Evikon E2658-CO User Manual

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
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 TWA 40 mg/m
(NIOSH)
IDLH 1380 mg/m
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
E2658-CO detector-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.
E2658-CO_UM_EN
Specifications
Sensor type
Sampling method
Detection range
Maximum overload
3 Resolution / digital unit
Response time T90
Repeatability
Sensor lifetime
Calibration interval
Signal update
Power supply options
Power consumption
Analog outputs
Load resistance
Digital interface
Outputs assignment
Enclosure
3 /35 ppm Cable glands
Dimensions
3
/1200 ppm
Protection
ATEX Approvals
CE marking
Operating conditions
Relay option
Output relays
Default alarm set-points
Evikon MCI OÜ
Tel. +372 733 6310
Rev 04.07.2019
electrochemical cell
diffusion
0...1000 ppm
2000 ppm
1 ppm
< 30 s
< ± 5%
< 6 years
6 months
every 1 second
11...30 VDC, 24 VAC
or 90...265 VAC (with mains power unit)
< 2 VA
2 × 4-20 mA / 0-10 V, user settable
R < (Us - 2 V) / 22 mA for 4-20 mA
L
R > 250 kOhm for 0-10 V mode
L
RS485, Modbus RTU protocol
no galvanic isolation
OUT1 2 gas; OUT2 2 gas
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
Flameproofepd 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
-20...+50 °C, 0...90 %RH, atmospheric pressure ±10%
Explosion-safe zones and ATEX Zones 2 and 22,
non-aggressive atmosphere
NOTE The sensor exhibits considerable sensitivity to
acetylene, etylene, hydrogen and nitric oxide
2 × SPST relays (closing contact),
250 VAC / 30 VDC, 5 A max
RE1 (LOW): set 25; release 20 ppm
RE2 (HIGH): set 35; release 28 ppm
Teaduspargi 7, Tartu info@evikon.eu
50411 Estonia www.evikon.eu
Flame Proof
Carbon Monoxide Detector-Transmitter
E2658-CO
User Manual
®
PluraSens