Evikon PluraSens E2638-LEL User Manual

Combustible gases
E2638-LEL detector-transmitter is sensitive to light hydrocarbon gases (acetylene,
methane, propane, butane) and hydrogen.
See Annex 2 for more detailed information concerning the properties of the
detected gases.
NOTE Transmitter with catalytic type sensor is not suitable for acetylene detection.
Installation guidelines
(See Installation and connections section for general information.)
For gases lighter than air install the sensor higher than potential leakage/generation
source or near the ceiling. Combustible gases lighter than air are hydrogen (0,07 of air
density), methane (0,55 of air density) and acetylene (0.90 of air density).
Propane and butane are heavier than air (1.55 and 2.0 of air density respectively) and
tend to sink. It is recommended to place the sensor lower than potential leakage or
generation source.
Calibration
E2638-LEL devices have been calibrated by Manufacturer with standard gas
mixtures before delivery. Provided that the sensor is used under moderate
conditions, the recommended recalibration interval for metal oxide sensor is 12
months. Catalytic sensors are more sensitive to the environment and require field
recalibration every 3...6 months. Please contact your dealer for more information.
E2638-LEL_UM_EN
Specifications
Detected gases acetylene, butane, hydrogen, methane, propane etc
Sampling method diffusion
Sensor type metal oxide semiconductor
Typical detection range 0...100% LEL
Resolution / digital unit 0.1% LEL
Response time T90 ca. 60 s
Sensor lifetime > 5 years
Calibration interval 12 months
-30...+70 °C
<95 % RH non-condensing, 0,9...1,1 atm
Operating conditions explosion safe areas; normal ambient oxygen level
avoid exposure to corrosive gases or silicon containing
products
Signal update every 1 second
11...30 VDC, 24 VAC
Power supply options
or 90...265 VAC (with mains power unit)
Power consumption < 2 VA
Analog outputs 2 × 4-20 mA / 0-10 V, user settable
OUT1 2 gas; OUT2 2 gas
Outputs assignment
NOTE for LCD version only output 1 is available
R < (Us - 2 V) / 22 mA for 4-20 mA
L
Load resistance
R > 250 kOhm for 0-10 V mode
L
Digital interface RS485, Modbus RTU protocol; no galvanic isolation
Enclosure grey ABS, wall mount, protection class IP65
H90 × W145 × D55 mm
Dimensions
(overall dimensions H140 × W145 × D55 mm)
CE marking according to 2014/30/EU and EN61326-1 requirements
Relay option
2 × SPST relays (closing contact),
Output relays
250 VAC / 30 VDC, 5 A max
RE1 (LOW): set 20% LEL; release 16% LEL
Default alarm setpoints
RE2 (HIGH): set 50% LEL; release 40% LEL
Signalling options
Visual red and green LEDs
Acoustic alarm buzzer 85 dB
LCD indicator 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
protection IP65, default cable length 3.0 m;
Remote probe
max height 80 mm, max diameter 65 mm
Evikon MCI OÜ Teaduspargi 7/9, Tartu
Tel. +372 733 6310 50411 Estonia
Rev 25.05.2020
catalytic (pellistor)
0...100% LEL
1% LEL
8 s
> 2 years
3...6 months
-20 to +60°C
Combustible Gases
Detector-Transmitter
E2638-LEL
User Manual
info@evikon.eu
www.evikon.eu
PluraSens ®