Datasheet

Digital CO
2
Sensor Module for OEM Applications
EE893
Measured values
CO
2
Measurement principle Dual wavelength (non-dispersive infrared technology) NDIR
Working range 0...2000 / 5000 / 10000ppm
Accuracy at 25°C and 1013mbar 0...2000ppm: < ± (50ppm +2% of measuring value)
(77°F and 14.69psi) 0...5000ppm: < ± (50ppm +3% of measuring value)
0...10000ppm: < ± (100ppm +5% of measuring value)
Response time t
90
< 60s or < 105s; (depending on the measured value)
Temperature dependency typ. 1ppm CO
2
/°C (-20...45°C) (-4...113°F)
Calibration interval
1)
>5 years
Measuring time interval adjustable from 15s up to 1h (factory setting: 15s)
General
Digital interface E2 (details: www.epluse.com)
Supply voltage 4.75 - 7.5V DC
Average power consumption
2)3)
58µA (with 1h measurement interval) ...3.7mA (with 15s measurement interval)
Electrical connection contact pins, Edge Card Socket
(e.g. plug typ MEC1-108-2)
Working conditions -40...60°C (-40...140°F) 0...95% RH (not condensating) 85...110kPa (12.33...15.95psi)
Storage conditions -40...60°C (-40...140°F) 0...95% RH (not condensating) 70...110kPa (10.15...15.95psi)
1) under normal operating conditions
2) the average power consumption depends on the adjusted measuring time interval
3) Peak current see figure
Data loggers
Hand helds
Wireless transmitters
Building management
Demand controlled ventilation
Autocalibration
Outstanding long-term stability
Temperature compensation
Low power consumption
Very small size
Typical Applications
Technical Data
Key features
v1.1 / Modification rights reserved
EE893
The E+E CO
2
module EE893 is designed for OEM applications
and for demanding environments. A multiple point CO
2
and tem-
perature adjustment procedure leads to excellent CO
2
measure-
ment accuracy over the entire temperature working range; this is
a must for process control and outdoor applications.
The E+E dual wavelength NDIR CO
2
sensing procedure compen-
sates automatically for ageing effects. EE893 is highly insensitive
to pollution and offers outstanding long term stability.
With its small dimensions and electrical connection via contact
pins and pads, EE893 is the optimal choice for OEM devices such
as wireless transmitters, hand-helds or data loggers. The mea-
sured data, with a range of up to 10000ppm, is available on the
E2 digital interface.
An optional kit facilitates easy configuration and adjustment of the probe. The measurement interval can be
set according to the application requirements; by this the average current consumption can be reduced to less
than 60μA for battery-operated devices.
EE893
150