EE820
CO2 Sensor for Demanding Applications
The EE820 CO2 sensor is optimized for use in harsh, demanding
applications, such as hatchers, incubators, life stock barns or
greenhouses.
Outstanding Accuracy
A multiple point CO
and temperature factory adjustment
2
procedure leads to excellent CO2 measurement accuracy over
the entire temperature working range, so the EE820 can even be
installed outdoors.
Long-term Stability
The EE820 incorporates the E+E dual wavelength NDIR CO
2
sensor, which compensates for ageing effects, is highly insensitive
to pollution and offers outstanding long term stability.
High Resistance to Pollution
With its robust, functional IP54 enclosure with a special lter the
EE820 can be employed even in harsh environment.
Fast Response Time
The fast response time version of EE820 is tted with a forced air
circulation module installed behind the lter.
Analogue and Digital Outputs
The CO
measured data range up to 10 000 ppm is available on the analogue output (voltage / current) or on the RS485
2
interface with Modbus RTU or BACnet MS/TP protocol.
Easy Conguration and Adjustment
An optional adapter and the free EE-PCS Product Conguration Software facilitate the conguration and adjustment of
the EE820.
Features
IP54 Enclosure
Bayonet screws
» Open/closed with a ¼ rotation
Appropriate for US mounting
requirements
» Knockout for ½” conduit tting
External mounting holes
» Easy and fast mounting with
closed cover
» Electronics protected against
construction site pollution
Electronics
» Optimum protection against mechanical
damage during installation
» CO2 autocalibration
» Temperature compensation
» Excellent resistance to pollution
Test report
» According DIN EN 10204 - 2.2
Service interface for
conguration and adjustment
232
v1.6 / Modification rights reserved
EE820
EE820
Technical Data
Measured values
Measuring principle dual wavelength non-dispersive infrared technology (NDIR)
Measurement range 0...2 000 / 5 000 / 10 000 ppm
Accuracy at 25 °C
and 1 013 mbar
0...10 000 ppm: < ± (100 ppm +5 % of mv)
Response time t
140 s (fast, with forced air circulation module)
Temperature dependency typ. ± (1 + CO
Sample rate approx. 15 s
Output
Analogue
0...2 000 / 5 000 / 10 000 ppm 0-5 / 0-10 V -1mA < I
4-20 mA R
Digital Interface RS485 with max. 32 unit load devices on one bus
Protocol Modbus RTU or BACnet MS/TP
General
Supply voltage 24 V AC ±20% 15 - 35 V DC
Current consumption, typ. 15 mA + output current, for standard response time
60 mA + output current, for fast response time
Current peak, max. 350 mA for 0.3 s (analogue output)
150 mA for 0.3 s (RS-485 interface)
Warm up time
Enclosure material Polycarbonate, UL94V-0 approved
Protection class IP54
Electrical connection Screw terminals 2.5 mm² or M12 plug
Electromagnetic compatibility EN61326-1 EN61326-2-3 Industrial Environment
FCC Part 15 ICES-003 ClassB
Working conditions -20...60 °C
Storage conditions -20...60 °C
1) for performance according to specification
(77 °F) 0...2 000 ppm: < ± (50 ppm +2 % of mv) mv = measured value
(14.7 psi) 0...5 000 ppm: < ± (50 ppm +3 % of mv)
, typ. 300 s (standard)
63
concentration [ppm] / 1 000) ppm/°C (-20...45 °C) (-4...113 °F)
2
< 1 mA
L
< 500 Ohm R
L
1)
< 5 min
(-4...140 °F) 0...100 % RH (non-condensing)
(-4...140 °F) 0...95 % RH (non-condensing)
= load resistance
L
Dimensions (mm/inch)
±0.3
90
mm
±0.11
3.54
EE820
“
5mm
0.2“
19mm
0.75“
v1.6 / Modification rights reserved
46mm
1.81“
FOR CONDUIT
INSTALLATION
CABLE GLAND M16x1.5
101mm
3.98“
3.17“
80.6mm
M12x1 Plug
Mating M12x1 connector for self assembly
is included in the scope of supply
233