Liquipoint T FTW 31, FTW 32
Endress + Hauser 23
!
Note! For FEW 52, FEW 54
If the probe is covered and the red LED flashes continuously, the next more sensitive measuring
range has to be set. This ensures a safe switch point even if the conductivity of the medium varies
slightly.
L00-FTW31xxx-15-05-xx-en-001
Certificates and approvals
CE mark The Liquipoint T meets the legal requirements of the EC directives.
Endress+Hauser confirms that the device has been successfully tested by applying the CE mark.
Overspill protection Approvals
•
WHG
•
Leak test (Leakage)
Other standards and
guidelines
Other standards and guidelines that were observed during the design and development of the
Liquipoint T FTW 31 and FTW 32.
•
Low voltage equipment directive (73/ 23/ EEC)
•
DIN EN 61010 part 1, 2001
Safety regulations for electrical equipment for measurement, control and laboratory use
Part 1: General requirements
•
EN 61326
Electrical equipment for measurement, control and laboratory use EMC requirements
Ex-approvals The Endress+Hauser sales office provides information on the currently suppliable Ex versions
(ATEX EEx ia and ATEX EEx nA/C(L)). All data relevant for explosion protection can be found in
separate Ex documentation (see: Supplementary Documentation on page 26). This can be
viewed as necessary.
Type of protection
•
[EEx ia] IIC (FEW 58)
•
[EEx na/C(L)] IIC (FEW 52, FEW 54)
3 4 5
6 7 8
3 4 5
6 7 8
3 4 5
6 7 8
3 4 5
6 7 8
MAX
Relais
switch point
MIN
Relais
rd
rd
switch point
MAX
MIN
level
level
measuring range limit
measuring range limit
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