Evikon PluraSens E2648-ETO User Manual

Ethylene oxide
Other names: epoxyethane, ethylene oxide, dimethylene oxide, oxacyclopropane,
1,2-Epoxy ethane. Proper IUPAC name: oxirane.
Highly reactive, toxic and flammable colourless gas.
Ethylene oxide is one of the most important raw materials used in large-scale
chemical production. It is used also as a sterylant and fungicide.
Chemical formula
C H O
2 4
Molar weight 44
Relative gas density (to air) 1.52
Conversion 1 ppm = 1.80 mg/m
Boiling point 10.7 °C
Low explosive limit (LEL), % vol in air 3
Upper explosive limit (UEL), % vol in air 100
Odour Pungent, ether-like
Odour threshold 430 ppm
Hazards Flammable.
Gas/air
Ethylene oxide is a slow poison with
carcinogenic, mutagenic, irritating, and
anaesthetic effect
Exposure
ingestion, (liquid), skin and/or eye
contact.
Exposure limits TWA 1 ppm
(OSHA)
STEL 5 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.)
Ethylene oxide is 1.5 times higher than air. It is very reactive, so it should be detected as
early as possible.
Calibration
E2648-ETO detectors have been calibrated by Manufacturer with standard gas
mixtures before delivery. Provided that the sensor is used under moderate
conditions,the recommended interval for field recalibration is 6 months. Please
contact your dealer for more information.
E2648-ETO_UM_EN
Specifications
Sensor type
Sampling method
Typical detection range
Maximum overload
Resolution / digital unit
Response time T90
Sensor lifetime
Calibration interval
3
Signal update
Load resistance
Digital interface
Power supply options
Power consumption
mixtures are explosive.
Analog outputs
Outputs assignment
Outputs scale width
routes are inhalation,
Cable connections
Enclosure
Dimensions
CE marking
Operating conditions
Relay option
Output relays
Default alarm setpoints
(set/release)
Other options
Remote probe
Evikon MCI OÜ
Tel. +372 733 6310
Rev 05.06.2020
electrochemical cell
diffusion
0...20 ppm 0...100 ppm
100 ppm 200 ppm
0.1 ppm 1 ppm
< 120 s <140s
> 2 years
6 months
every 1 second
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
11...30 VDC, 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
according to 2014/30/EU and EN61326-1 requirements
-20...+50 °C, 15...90% RH non-condensing, 0,9...1,1 atm
explosion safe areas, non-aggressive atmosphere
NOTE The sensor may exhibit sensitivity to carbon
monoxide, toluene and other organic compounds
2 × SPST relays (closing contact),
250 VAC / 30 VDC, 5 A max
defined by user
LOW: 2 ppm/ 1.6 ppm
within 5-95% of the
HIGHt 5 ppm/ 4 ppm
detection range
protection IP65, default cable length 3.0 m;
max height 80 mm, max diameter 65 mm
Teaduspargi 7/9, Tartu info@evikon.eu
50411 Estonia www.evikon.eu
Ethylene Oxide Detector-Transmitter
E2648-ETO
User Manual
PluraSens ®