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ATEX Instruction Manual
ETC01035
August 2005
MLT 2 / BINOS
®
100 F
Emerson Process Management Manufacturing GmbH & Co. OHG
4 - 5
4-4-2-3 Leakage Test
The leakage of the enclosure has to be
measured with an overpressure of 95 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 4-4-2-1are still
existent.
• Apply an overpressure of 95 mbar to
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:
• single analyzer: 3 l/minute maximum
• dual analyzer: 4.5 l/minute maximum
4-4-2-2 Overpressure Test
A pressure of 143 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:
• Carefully apply a pressure of 37.5 mbar
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. 4-4-2-3).
Fig. 4-2
Setup for routine tests
4-4 Verifications and Tests