EE895

EE895

EE895 Miniature-Sensor Module for CO2, Temperature and Barometric Pressure
  The EE895 3-in-1 sensor module is an ideal choice for measuring devices for demand controlled ventilation, building automation or for process control. Due to the low power consumption, the module is also suitable for battery-operated devices such as hand-held meters, data loggers or wireless transmitters.
Type

EE895 CO2, temperature and ambient pressure module

  EE895 Evaluation Board with sensor module
A Single Module – 3 Measurands The EE895 module measures not only the CO2 concentration up to 10,000 ppm (1% CO2) but also the temperature (T) and ambient pressure (p). The pressure and temperature compensation with on-board sensors minimizes the impact of the environment onto the CO2 measurement. As a result, the EE895 offers a particularly high CO2 measurement accuracy, independent of altitude or changing ambient conditions.
Long-Term Stable CO2 Measuring Principle The dual wavelength NDIR CO2 measuring principle with auto-calibration ensures excellent long-term stability, as it automatically compensates for aging effects and is particularly resistant to contamination. The multi-point CO2 and temperature factory adjustment procedure leads to excellent CO2 measurement accuracy over the entire T working range from -40…60 °C (-40…140 °F).
Easy Design-In The I2C and UART interfaces, the very small dimensions of only 35 mm x 15 mm x 7 mm (1.38″ x 0.6″ x 0.27″) and various mounting options facilitate the design-in of the sensor module.
Flexibly Configurable The EE895 module can be configured via the digital interface. The CO2 measurement interval can be set according to the application and the power requirements.
EE895 Evaluation Board With the optional evaluation board, the sensor module can be easily tested with regard to the intended application.
Typical Applications Demand controlled ventilation
  Building automation
  Process control
  Data loggers, hand-held instruments
  Wireless transmitters
Key Features EE895 Dual wavelength NDIR with autocalibration
  T and p compensation of the CO2 measurement
  Very low power consumption and peak current
  I²C or UART interface
Technical data EE895  
MEASURING RANGE CO2 0…2000 ppm
  0…5000 ppm
  0…10000 ppm
ACCURACY CO2 AT 25 °C (77 °F) AND 1013 MBAR (14.69 PSI) ±(50 ppm +2% of mv)
  ±(50 ppm +3% of mv)
  ±(100 ppm +5% of mv)
MEASURING RANGE PRESSURE 700…1100 mbar (10.15…15.95 psi)
ACCURACY PRESSURE AT 25 °C (77 °C) typ. ± 2 mbar
MEASURING RANGE TEMPERATURE -40…60 °C (-40…140 °F)
ACCURACY TEMPERATURE AT 25 °C (77 °F) typ. ± 0.5 °C (± 0.9 °F)
DIGITAL INTERFACE I²C or UART
SUPPLY 3.3 – 5V DC