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2 Usage
Fig. 1
A Limit switch for two-wire
AC power supply
B Limit switch
for universal power supply
with one
changeover contact
C Limit switch
for universal power supply
with two
changeover contacts
6
2 Usage
2.1 Application
Soliphant is a rugged limit switch for silos containing powdered or fine-grained solids,
including those with very low bulk densities.
The material must be pourable, i.e. it must not stick or bake on.
The various versions ensure it can be used in a wide range of applications, including
explosion-hazardous areas and foodstuffs.
The instruments are designed for use in industrial applications.
Typical applications:
grain, flour, milk powder, cocoa, sugar, animal feed,
washing powders, dyes, chalk, plaster, cement, plastic granules
2.2 Measuring System
The components of the measuring system are:
• Soliphant II
– FTM 30 DR compact sensor
– FTM 31 DR with extension tube
– FTM 32 DR with rope
• Separate housing with electronic insert
– FEM 41 for two-wire alternating power supply
– FEM 44 for universal power supply
and relay output with one potential-free switchover contact (SPDT)
– FEM 45 for universal power supply
and relay output with two potential-free switchover contacts (DPDT)
• Control systems or signal devices that may be connected such as miniature
contactors, alarm transmitters or programmable logic controllers
e.g. FTM 31 DR
e.g. FTM 32 DR
FTM 30 DR, FTM 31 DR, FTM 32 DR
e.g. FTM 30 DR
L1
U ~
N
U ~
U ~
Endress+Hauser
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