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1. General Information :
1.1. Material Acceptance
Check that there is no damage on the packages during the transportation immediately after the material acceptance. If packages are
damaged, open the packages immediately and check whether products are affected or not, if there is any damage, send your
complaint report to the transporter company and its photocopy to the address of our company.
1.2. Information about Areas of Use
ECAS level switch is a capacitive level sensor for level measurement of conductive liquid, nonconductive liquid, granulated materials with
solid particles, adhesive and acid / base liquids. When a material comes between electrode rod and tank wall, a capacitance change
occurs and when this change exceed adjustment threshold, contact output is delivered.
Designed for difficult process conditions. Models with cooling apparatus can be manufactured for high temperature and pressure conditions.
Calibrations of triggering point and relay operation range can be performed by the user under workplace conditions.
It can be connected horizontally or vertically.
Application Areas
Liquid tanks, food machines, cooling liquid tanks, shipping, glycol tanks, brine, waste water tanks.
Oil tanks, CO2 liquid tanks, high temperature tanks, low-conductive liquids.
Grain silo, cement silo, sand feed, dough, milk powder, organic and plastic granule.
Sticky hot and high viscosity liquid, acid and chemical liquids.
Ambient Conditions: Relative Humidity: 0-98 %RH Ambient temperature: 60C (It is not used under -20 C)
Capacitance definition, assuming two parallel conductive plates are used;
1.3. Working Principle
d
C
R
Isolation
Metal Tank
S
Impedance
Distance
Capacity
Distance
However, there are scarcely any sensor type which this definition
can be pratically utilized. Above Formula can no longer
is reliable especially when residual areas increase due to large
distance (d) (which is usually the case). Thus, measuring
impedance for distance measurements gives more accurate
results than capacitance measurement.
C: capacity , Farad
S: Surface Area , m²
d: Distance , m
eo.er.S
d
C=
e
Excitation applied between 10 KHz250 KHz based on length
for all our models. ( =2 x p x f) Linearity error that may be caused
by conductivity component (R) effect is prevented by electronic
circuit design and mechanical design. Reduced to a level lower than
1ppm, acceptable as zero.
e
Impedance definition Z = R + jL + ( jC )-1
e
R is defined as real component and represent ambient conductivity.
Advantages :
Optionally high temperature-resistant
design.
Easy assembly and sensitivity
adjustment.
No need to clean.
Not affected by foam, liquid splash and
probe coating.
Can be mounted upside down (reverse)
