Emerson HAS8xE-IM-ATEX Manual De Usuario
MLT 2 / BINOS
100 F
Emerson Process Management Manufacturing GmbH & Co. OHG
4 - 3
ATEX Instruction Manual
HAS8xE-IM-ATEX
January 2004
January 2004
4-4-3
Leakage Test
The leakage of the enclosure has to be
measured with an overpressure of 25 mbar
applied to the pressurized enclosure. To do
this the following steps have to be
performed:
•
measured with an overpressure of 25 mbar
applied to the pressurized enclosure. To do
this the following steps have to be
performed:
•
Make sure the modifications as
described in the section 4-4-1are still
existent.
described in the section 4-4-1are still
existent.
•
Apply an overpressure of 25 mbar to
the analyzer enclosure and take the
reading of the flow meter.
the analyzer enclosure and take the
reading of the flow meter.
The test is considered to be satisfacotry if
the measured value is acceptable
compared to the following values.
Acceptable flow values are:
• all analyzers: 3 l/minute maximum
the measured value is acceptable
compared to the following values.
Acceptable flow values are:
• all analyzers: 3 l/minute maximum
4-4-2
Overpressure Test
A pressure of 37.5 mbar (= 1.5 times the
maximum overpressure specified) has to be
applied to the pressurized enclosure. To do
this the following has to be performed:
•
maximum overpressure specified) has to be
applied to the pressurized enclosure. To do
this the following has to be performed:
•
Carefully apply a pressure of 37.5 mbar
to the enclosure and hold this pressure
for a period of 2 minutes +/- 10 seconds.
to the enclosure and hold this pressure
for a period of 2 minutes +/- 10 seconds.
The test is considered to be satisfactory if
no permanent deformation occures which
would invalidate the type of protection.
Keep the modifications to carry out the
leakage test (sec. 4-4-3).
no permanent deformation occures which
would invalidate the type of protection.
Keep the modifications to carry out the
leakage test (sec. 4-4-3).
Fig. 4-1
Setup for routine tests
Setup for routine tests