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How to use EMS to control natural ventilation depending of indoor CO2 concentration?

Hello, I would like to do is when the CO2 reaches 1000 ppm, the window will open. And I used EMS set the C02 concentration of the zone as a sensor. However, there is always an error: "unique key name not found" in the file, showing on the following. I was wondering if anyone could tell me how to create a unique name in "EnergyManagementSystem: Sensor". Thanks in advance.

* Severe * Invalid Output:Variable or Output:Meter Index Key Name =CARBON DIOXIDE * ~~~ * For Output:Variable or Output:Meter = ZONE AIR CO2 CONCENTRATION * ~~~ * Entered in EnergyManagementSystem:Sensor=CO2_CONC * ~~~ * Unique Key Name not found. * Fatal * Errors found in processing Energy Management System input. Preceding condition causes termination.

How to use EMS to control natural ventilation depending of indoor CO2 concentration?

Hello, I would like to do is when the CO2 reaches 1000 ppm, the window will open. And I used EMS set the C02 concentration of the zone as a sensor. However, there is always an error: "unique key name not found" in the file, showing on the following. I was wondering if anyone could tell me how to create a unique name in "EnergyManagementSystem: Sensor". Thanks in advance.

* Severe * Invalid Output:Variable or Output:Meter Index Key Name =CARBON DIOXIDE * ~~~ * For Output:Variable or Output:Meter = ZONE AIR CO2 CONCENTRATION * ~~~ * Entered in EnergyManagementSystem:Sensor=CO2_CONC * ~~~ * Unique Key Name not found. * Fatal * Errors found in processing Energy Management System input. Preceding condition causes termination.

How to use EMS to control natural ventilation depending of indoor CO2 concentration?

Hello, I would like to do is when the CO2 reaches 1000 ppm, the window will open. And I used EMS set the C02 concentration of the zone as a sensor. However, there is always an error: "unique key name not found" in the file, showing on the following. I was wondering if anyone could tell me how to create a unique name in "EnergyManagementSystem: Sensor". Thanks in advance.

*

 ** Severe  * ** Invalid Output:Variable or Output:Meter Index Key Name =CARBON DIOXIDE
   * **   ~~~   * ** For Output:Variable or Output:Meter = ZONE AIR CO2 CONCENTRATION
   * **   ~~~   * ** Entered in EnergyManagementSystem:Sensor=CO2_CONC
   * **   ~~~   * ** Unique Key Name not found.
   * **  Fatal  * ** Errors found in processing Energy Management System input. Preceding condition causes termination.

termination.