E2608-LEL
Rev 08.01.2021
Specifications
9
Detected gases
Acetylene, Butane, Hydrogen, Methane, Propane, etc
Sampling method
Diffusion
Sensor type
Metal oxide semiconductor
Catalytic (pellistor)
Typical detection range
0...100% LEL
0...100% LEL
Resolution / digital unit
0.1% LEL
1% LEL
Response time T90
ca. 60 s
≤10 s
Sensor lifetime
> 5 years
> 5 years
Calibration interval
12 months
6 months
Operating conditions
-40...+70 °C
-40 to +70°C
<95% RH non-condensing, 0,9...1,1 atm
explosion safe indoor areas,
Normal ambient oxygen level
Avoid strong mechanical shock, vibrations, or EMI
Avoid exposure to corrosive gases or silicone-containing products
NOTE! Transmitter with a catalytic type sensor is not suitable for acetylene
detection
Signal update
Every 1 second
Power supply options
11...30 VDC (default),
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
Output scale width
> 10 × resolution
Recommended: 20-100% of the detection range
Relay outputs
2 × SPST, max 5 A, 30 VDC / 250 VAC
Default alarm setpoints
RE1 (LOW): set 20% LEL; release 16% LEL
RE2 (HIGH): set 50% LEL; release 40% LEL
Cable connections
Screwless spring-loaded terminals
Enclosure
Light beige ABS, wall mount, protection class IP65