Evikon PluraSens E2638-VOC User Manual

Volatile Organic Compounds

Highly volatile organic liquids. The definitions of VOC may vary depending on
application field and country. E2638-VOC is intended to detect vapours of solvents
(acetone, benzene, ethanol, ethyl acetate, toluene, xylenes etc.
See Annex 2 for more information on the properties of various gases.
Installation guidelines
(See Installation and connections section for general information.)
Solvent vapours are heavier than air and tend to sink. Consider, if the vapours are
heated or not, if the detector is used for fire safety (LEL range) or air quality control
(0...100 to 0...1000 ppm range) etc.

Calibration

E2638-VOC detectors-transmitters have been calibrated by Manufacturer with
standard gas mixtures before delivery. Provided that the sensor is used under
moderate conditions, field recalibration is recommended once a year. Please
contact your dealer for more information.
E2638-VOC_UM_EN

Specifications

Sampling method diffusion
Sensor type metal oxide semiconductor
Default calibration toluene
Typical detection range 0...100% LEL
Resolution / digital unit 0.1% LEL
Response time T90 < 120 s
Sensor lifetime > 5 years
Calibration interval 12 months
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
-30...+70 °C; <95% RH non-condensing, 0,9...1,1 atm
explosion safe areas; normal ambient oxygen level
Operating Conditions
avoid exposure to corrosive gases or silicone
containing products
Relay option
2 × SPST relays (closing contact),
Output relays
250 VAC / 30 VDC, 5 A max
Alarm setpoints RE1 (LOW): 20/16 % LEL;
(set/release) RE2 (HIGH): 50/40% 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
up to 0...1000 ppm
1 ppm
RE1 (LOW): 100/80 ppm;
RE2 (HIGH): 300/240 ppm
(for 0...500 ppm range)
Solvent Vapours Detector-Transmitter
E2638-VOC
User Manual
info@evikon.eu
www.evikon.eu
PluraSens ®