A-BEasyLine Continuous Gas Analyzers Models EL3020, EL3040 Software Version 3.3

ATTENTION 

The gas analyzer uses hydrogen as a combustion gas! 

All the information and instructions contained in this operator's manual 

must be complied with without fail to ensure safe operation of the gas 

analyzer! 

Measures of the manufacturer 

The following measures ensure that the enrichment of combustion gas or 

an explosive mixture of combustion gas and ambient air cannot occur 

inside the gas analyzer during normal operation: 

 The seal integrity of the combustion gas feed path is checked for a 

leakage rate of < 1 × 10–4 hPa l/s before delivery. 

 The combustion gas/air mixture (before and after the ignition point) is 

diluted in the detector with compressed air. 

 The combustion gas feed is not connected to the supply during startup until the internal nominal pressures have been set. 

 The combustion gas feed is switched off if the internal nominal 

pressures cannot be set during the ignition phase (e.g. because of 

insufficient compressed air or combustion air feed). 

 The combustion gas feed is switched off after several unsuccessful 

ignition attempts. 

 If the flame goes out during operation the combustion gas feed is 

switched off if the following ignition attempts are unsuccessful. 

The interior of the gas analyzer is not assigned to an (explosion 

protection) zone; no explosive gas mixture can escape from it to the 

outside. 

Conditions to be complied with by the end user 

The end user must comply with the following prerequisites and conditions 

to ensure safe operation of the gas analyzer: 

 The gas analyzer may be used for the measurement of flammable 

gases provided that the flammable portion does not exceed 

15 vol.% CH4 or C1 equivalents. 

 The relevant safety regulations for working with flammable gases 

must be complied with. 

 The gas connection diagram (see page 64) must be complied with 

when connecting the combustion gas and combustion air. 

 The combustion gas feed path in the gas analyzer may not be 

opened! The combustion gas feed path can become leaky as a result! 

Escaping combustion gas can cause fires and explosions, also 

outside the gas analyzer! 

 If the combustion gas feed path in the gas analyzer has been opened, 

however, it must always be checked for seal integrity (see page 118) 

with a leak detector after it has been sealed again (leakage rate 

< 1 × 10–4 hPa l/s). 

 The seal integrity of the combustion gas line (see page 116) outside 

the gas analyzer and the combustion gas feed path (see page 118) in 

the gas analyzer must be checked on a regular basis. 

 The maximum combustion gas flow (see page 30) may not be 

exceeded. 

 The maximum pressures of combustion gas and combustion air (see 

page 30) may not be exceeded. 

 The combustion gas flow rate must be limited to a maximum of 

10 l/h of H2 or 25 l/h of H2/He mixture. For this purpose, the end user 

has to provide suitable measures (see page 30) outside the gas 

analyzer. 

 A shut-off valve (see page 30) must be installed in the combustion 

gas supply line to increase the safety in the following operating 

states: 

 Shutting down the gas analyzer, 

 Failure of the instrument air supply, 

 Leakage in the combustion gas feed path inside the gas analyzer. 

This shut-off valve should be installed outside the analyzer house in 

the vicinity of the combustion gas supply (cylinder, line). 

 If there is no automatic shut-off of the combustion gas supply to the 

gas analyzer in case of an instrument supply failure, a visible or 

audible alarm must be triggered (see page 129). 

 When measuring flammable gases, it must be made sure that in case 

of a failure of the instrument air supply or of the analyzer module itself 

the sample gas supply to the analyzer module is shut off and the 

sample gas path is purged with nitrogen. 

 The unobstructed exchange of air with the environment must be 

possible around the gas analyzer. The gas analyzer may not be 

directly covered. The openings in the housing towards the top and at 

the side may not be closed. The distance to laterally adjacent built-in 

components must be at least 4 mm. 

 If the gas analyzer is installed in a closed cabinet, adequate ventilation of the cabinet must be provided (at least 1 change of air per 

hour). The distance to adjacent built-in components towards the top 

and at the side must be at least 4 mm

Scope of Supply and Delivery 

Scope of Supply and Delivery 

 Gas analyzer model EL3020 (19-inch housing) or model EL3040 

(wall-mount housing) 

 Screwed fittings with tubing connectors for the connection of flexible 

tubes 

 Mains lead (see page 88), length 5 m 

 Mating plugs (socket housing) for the electrical connection of the 

I/O modules (attached to the terminals of the I/O modules) 

 Screwdriver (required for attaching the electric lines in the mating