E2638-C2H4
Rev 21.06.2021
Specifications
Sensor type
Electrochemical cell
Sampling method
Diffusion
Typical detection range
0...10 ppm
0...200 ppm
0...1500 ppm
Max. overload
20 ppm
500 ppm
2000 ppm
Resolution / digital unit
0.1 ppm
1 ppm
1 ppm
Response time T80
< 60 s
Sensor lifetime
> 2 years
Calibration interval
6 months
Signal update
Every 1 second
Power supply
11...30 VDC,
24 VAC or 90...265 VAC as options
Power consumption
< 2 VA
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
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
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
-20...50°C, up to 100% RH,
0,9...1,1 atm;
Explosion-safe indoor areas
Avoid strong mechanical shock, vibrations, or EMI
Avoid exposure to corrosive gases
NOTE: The sensor may exhibit sensitivity to CO
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