Evikon PluraSens E2670-LEL User manual

PluraSens®
Flameproof
Combustible Gas Detector-Transmitter
E2670-LEL
User Manual

E2670-LEL Rev 15.03.2023
Table of contents
Acetylene 3
Butane 4
Hexane 5
Hydrogen 6
Methane 7
Octane 8
Propane 9
Specifications 10
Product description 12
Safety requirements 12
Operating conditions 13
Installation guidelines 13
Mounting dimensions 15
Electrical connections 16
Correct and incorrect cabling for 24 VAC 18
Operation 19
Maintenance 19
Calibration 19
Delivery setDetector-transmitter E2670 20
Order code for E2670-LEL options 20
Configuring 21
Return to default settings 21
Modbus RTU Communication 22
RS485 communication interface 22
Communication parameters 22
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E2670-LEL Rev 15.03.2023
Modbus holding registers 22
Warranty 27
Manufacturer contacts 27
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E2670-LEL Rev 15.03.2023
Acetylene
A colorless flammable gas, lighter than air. Mixtures with air are explosive. It results from
the interaction of calcium carbide with water. In industrial production, acetylene is mainly
manufactured by the pyrolysis of light hydrocarbons.
Acetylene is widely used for welding and cutting of metals. The usage of acetylene as a
feedstock in the chemical industry declines due to cost and environmental considerations.
Synonyms/Trade Names: Ethine, Ethyne.
Chemical formula
HC≡CH
Molar weight
26
Relative gas density (to air)
0,90
Conversion*
1 ppm= 1.06 mg/m3
Boiling point
-84 °C
Low explosive limit (LEL), % vol. in air
2.3* (2.5**)
Upper explosive limit (UEL), % vol. in air
100
Odor
Odorless or with a faint ethereal smell if pure. The
commercial-grade may have a garlic-like smell due to
impurities.
Hazards
Highly flammable.
Gas/air mixtures are explosive. Forms explosive
acetylide compounds with copper, mercury, silver &
brasses (containing more than 66% copper).
Asphyxiant. Non-toxic, but, when generated from
calcium
carbide, it can contain toxic impurities such as traces of
phosphine and arsine.
Exposure
limits (NIOSH)
REL C
2662 mg/m3 /2500 ppm
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E2670-LEL Rev 15.03.2023
Butane
A colorless flammable gas that is heavier than air. The term “butane” is used for any of two
structural isomers (n-butane or iso-butane, with unbranched and branched-chain
respectively) or for their mixture. Occurs in light petroleum fractions.
Butane is used mainly as a fuel and as a feedstock in organic synthesis. It is applied also
as a propellant in aerosol sprays and may be used as an ozone-friendly refrigerant.
Mixtures of butane with propane and other hydrocarbons are referred to as LPG (liquefied
petroleum gas).
Chemical formula
n-butane
CH3CH2CH2CH3
iso-butane
CH3CH(CH3)CH3
Molar weight
58
Relative gas density (to air)
2.0
Conversion*
1 ppm = 2.38 mg/m3
Boiling point
-0.56 °C
−11.7 °C
Low explosive limit (LEL), % vol. in air
1.4* (1.6**)
1.5* (1.8**)
Upper explosive limit (UEL), % vol. in air
8.4
9.6
Odor
Gasoline-like odor
Hazards
Highly flammable.
Inhalation of butane can cause euphoria, drowsiness,
narcosis, asphyxia, cardiac arrhythmia, fluctuations in
blood pressure, and temporary memory loss, when
abused directly from a highly pressurized container,
and
can result in death from asphyxiation and ventricular
fibrillation.
Exposure limits
(NIOSH)
TWA
1900 mg/m3 /800 ppm
Not established
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E2670-LEL Rev 15.03.2023
Hexane
A colorless flammable gas that is heavier than air. Hexane is a constituent component of
gasoline. It is widely used in solvents as it is cheap, relatively safe and largely unreactive. It
is also used as an industrial cleaner and degreaser and is an ingredient in many consumer
products.
