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. . . OPERATIVE LIMITS
Proof pressure
The transmitter meets SAMA PMC 27.1 requirements and can
be exposed without leaking to line pressure of up to:
- 48 MPa, 480 bar, 6960 psi for 6X1ED-EE-EH;
- 28 MPa, 280 bar, 4060 psi for 6X1EG, 6X1EA;
- 77 MPa, 770 bar, 11160 psi for 622ED;
- 20 MPa, 200 bar, 2900 psi or two times the flange/fitting rating
of the seal, whichever is less for 6X1ES.
Environmental limits
Wet and dust-laden atmospheres
The transmitter is dust and sand tight and protected against
immersion effects as defined by IEC 529 (1989) to IP 67 (IP 68
on request) or by NEMA to 4X or by JIS to C0920.
Electromagnetic compatibility (EMC)
Comply with EN 50081–1 for emission and EN 50082–2 for
immunity requirements and test; CE mark.
Fill fluid warning
Be sure that the fill fluid can mix safely with the process fluid in
case of rupture of the sensor membrane.
CORROSION
In the attached table the following abbreviations apply:
A
= Generally suitable Corrosion rate < 0.12 mm, 0.005 in
per year.
B
= Concentration and Temperature Limited
NR = Not Recommended
-
= No Data Available
Numbers indicate the maximum allowable temperature (°C) for
a generally suitable material.
NOTE
Data of the following table are based on information from
manufacturers.
All data is based on a temperature of 20 °C, 70 °F unless
noted otherwise.
Since corrosion involves many more variables than this
table considers, such as trace contaminants, aeration or
temperature-concentration profile, stress corrosion cracking
and pitting, the table should be used only as a reference in
narrowing the choice of materials that merit further
investigation. Suitability of a particular material is best
determined by field test.
At this purpose, please contact our local ABB
representatives.
WARNING
For safety purpose the design corrosion allowance of
differential pressure instrument flanges is of about 1.5 mm
0.04 in. Therefore from the viewpoint of safe containment of
liquids compatible with a specific material according to the
following table, the expected instrument lifetime is more
than 10 years, but the previous note apply.
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