Oxygen
Colourless gas, one of the main components of the air. Oxigen is necessary for
breathing of humans and animals, oxygen deficiency is harmful for health.
Strong oxidizer, sustains combustion.
Chemical formula
O
2
Molar weight
32
Relative gas density (to air)
1.1
Conversion
1 ppm =1.31 mg/m
3
Boiling point
-183°C
Odour
Odourless
Hazards
Strong oxidant. May reacts with
combustible and reducing materials
(oils, solvents etc), causing fire and
explosion hazard. Oxygen enriched
atmospheres (>22% O
2
) present a
significant fire and explosion risk.
Oxygen deficiency in air may lead to
loss of concentration, reduced
coordination, fatigue. At very reduced
levels fainting and death may occur.
Breathing of oxygen at increased
concentrations may lead to hyperoxia
(seizures, respiratory problems,
disorientation).
Normal atmosphere concentration
20.8...21%
Deficiency threshold (OSHA)
19.5%
Immediately life-treatening concentration <10%
Exposure limits
not established
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.)
For air quality control install the detector on in the breathing zone. To control the
absence of oxygen (e.g. while working under inert atmosphere) place the sensor in the
working area.
Calibration
E2618-O2-L transmitters have been calibrated with standard gas mixtures before
delivery. Provided that the sensor is used under moderate conditions, no field
recalibration is required. 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-O2-L_UM_EN
Rev 16.07.2019
Specifications
Sensor type
optical (based on fluorescence quenching)
Sampling method
diffusion
Typical detection range
0...25% vol
Resolution / digital unit
0.01 % vol
Response time T90
< 30 s
Sensor lifetime
>5 years
Calibration interval
maintenance free under moderate operating conditions
without extreme fluctuations
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 VD 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
-30...60 °C, 15...90 %RH, atmospheric pressure ±10%
non ATEXrated areas, non-aggressive atmosphere
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
®
Fluorescence-Based
Oxygen Transmitter
E2618-O2-L
User Manual
