CO2 Regulator for Duct, with ModBus / ES 899

The CO₂ regulator MODBUS is a combined sensor and regulator for a wide range of applications. For full control of ventilation in offices and/or as CO₂ sensor in more complicated ventilation systems.

It is provided with two independent 0-10V outputs. A proportional output based on the current CO₂ level, and one control output designed for control of damper or ventilation plant. Room temperature can be included as a control parameter. The MODBUS interface makes it possible to retrieve data and measured values from the unit.

Both design and ease-of-use have been prioritised

• Easy to set-up, install and adjust.
• Maintenance free.
• Discreet sensor ideal for mounting in households and office environments.
• Control of ventilation plant based on temperature and CO₂ level.
• Possible to adjust on the basis of CO₂ level alone.
• Possible to use as CO₂ meter and ventilation controller simultaneously.
• PID (proportional-integral-derivative) adjustment
• Two output control signal ranges available: 0 – 10V or 2 – 10V.
• Digital reading of measured values via MODBUS interface.

If on/off operation is required, the 24V DC power supply type PowerSupply 0.1-24 E with integrated setpoint relay is ideal to use together with the sensor.

CO₂ Sensor, modbus uses the widely used ABC algorithm, which ensures long life without calibration. Only the room cannot be used constantly, but must regularly get sufficient airflow to lower the CO₂ to fresh air level.