Evikon PluraSens E2670-LEL Bedienungsanleitung

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

E2670-LEL Rev 15.03.2023

Modbus holding registers 22

Warranty 27

Manufacturer contacts 27

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

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

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

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

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

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

Molar weight

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

Odor

Odorless

Hazards

Flammable forms explosive mixtures with air.

Asphyxiant.

Exposure limits

Not established

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

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

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

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

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

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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