Conductivity Measurements in Wort/Water Interface0 pages

Application Data Sheet
ADS 2000-07/rev.A
March 2009

Food and Beverage Industry

Dependable Conductivity Measurements in
Wort / Water Interface
RESULTS
• Faster beer change over
• Reduce lost beer with tighter measurements
• Reduce off spec product
• Increase Brewery Profits

APPLICATION

SOLUTION

Beer – Push Water Interface

The PUR-SENSE™ Model 410 Four-Electrode
Conductivity Sensor from Rosemount Analytical
can accurately differentiate between different beer
brands, CIP solutions, and rinse water. The sensor
is made with FDA Compliant materials and wetted
surfaces have a better than 16 µinch Ra finish (not
including the active electrode surface). The sensor
has an integral RTD that contacts the process liquid
through a stainless steel face, enabling fast
response to temperature changes. The Model 410
also has a compact design. The sensor does not
penetrate deep into the fill lines so the sensor will
not impede the flow in smaller dimensional fill lines.
Flexible process installation is available through a
v a r i e t y o f d i f f e r e n t m o u n t i n g c o n f i g u r a tions:
Varivent Type N, G 1-1/4, 1-1/2” and 2-inch
Triclamp process connections available.

CHALLENGE
After Wort is boiled in the brew kettle, the green beer
is “pushed” by water to the whirlpool to prepare for
fermentation. Conductivity is a good technology to
determine the phase interface between the beer and
the push water.
Conductivity measurement plays an important role in
this process. Different brands of beer will have different
conductivity values. The rinse water will also have a
unique conductivity value based on the water source
and treatment. Finally, CIP solutions will also have
different conductivity values. The conductivity sensor
needs to differentiate between all these different
fluids as well as to be able to withstand the CIP
cycles.

The Model 1056 Intelligent Analyzer works with the
Model 410. The 1056 has improved signal conditioning
to allow a wider conductivity range with one sensor.
The 1056 allows up to two sensors inputs, reducing
cost and minimizing panel space. The 1056 has an
optional Profibus digital communications output that
can integrate with either a DCS or PLC. Another
digital option is HART Protocol that can optimize the
sensor’s performance when used with AMS.