Heated versions for high humidity, condensing conditions
Dual wavelength NDIR CO2 measuring principle
CO2 measuring range up to 50,000 ppm
T and p compensation with on-board sensors
Replaceable sensing module
IP65 protection class
Low power consumption
Excellent long-term stability
High insensitivity to pollution
Analogue output or Modbus RTU
User configurable and adjustable
The EE872 incorporates the E+E dual wavelength NDIR CO2 sensor, which automatically compensates for aging effects, is highly insensitive to pollution, and ensures excellent long-term stability. The multi-point CO2 and temperature adjustment lead to outstanding measurement accuracy. The RH sensing element with E+E proprietary coating is suitable even for aggressive and corrosive environments. Besides CO2, the EE872 also measures relative humidity (RH), temperature, and ambient pressure (p). Additionally, the devices also calculated the dew point temperature (Td). The heated versions of the EE872 are suitable even for high humidity and condensing environment. The IP65 enclosure and the PTFE filter cap offer excellent protection in a polluted environment. With a catalytic filter cap, the EE872 is also appropriate for applications with periodical H2O2 sterilization. The CO2 measured data is available simultaneously on the analog voltage and current outputs. Depending on the EE872 version, the RS485 interface with Modbus RTU protocol also offers the RH, T, p, or Td data. The free EE-PCS Product Configuration Software, together with an optional adapter cable, facilitates the configuration and adjustment of the EE872.
The CO2 Guard 10 reliably shows the carbon dioxide (CO2) concentration in the ambient air as a measure for indoor air quality (IAQ). The CO2 level indicated by the LEDs helps deciding on the need for ventilation, for example by opening the windows.
The TR9277-EO is a light harvesting, EnOcean® wireless transmitter, that measures CO2, Temperature and Relative Humidity in an attractive wall mount enclosure. The sensor is powered by ambient indoor light. The CO2 concentration in the space is indicated by pressing a side button and watching the flash sequence of LEDs on the right side of the light-harvesting panel.