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ABB EasyLine EL3060 Series User Manual

ABB EasyLine EL3060 Series
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116 EL3060 CONTINUOUS GAS ANALYZERS | OI/EL3060-EN REV. A
Inspection
Regular inspection
Proceed in accordance with the checklist "Checking the installation" (see
page 44).
Checking the seal integrity of the gas feed paths
The seal integrity of the sample gas feed path and, if applicable, the refer-
ence gas feed path should be checked during operation at least once a year.
The seal integrity of the gas feed path must always be checked after the gas
feed path inside the gas analyzer has been opened (see below).
If measured values are output slowly during operation (e.g. after feed in of
the test gas) or implausible measured values are obtained, a leak in the
sample gas feed path is a possible cause.
A simple procedure for testing the seal integrity of the gas feed paths is
described in the section "Checking the seal integrity of the gas feed paths"
(see page 117).
Measures taken after opening the gas paths inside the gas analyzer
All components of the case of the control unit and the analyzer unit
EL3060-Uras26 must be completely bolted together and locked against ro-
tation with the socket-head hex screws.
If the gas feed path or reference gas path inside the gas analyzer has been
opened, the seal integrity should be tested with helium at a leak rate of
< 2 × 10
4
hPa l/s. As an alternative to the helium leak test, the pressure drop
method described in the section "Checking the seal integrity of the gas feed
paths" (see page 117) can be used. In this respect, the test pressure is in-
creased to p
e
400 hPa (= 400 mbar) and the test duration to 15 minutes.
The maximum excess pressure p
e
= 500 hPa (= 500 mbar).
Initial purging of the gas feed paths inside and outside the gas analyzer is
required before the power supply is switched on. A potentially explosive
gas/air mixture in the gas feed paths is thereby removed.
Purge gas for non-flammable sample gas Clean instrument air from
non-hazardous areas
Purge gas for flammable sample gas Nitrogen
Purge gas volume 5x volume of the gas feed paths
Purge gas flow approx. 30 l/h
Purging time at least 3 min
The purge gas for purging the EL3060-Uras26 analyzer unit may not contain
any fractions of the sample components.
Reseal cable glands after opening
If the pressure-proof cable glands, through which the data transmission
cable and the 24 VDC connecting cable are routed to the flameproof cylinder
of the EL3060-Uras26 analyzer unit, have been opened, the external nuts
must be screwed tight with a torque wrench (size 20); tightening torque =
17 Nm.

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ABB EasyLine EL3060 Series Specifications

General IconGeneral
BrandABB
ModelEasyLine EL3060 Series
CategoryMeasuring Instruments
LanguageEnglish

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