Evikon E2658-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 oxygen, manifesting as
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
E2658 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 E2658-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.
E2658-CO2-50K_UM_EN
Specifications
Sensor type
Sampling method
Detection range
Resolution / digital unit
3
Accuracy
Response time T90
Signal update
Sensor lifetime
Calibration interval
Power supply options
Power consumption
Analog outputs
Outputs assignment
Digital interface
Load resistance
Cable connections
Enclosure
3
/5000 ppm
Cable gland
Dimensions
Protection
ATEX Approvals
Operating conditions
CE marking
Relay option
Output relays
Alarm set-points
Other options
Ambient pressure
compensation
Evikon MCI OÜ
Tel. +372 733 6310
Rev 30.10.2019
optical (NDIR)
diffusion
0...50 000 ppm
100 ppm
± (70 ppm + 5% of reading)
up to 3 minutes
every 1 second
ca 10 years
up to 5 years
11...30 VDC, 24 VAC
or 90...265 VAC (with mains power unit)
< 2 VA
2 × 4-20 mA / 0-10 V, user settable
OUT1 2 gas; OUT2 2 gas
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
screwless spring loaded terminals
Grey die-cast aluminium, wall mount, IP66
M25 for SWA cable or steel conduit Ø10...17 mm
H120 × W125 × D57 mm
flameproof, ATEX: II 2 GD, Ex ed IIC T4 Gb
Enclosure:
ATEX / IECEx DEMKO 13 ATEX 1327771U
II 2 G Ex c IIC Gb II 2 D Ex tb IIIC Db IP66
Glands:
ATEX / IECEx II2G Ex e II IP68
IBExU08ATEX 1063 X Ex II 1D Ex tD A20 IP 6x Ex
-25...+50 °C*, 0...95 %RH; atmospheric pressure ±10%
Explosion-safe zones and ATEX Zones 2 and 22,
non-aggressive atmosphere
Flameproofed to IEC EN 60079-1
Increased safety to IEC EN 60079-7
EMC Emissions to EN 61000-6-3, EN 61326-1
EMC Immunity to EN 61000-6-1, EN 61000-6-2
2 × SPST relays (closing contact),
250 VAC / 30 VDC, 5 A max
Determined by user within 5-95% of the detection range
in the range 0,5...2 bar of absolute pressure
Teaduspargi 7, Tartu info@evikon.eu
50411 Estonia www.evikon.eu
Flame Proof
Carbon Dioxide Detector-Transmitter
E2658-CO2-50K
User Manual
®
PluraSens