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For
mercerizing machines
strong
lye regulation
to maintain a constant concentration in the circulation of the impregnation
compartment (saturator), mainly for wet-in-wet mercerizing, but also
for dry-in-wet
weak
lye regulation
to ensure a constant stabilization by maintaining the concentration
of the weak lye leaving the stabilizing compartment or the chain section
of the mercerizing machine
For
caustic mixing units
preparation
of a caustic soda solution
to the required concentration by mixing a strong solution (fresh lye
or recovered lye) and a weak solution (weak lye or water)
Measuring
principles
by
oscillating tube (regulation type REGULA)
Oscillating
element in tube form bent into a tuning fork. The liquid to be measured
passes continuously through this element. Excited electro-magnetically
by changes in the natural frequency by an exciting coil, it will oscillate
at its natural frequency. Changes in the density of the liquid lead
to changes in the natural frequency. This change in frequency, sensed
by a pick-up coil, represents the measurement effect. An additional
built-in resistance thermometer measures the process temperature, which
is used to compensate the temperature influence in the transducer.
by
floating body (regulation type LKR)
In a measuring container, a displacement body is suspended in the liquid
to be measured. Changes in the density of the liquid lead to changes
in the weight of the body. This change in weight, sensed by a pneumatic
weight cell, represents the measurement effect. There is no temperature
compensation with this measuring method.
Common
problems in mercerizing machines
The
concentration of caustic soda solutions in the mercerizing machine are
often adjusted manually, by observing the Baumé reading and adjusting
the valves. Or the installed automatic concentration regulators do not
always function properly. This can lead to wrong concentrations and
result in quality problems and/or to losses due to higher than required
caustic consumption.
KASAG
offers well proven automatic
caustic soda regulations to solve these problems.
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