E2638-NH3-P
Rev 29.07.2022
Specifications
Sensor type
Pellistor (catalytic bead)
Sampling method
Diffusion
Detection range
0...15%vol. (0…100%LEL NH
3
)
Resolution / digital unit
0.1%vol. or 1%LEL
Response time T90
< 10 s
Sensor lifetime
> 3 years
Calibration interval
6 months
Signal update
Every 1 second
Power supply
12...36 VDC (default),
24 VAC or 230 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
NOTE
analog output scale can be set according to customer's requirement
(e.g. 0…4%vol. NH
3
)
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
-20...+60 °C,
≤
95 % RH non-condensing, 0,9...1,1 atm
Explosion-safe areas; normal ambient oxygen level
Avoid strong mechanical shock, vibrations or EMI
Avoid exposure to corrosive gases or silicon containing products
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