Carbon dioxide
Synonyms: Carbonic acid gas, Carbonic anhydride, Carbon (IV) oxide; Dry ice (in
solid state).
Chemical formula
CO
2
Molar weight
44
Relative gas density (to air)
1.52
Conversion
1 ppm = 1.80 mg/m
3
Boiling point
Sublimes
Flammability
Nonflammable
Odour
Odourless
Hazards
Dusts of various metals (Mg, Zr, Ti, Al,
Cr, Mn) are ignitable and explosive when
suspended in carbon dioxide.
In concentrations up to 1% (10 000
ppm), it will make some people feel
drowsy and give the lungs a stuffy
feeling. Concentrations of 7% to 10%
(70 000 to 100 000 ppm) may cause
suffocation, even in the presence of
sufficient
oxygen,
manifesting
as
dizziness, headache, visual and hearing
dysfunction, and unconsciousness within
a few minutes to an hour.
Exposure
limits
(Directive 2006/15/EC)
TWA
9000 mg/m
3
/5000 ppm
STEL
Not specified
Conversion of ppm to mg/m
3
is calculated for 25°C and 1 atm.
Indoor air quality in nonresidential buildings
CO2 level
Description
< 450 ppm
High quality (fresh air)
450-600 ppm
Medium quality
600-1000 ppm
Moderate quality
> 1000 ppm
Low quality
Installation guidelines
(See Installation and connections section for general information.)
Since CO
2
is heavier than air, it is recommended to locate the sensor not higher, than
the potential leakage. For air quality control place the sensor in the breathing zone.
Calibration
E2608-CO2 series devices have been calibrated by Manufacturer with standard
gas mixtures before delivery. Provided that the sensor is used under moderate
conditions, field recalibration is recommended every 5 years. Please contact your
dealer for more information.
Maintenance
Do not perform any maintenance operation with the power on.
Clean the device with soft damp cloth. Do not use any abrasive cleaning agents. Do
not immerse the device into water or any cleaning media.
Delivery set
–Detector-transmitter E2608 (wall mount or duct mount version)
– Mounting accessories:
4 cross-shaped mounting lug with screws and 4 screws with plastic dowels
for wall mount version
rubber flange for duct mount version
fixing clamp for remote probe versions
E2608-CO2-10K_UM_EN
Rev 11.07.2019
Specifications
Sensor type
optical (NDIR)
Sampling method
diffusion
Detection range
0...10 000 ppm
Resolution / digital unit
1 ppm
Accuracy
± (50 ppm + 3% of reading)
in the range 300...5000 ppm
Response time T90
ca. 2 minutes
Sensor lifetime
ca. 10 years
Calibration interval
up to 5 years
Signal update
every 1 second
Power supply options
11...30 VDC, 24 VAC
or 90...265 VAC (with mains power unit)
Power consumption
< 2 VA
Analog outputs
2 × 4-20 mA / 0-10 V, user settable
Outputs assignment
OUT1 2 gas; OUT2 2 gas
Output scale width
> 10 × resolution
Recommended: 20-100% of the detection range
Digital interface
RS485, Modbus RTU protocol
no galvanic isolation
Load resistance
R
L
< (Us - 2 V) / 22 mA for 4-20 mA
R
L
> 250 kOhm for 0-10 V mode
Relay otputs
2 × SPST, max 5 A, 30 VDC / 250 VAC
Alarm setpoints
Determined by user within 5-95% of the detection range
Cable connections
screwless spring loaded terminals
Enclosure
light grey ABS, wall or duct mount, protection class IP65
Dimensions
H85 × W82 × D55 mm
Operating conditions
0...+50 °C, 0...85 %RH; atmospheric pressure ±10%*
non ATEXrated areas, non-aggressive atmosphere
CE marking
according to 2014/30/EU and EN61326-1 requirements
Other options
*Ambient pressure
compensation option
in the range 0,5...2 bar of absolute pressure
Warranty
This product is warranted to be free from defects in material and workmanship for a
period of one year from the date of original sale. During this warranty period
Manufacturer will, at its option, either repair or replace product that proves to be
defective. This warranty is void if the product has been operated in conditions outside
ranges specified by Manufacturer or damaged by customer error or negligence or if
there has been an unauthorised modification.
Evikon MCI OÜ
Teaduspargi 7, Tartu
info@evikon.eu
Tel. +372 733 6310 50411 Estonia
www.evikon.eu
PluraSens
®
Carbon Dioxide Detector-Transmitter
E2608-CO2-10K
User Manual
