Evikon PluraSens E2648-CO2-50K User Manual

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
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
dizziness, headache, visual and hearing
dysfunction, and unconsciousness within
a few minutes to an hour.
Exposure limits TWA 9000 mg/m
(Directive 2006/15/EC)
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 is heavier than air, it is recommended to locate the sensor not higher, than
2
the potential leakage. For air quality control place the sensor in the breathing zone.

Calibration

E2648 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.

Emergency mode

The current outputs of the E2648-CO2 may be programmed via Modbus
commands (register 255) to signal if the connection with the sensor is lost. The
signal may be set to 3.8 mA or 21.5 mA. See Annex 1 for more information.
E2648-CO2-50K_UM_EN

Specifications

Sensor type
Sampling method
Detection range
3
Resolution / digital unit
Accuracy
Response time T90
Sensor lifetime
Calibration interval
Signal update
Digital interface
Load resistance
oxygen, manifesting as
Power supply
Power consumption
Analog outputs
3
/5000 ppm
Outputs assignment
Output scale width
Cable connections
Enclosure
Dimensions
Operating Conditions
CE marking
Relay option
Output relays
Default alarm set-points
Other options
Ambient pressure
compensation
Remote probe
Evikon MCI OÜ
Tel. +372 733 6310
Rev 31.10.2019
optical (NDIR)
diffusion
0...50 000 ppm
100 ppm
± (70 ppm + 5% of reading)
up to 3 minutes
ca 10 years
up to 5 years
every 1 second
RS485, Modbus RTU protocol
no galvanic isolation
R < (Us - 2 V) / 22 mA for 4-20 mA
L
R > 250 kOhm for 0-10 V mode
L
11...30 VDC as standard,
options: 24 VAC or 90...265 VAC
< 2 VA
2 × 4-20 mA / 0-10 V, user settable
OUT1 2 gas; OUT2 2 gas
not below 10 × resolution
recommended: 20-100% of the detection range
screwless spring loaded terminals
die-cast aluminium, wall mount, protection class IP66
H120 × W125 × D57 mm
-25...+50 °C, 0...95% RH; pressure 0,9...1,1 atm;
non ATEXrated areas, non-aggressive atmosphere
according to 2014/30/EU and EN61326-1 requirements
2 × SPST relays (closing contact),
250 VAC / 30 VDC, 5 A max
according to user's preferences
(within 5-95% of the detection range)
in the range 0,5...2 bar of absolute pressure
protection IP65, shielded cable, default length 3.0 m
Teaduspargi 7, Tartu info@evikon.eu
50411 Estonia www.evikon.eu
Carbon Dioxide Detector-Transmitter
E2648-CO2-50K
User Manual
®
PluraSens