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ID: 193566
DOUBLE-TERM THERMOSTAT WITH RS485 - PROGRAMMED SYSTEM
Retired
DOUBLE-TERM THERMOSTAT WITH RS485 - PROGRAMMED SYSTEM
Producer: AVT

In many places it is required to maintain the temperature at a given value. This applies not only to living quarters in the winter but also to other, such as greenhouses.

The presented two-zone thermostat consists of three modules:

  • temperature sensor
  • executive system
  • controller simultaneously fulfilling the function of the user interface

All modules have an RS485 interface. Thanks to this, it is possible to distance the temperature sensors and actuators from the controller to a distance of up to 1,200 meters!

The presented thermostat allows you to measure temperature in three places: locally, near the controller itself and remotely in two points. The use of the RS485 interface to design not only enabled remote temperature measurement, but also made the transmission resistant to interference.

Recommendations: the project is not only functional, but also presents the use of the RS485 interface in its own device. We particularly dedicate it to people dealing with building automation.

Basic parameters:

  • tiles with dimensions: 69 × 45 mm, 68 × 39 mm, 128 × 44 mm
  • temperature stabilization in two zones
  • the possibility of local temperature measurement (at the controller)
  • temperature regulation range: from 0 to 40 ° C
  • accuracy of temperature measurement +/- 1 ° C
  • adjustable hysteresis in the range from 1 to 10 ° C
  • cooperation with LCD or VFD display
  • adjustable brightness level of the display
  • the parameters set are saved in non-volatile EEPROM memory
  • simple menu operation using the pulser
  • programmed layout

A version with a set of components for self-assembly AVT5178 B is available

Detailed description EP 03/09


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193566

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