BITERMO-AL is a microclimate controller that controls work of fans and heaters depending on temperature and time (function of periodical ventilation). It has got one control output with control of ‘ON/OFF’ type (Section 1).

The mode of operation and other crucial parameters of control are adjusted by means of four microswitches located inside the controller’s housing. Other parameters (settings) are stored in the controller’s memory. Their selection is made during operation of the controller by means of a keypad.

The temperature is measured by means of digital temperature sensors.

The controller has got one relay alarm output and it indicates alarms e.g. when the set temperature thresholds are exceeded (temperature is too low or too high), in case of power supply failure, temperature measurement line damage etc.

Wiring diagram of the BITERMO-AL controller with sensors and modules control:

Characteristics:

• temperature measurement is made by means of digital sensors, the possibility of connection of up to 4 sensors TEMP-201, one sensor is included in the set,

• a built-in ‘ON/OFF’ section with a relay output, voltage-free (NO and C contacts of a relay, load current up to 3A),

• large, easy to read three-digit LED display,

• relay alarm output (NO, NC i COM), 24 V, 200 mA.

Functions:

• choice of the mode of operation(ventilation/heating),

• change of the stage of section operation and thermal alarms by means of one parameter: preset temperature,

• hysteresis width adjusted by means of settings, independently for positive and negative deviation,

• periodical ventilation: setting the cycle duration,

• alarm function i.a . in case of exceeding set thresholds of temperature (upper and lower threshold), failure of the adjustment process, power supply failure, temperature measurement line damage.