 kg
95 kg
1200 1400400120
60 kg
80 kg
95 kg
115 kg
1400 1600400120
70 kg
90 kg
110 kg
135 kg
1600 1800400120
80 kg
105 kg
130 kg
150 kg
2000 2200400120
100 kg
130 kg
160 kg
190 kg

When choosing the model of ERGUARD SCM metal detectors the following should be considered:

  • product coarseness (sizes);
  • electrophysical properties of product;
  • shape, size, material and orientation in space of all possible tramp metals, which a product may contain;
  • type of feeding and product movement speed through the detection area of the metal detector;
  • detector operating conditions;
  • way of rejection of the product with tramp metals from the "pure" product.

Technical specifications of ERGUARD SCM:

  • Industrial protection class: IP54;
  • Number of operating frequencies: maximum two. Values of operating frequencies can be selected depending on the product characteristics, it enables sensitivity increase;
  • Memory for 10 products allows you to adjust the detector quickly and accurately;
  • High vibration resistance due to its special design;
  • Automatic system of self-diagnostics (adjustment) of the metal detector necessary to ensure its stable performance;
  • Three levels of access to settings of detector parameters in order to avoid unwanted access of the personnel;
  • Digital Signal Processing;
  • Human-engineered and simple user interface.

ERGUARD SCM metal detector can be supplied as such extended option as ERGUARD ESCM. Depending on the tasks set and customers order metal detector can be completed with reject assembly and conveyor. Optional configurations are listed below.


ERGUARD CM / DCM / SCM / ECM / EDCM supplementary options:

  • Detector operating on belt with rivets;
  • Visual and audio alarm;
  • Differentiation of the detected metal: ferrous/nonferrous;
  • Remote control and monitoring of the detector with ModBus protocol with RS485 interface;
  • Installing another interface: RS232, Ethernet;
  • Event counter (real time clock);
  • Conveyor belt speed setting module on the part where the detector is mounted;
  • Beacon (remote warning light);
  • Remote operators panel;
  • Remote control with moisture and dust protection degree IP65;
  • Manufacturing of stainless steel housing of the detector for non-food industry;
  • Coating for highly corrosive environment;
  • Increased moisture protection;
  • Additional setting memory

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