Carbon monoxide
Colourless, odourless, and tasteless gas. Highly toxic.
Synonyms: Carbonous oxide, Carbon(II) oxide, Flue gas, Monoxide
Chemical formula
CO
Molar weight
28
Relative gas density (to air)
0.97
Conversion
1 ppm = 1.15 mg/m
3
Boiling point
−191.5 °C
Low explosive limit (LEL), % vol in air
12.5
Upper explosive limit (UEL), % vol in air
74
Odour
Odourless
Hazards
Highly toxic. Mild poisoning causes
lightheadedness, confusion, headache,
dizziness, and flu-like effects. Larger
exposures can lead to toxicity of the
CNS and heart, and death. After acute
poisoning, long-term problems may
occur. CO also have negative effects
on a baby if exposed during
pregnancy. Chronic exposure to low
levels can lead to depression,
confusion, and memory loss.
Exposure limits
(NIOSH)
TWA
40 mg/m
3
/35 ppm
IDLH
1380 mg/m
3
/1200 ppm
Conversion of ppm to mg/m
3
is calculated for 25°C and 1 atm.
Installation guidelines
(See Installation and connections section for general information.)
Carbon monoxide has practically the same density as air and spreads evenly in the
room. Install the sensor in a proximity to possible leakage or generation source, taking
into consideration the temperature of the gas, the air currents in the room etc.
Calibration
E2618-CO transmitters 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 6 months. 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
–Transmitter E2618 (wall mount or duct mount version)
– Mounting accessories:
4 screws with plastic dowels for wall mount version
rubber flange for duct mount version.
fixing clamp for remote probe version
E2618-CO_UM_EN
Rev 16.07.2019
Specifications
Sensor type
electrochemical cell
Sampling method
diffusion
Detection range
0...1000 ppm
Maximum overload
2000 ppm
Resolution / digital unit
1 ppm
Response time T90
< 30 s
Repeatability
< ± 5%
Sensor lifetime
> 6 years
Calibration interval
6 months
Signal update
every 1 second
Load resistance
R
L
< (Us - 2 V) / 22 mA for 4-20 mA
R
L
> 250 kOhm for 0-10 V mode
Digital interface
RS485, Modbus RTU protocol; no galvanic isolation
Power supply options
11...30 VDC or 24 VAC
Power consumption
< 2 VA
Analog outputs
2 × 4-20 mA / 0-10 V, user settable
Outputs assignment
OUT1 2 gas; OUT2 2 gas
NOTE For LCD version only OUT1 is available.
Cable connections
screwless spring loaded terminals
Enclosure
grey ABS, wall or duct mount, protection class IP65
Dimensions
H82 × W80 × D55 mm
CE marking
according to 2014/30/EU and EN61326-1 requirements
Operating conditions
-20...+50 °C, 15...90 %RH, atmospheric pressure
non ATEXrated areas, non-aggressive atmosphere
NOTE The sensor may exhibit sensitivity to acetylene,
etylene, hydrogen and nitric oxide
LCD option
Operating temperature
0...+50 °C
Display dimensions
72 × 36 mm
Number of digits
3.5 7-segment
Character height
14 mm
Other features
Backlight
Other options
Remote probe
Protection IP65, default cable length 3.0 m;
max height 80 mm, max diameter 65 mm
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
Tel. +372 733 6310
50411 Estonia
www.evikon.eu
PluraSens
®
Carbon Monoxide Transmitter
E2618-CO
User Manual
