CO2, or Carbon dioxide, is a colorless and odorless gas, constituting the fourth most abundant component in the Earth's atmosphere. Monitoring its concentration, especially indoors, is vital for maintaining a healthy and efficient environment.
TSM400-4-CP is a versatile sensor supporting the MODBUS RTU protocol via an RS-485 interface. This sensor is designed to measure barometric pressure and CO2 concentration.
The MODBUS device incorporates an advanced non-dispersive infrared sensing element (NDIR) for precise CO2 measurements. NDIR is the prevailing technology for accurately measuring CO2 concentration, relying on the absorption of specific wavelengths of infrared (IR) light by CO2 molecules.
The CO2 sensing element includes built-in humidity and temperature sensors, enhancing measurement accuracy.
For carbon dioxide measurements, self-calibration is available. This process occurs when the sensor is exposed to fresh air with an approximate CO2 concentration of 400 ppm.
The barometric pressure sensor comes factory-calibrated and maintains accuracy without requiring lifetime recalibration.
The TSH400-4-CP sensor is encased in a slim plastic enclosure, with the lower part designed for easy installation on standard flush-mounted or cavity wall boxes with a maximum installation opening of 61 mm.