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Wood dryers (drying kilns) catalogue (.PDF 4MB)
Wood dryers (drying kilns) catalogue (.PDF 4MB)

Catalogo Secadores de madera (.PDF 4MB)
ESP/ENG Catalogo secadores de madera / Wood dryers (drying kilns) catalogue (.PDF 4MB)

Katalog holztrockner Catalogue de sechoirs a bois (.PDF 4MB)
GER/FRA Katalog Holztrocknung / Catalogue de Séchoirs à bois (.PDF 5MB)

 Measurement & control equipment catalogue (.PDF 2.8MB)
Measurement & control equipment catalogue (.PDF 2.8MB)

Since 1990



Automatic control unit used  for drying process control in small capacity dehumidifying and conventional wood dryers (kilns)


Automatic controller for wood dryers MC-411R
Wood dryers:
Conventional kilns
Dehumidifying dryers
Mini (Low-cost) kilns (NKS)
Heat pumps
Additional equipment
Power electric switch board

Catalogues and manuals:
Wood dryer catalogue (.pdf 3.7MB)
NIGOS dryers (.pdf 956KB)
User manuals
Measurement&controll equipment catalogue (.pdf 2.8MB)

Automatic controllers for wood drying:
MC-411R, MC-412, MC-900R, MC-502R,
MC-600, MC-2000
Automation of existent conventional kilns

Archive (obsolete products no longer produced):
 (MC-100RM, MC-500R, MC-100R, MC-1000)

Wood MC meters:
Portable moisture meter RVD-904
Nondestructive moisture meter DVD-240

Control unit for steaming chambers PD-02
ISPM-15 wood pallet sterilization unit MKS-05

  • Used in small capacity dehumidifying and conventional wood dryers
  • Automatic and semiautomatic control
  • ON/OFF type of control
  • Drying of all types of wood regardless of the starting moisture content
  • 12 drying regimes
  • 1 input for air temperature measurement
  • 1 input for EMC measurement
  • Wood moisture content measurement in 4 points
  • 4 relay outputs

Automatic control unit MC-411R is a device that automatically controls drying process in small capacity dehumidifying and conventional kilns mounted by "NIGOS - elektronik".  Device achieves optimal drying conditions in the chamber through air temperature and humidity control.

Automatic and semiautomatic control mode are supported.

Drying of the wood always pass through several stages. When powered-up automatic control unit starts with measurement stage immediately, regardless of the chosen control mode. In semiautomatic control mode this stage last about 20 seconds in order to moderate the measurement. In automatic control mode this stage lasts until average wood moisture content is calculated.
Heating stage follows after, in case the temperature in the drying chamber is lower than the drying temperature needed. During this stage, temperature in the drying chamber is increased following heating gradient until minimal required drying temperature is reached, when drying stage starts.
Automatic control unit starts to control temperature/humidity/moisture in this stage. In automatic control mode MC-411R follows chosen drying regime and drying diagrams included in it. In semiautomatic control mode, these drying diagrams have no influence on drying, because user sets values for air temperature and humidity manually, and automatic control unit only act to maintain these values inside the drying chamber.

Transition from automatic to semiautomatic control mode and reverse is possible at any time. When such transition is made, drying process starts from a beginning. If automatic-to-semiautomatic control mode transition is made in the middle of drying, values for temperature and humidity that are measured in that moment become setpoint values for semiautomatic control mode until user change them manually.
In reverse situation (semiautomatic-to-automatic control mode transition), automatic control unit measures average wood moisture content in that moment, and uses this value to calculate setpoint values for air temperature/humidity according to a chosen regime.

After a power failure has occurred, drying process is interrupted and upon power supply reconnection MC-411R continues with drying starting from the drying point determined after measurement stage is finished.

Technical data of a MC - 411R automatic control unit are given in the following tables:
 Main characteristics
   Power supply  220 Vac; 50Hz; 4VA max
 Number of inputs  6
 Number of outputs  4
 Displays  Two 2-digit and one 3-digit x 7 segment LED, red;
 One 1 - digit x 7 segment LED, green
 Operating conditions  T: 0 ÷ 50 °C; RH: 5 ÷ 90%
 Storage  T: - 40 ÷ 85 °C; RH: 5 ÷ 90%
 Dimensions (WxHxD)(mm)  96 x 96 x 145
 Mounting hole (WxH)(mm)  91 x 91
 Weight  600g

 Air temperature
 Number of inputs  1
 Range  0 ÷ 100 °C; 0 ÷ 1000mV
 Air humidity
 Number of inputs  1
 Range  3.4 ÷ 54 % UGL; - 250 ÷ 3000 mV (UGL)
 Wood moisture
 content inputs
 Number of inputs  4
 Range  5 ÷ 150 %
 Relay  Application   - heating (2-pin; 8A / 250 Vac)
    - dehumidifying drying (2-pin; 8A / 250 Vac)
     - cooling/conventional drying (3-pin;8A / 250 Vac)
    - humidifying (2-pin; 8A / 250 Vac)

©2011 NIGOS-elektronik

18000 Nis • Srbija • Borislava Nikolica - Serjoze 12
Phone/fax. +381 18 / 211-212, 217-468 • E-mail: