E2638-CO2
Rev 10.05.2021
Specifications
Sensor type
Optical (NDIR)
Dual beam NDIR (optional)
Sampling method
Diffusion
Ordering code
10K
50K
50KN
Detection range
0...10 000 ppm
0...5 %vol.
0...50000 ppm
Resolution / digital unit
1 ppm
0.01 %vol.
0.2% FS
Accuracy
±(50 ppm + 3% of
reading)
within 300...5000
ppm
±(70 ppm + 5%
of reading)
±1% of FS range below 25% of range
±2% of detection range for readings
between 25% and 50% of range
±5% of FS range above 50% of range
Response time T90
ca. 2 minutes
Up to 3 minutes
T50 ≤ 20 s; T90 ≤ 60 s
Sensor lifetime
ca. 10 years
> 2 years
Calibration interval
Up to 5 years
No field recalibration
Signal update
Every 1 second
Power supply
11...30 VDC,
24 VAC or 90...265 VAC as options
Power consumption
< 2 VA
Analog outputs
2 × 4-20 mA / 0-10 V, user settable
Outputs assignment
OUT1 gas; OUT2 gas
NOTE! for LCD version only output 1 is available
Output scale width
> 10 × resolution
Recommended: 20-100% of the detection range
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
Enclosure
Grey ABS, wall mount, protection class IP65
Dimensions
H90 × W145 × D55 mm
(overall dimensions H140 × W145 × D55 mm)
CE marking
According to 2014/30/EU and 2014/35/EU, EN 50491-4-1:2012
EN 61000-6-3:2020, EN 61326-1:2013(EMC, emissions)
EN 61000-6-1:2019, EN 61000-6-2:2019(EMC, Immunity)
EN 60079-29-1:2016, EN 60079-29-2:2015 and EN 60079-29-3:2014
Operating conditions
Explosion-safe areas; pressure 0,9...1,1 atm;
Non-aggressive atmosphere without condensation;
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