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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 conventional wood dryers (kilns)
This model is no longer produced!)

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 conventional dryers
  • Automatic, semi-automatic and remote (via PC computer) control
  • PI type of control
  • Drying of all types of wood regardless of the starting moisture content
  • 12 invariable and 8 variable (user) drying regimes
  • 2 inputs for air temperature measurement
  • 2 inputs for EMC (UGL) measurement
  • 1 input for working medium temperature measurement
  • Wood moisture content measurement in 6 points
  • 8 relay outputs
  • Flow fans control
  • Flow fans direction control
  • Data recording every 3 hours (up to one month)
  • Alarm
  • Communication

Automatic control unit MC-100R is a device that automatically controls drying process in conventional kilns installed by our company "NIGOS-elektronik". Unlike automatic control units used in dehumidifying kilns which use ON/OFF type of control, MC-100R uses PI type of control.

Drying of the wood is achieved through air temperature and humidity control. Automatic control unit MC-100R controls this process. Parameters that describe conditions in the drying chamber are obtained through air temperature/humidity and wood moisture content measurement. Wood moisture content is measured in 6 points while temperature and air humidity are measured in 2 points. MC - 100R has an ability of inbound medium temperature measurement in 1 point also. These values are displayed on the MC-100R's LCD and LED displays, so the overview of current conditions in the drying kiln is always possible.

Control of the servo heating valve provide the overall air temperature control. In the similar way, control of the servo drive for opening/closure of flaps and servo humidifying valve (atomizers) provide the overall air humidity control.

MC-100R controls its relay outputs completely automatically. All output adjustments are set in the factory during production, so the end-user do not have to make any additional adjustments. All irregular situations are detected and can be solved in automatic control unit itself, or some user/vendor actions must be taken, depending on the type of irregularity that occurred.

Automatic, semiautomatic and remote (via PC computer) control mode is available.

When in automatic control mode, MC-100R follows the chosen drying regime and achieves optimal drying conditions in the kiln with automatic control of installed equipment through its relay outputs. There are 20 available drying regimes given to the user to chose from.  Some of them (12) are invariable given by "NIGOS", while user can alter or make 8 new regimes.

In semiautomatic control mode, user can set desired setpoints for air temperature and humidity based on the personal experience, and the automatic control unit only maintain those values inside the kiln at the desired point.

Drying of the wood always pass through several stages. When the drying starts, automatic control unit enters measurement stage. In this stage, data needed for drying are collected from the air temperature and humidity and wood moisture content probes. After this stage is finished, heating stage follows if additional heating in the drying chamber is needed. When required temperature is achieved, automatic control unit advances to drying stage. Automatic control unit starts to control temperature/humidity/moisture in this stage. Conditioning is a stage performed at the near end of the drying in order to equalize moisture content on the surface and in the deeper section of the wood timber. Last stage is cooling stage when automatic control unit allows only air exchange system to operate. Air inside the drying chamber is cooled down until temperature set by user is achieved.

In all control modes, MC-100R automatically changes direction of flow fans. After a certain time, and with a short pause between, MC-100R alternates direction of reversible flow fans, which is indicated on LCD display. User can alternate direction manually, if needed.

If during the drying process some alarm situations occur, they are detected, shown on a display, and an alarm is turned on. Alarm situations are divided into 2 groups, which are: 

  • warnings - drying process continues, but error notification is shown
  • alarms - drying process is interrupted because an equipment malfunction is detected

After a power failure has occurred, drying is automatically continued starting from the measured wood moisture content upon power supply reconnection.

Since MC-100R has a built-in communication port, it can be connected to a PC computer, which enables control of a drying process from a distance (office or suitable operating room). Also, up to 15 kilns can be connected to a single PC.

All relevant data of a drying process are recorded in MC-100R's internal memory. Data samples are taken every 3 hours. Internal memory can hold such data for a period of up to 1 month.

Technical data of a MC-100R automatic control unit are given in the following tables. 

 Main characteristics
 Power supply  220 Vac; 50/60Hz; 300mA
 Number of inputs  19
 Number of outputs  8
 Displays  4 - rows x 20 - characters LCD;
 tripled, 4 - digit x 7 - segment LED
 Operating conditions  T: 0 ÷ 50 °C; RH: 5 ÷ 90%
 Storage  T: - 40 ÷ 85 °C; RH: 5 ÷ 90%
 Dimensions (WxHxD)(mm)  250 x 115 x 135
 Mounting hole (WxH)(mm)  252 x 117
 Weight  1000g

 Air temperature
 Number of inputs  2
 Range  0 ÷ 100 °C; 10mV / °C
 Air humidity
 Number of inputs  2
 Range  2.7 ÷ 30 % (UGL)
 Wood moisture
 content inputs
 Number of inputs  6
 Range  5 ÷ 150 %
 Control inputs
 for temperature
 Number of inputs  1
 Range  0 ÷ 200 °C; 10mV / °C
 Digital inputs  Number of inputs  8

 Relay  Number of outputs  8
 Characteristics  3-pin; 8A / 250 Vac, constant 3A max
 Number of outputs and
 2 outputs for temperature control
 2 outputs for flow fans control
 2 outputs for air humidity control
 1 output for humidifying
 1 alarm output

 Digital  Communication standard  EIA 485
 Protocol  S - NIGOS


©2011 NIGOS-elektronik

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