Chemical formula
C6H14
Molar weight
86.18
Relative gas density (to air)
2.97
Conversion*
1 ppm = 3.52 mg/m3
Boiling point
68.7 °C
Low explosive limit (LEL), % vol. in air
1.0* (1.2**)
Upper explosive limit (UEL), % vol. in air
7.5
Odor
Petroleum-like odor
Hazards
Highly flammable.
Inhalation of hexane can cause irritation of respiratory
tract, cough, mild depression, cardiac arrhythmias.
Exposure limits
TWA
1800 mg/m3 /500 ppm
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E2670-LEL Rev 15.03.2023
Hydrogen
A colorless, odorless, flammable gas that is much lighter than air. Mixtures with air are
explosive. Results from the interaction of acids, bases, and water with active metals and
from the electrolysis of aqueous solutions. In industrial production, the main source of
hydrogen is hydrocarbons.
Chemical formula
H2
Molar weight
2
Relative gas density (to air)
0.07
Conversion*
1 ppm = 0.0818 mg/m3
Boiling point
−252.88 °C
Low explosive limit (LEL), % vol. in air
4.0
Upper explosive limit (UEL), % vol. in air
75
Odor
Odorless
Hazards
Flammable forms explosive mixtures with air.
Asphyxiant.
Exposure limits
Not established
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E2670-LEL Rev 15.03.2023
Methane
A colorless flammable gas, the main component of natural gas, marsh gases. Methane
results from bacterial decomposition of plant and animal matter (landfill gas).
Methane is widely used as a fuel and chemical feedstock.
Synonyms: Marsh Gas, Natural Gas, Carbon tetrahydride, Hydrogen carbide.
Chemical formula
CH4
Molar weight
16
Relative gas density (to air)
0.55
Conversion*
1 ppm = 0.65 mg/m3
Boiling point
−161.49 °C
Low explosive limit (LEL), % vol. in air
4.4* (5.0**)
Upper explosive limit (UEL), % vol. in air
15
Odor
Odorless when pure. Methane used in the kitchens
contains an odorant
Hazards
Highly flammable, mixtures with air are explosive.
Asphyxiant.
Exposure limits
Not established
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E2670-LEL Rev 15.03.2023
Octane
A colorless flammable gas that is heavier than air. Octane is a component of gasoline
(petrol).
Chemical formula
C8H18
Molar weight
114.23
Relative gas density (to air)
3.86
Conversion*
1 ppm = 4.67 mg/m3
Boiling point
125.6 °C
Low explosive limit (LEL), % vol. in air
1.0
Upper explosive limit (UEL), % vol. in air
6.5
Odor
Gasoline-like odor
Hazards
Highly flammable.
Inhalation of octane may cause irritation of respiratory
tract, depression, and pulmonary edema.
Exposure limits (NIOSH)
350 mg/m3 /75 ppm
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E2670-LEL Rev 15.03.2023
Propane
A colorless flammable gas that is heavier than air. It occurs in light petroleum fractions.
Propane is used mainly as a fuel and as a feedstock in organic synthesis. It is applied also
as a propellant in aerosol sprays and may be used as an ozone-friendly refrigerant.
Mixtures of propane with butane and other hydrocarbons are referred to as LPG (liquefied
petroleum gas).
Chemical formula
CH8CH2CH8
Molar weight
44
Relative gas density (to air)
1.55
Conversion*
1 ppm =1.80 mg/m3
Boiling point
−42 °C
Low explosive limit (LEL), % vol. in air
1.7* (2.1**)
Upper explosive limit (UEL), % vol. in air
9.5
Odor
Odorless when pure. Commercially available propane for
fuel purposes may contain odorant (“gas smell”).
Hazards
Highly flammable, mixtures with air are explosive.
Asphyxiant. May cause dizziness, confusion, excitation
when inhaled.
Exposure limits
(NIOSH)
TWA
1800 mg/m3 /1000 ppm
IDLH
2100 ppm [10%LEL]
Conversion of ppm to mg/m3 is calculated for 25°C and 1 atm.
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