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Section 1: Description and Specifications
1.1 Features and Applications
TUpH
™
pH/ORP-sensors are now offered with SMART capabilities. SMART option becomes
enabled when used with the 1056, 1057, 1066, and 56 Analyzers and on 6081P wireless trans-
mitter. The pH-loop capabilities include auto-recognition of the SMART sensor, automatic upload
of calibration data and associated time stamp, historical recording of pH diagnostics (slope,
offset, reference impedance, glass impedance). This trending data allows technicians to predict
frequency of maintenance and estimate sensor life for a particular process condition. Additional
SMART features include factory calibration, resetting SMART sensor calibration data with user
menus, and manufacturing information.
The TUpH large area reference junction for minimum maintenance requirements: The reference
junction provides an electrical connection between the reference electrode and the sample, and
helps maintain a stable reference potential, regardless of the change in sample pH. The TUpH
reference electrode junction, the entire plastic tip surrounding the glass pH electrode, maintains
a steady reference signal even in the dirtiest of applications because it resists plugging (a common
cause of pH signal drift). This large reference junction area is made of micron sized reference
pathways used for ionic exchange so it resists plugging by large particles and will continue to send
a steady pH signal, even in the dirtiest of applications. The TUpH reference junction technology
has been field-proven for minimum maintenance requirements.
The TUpH helical reference pathway stops reference poisoning. Ions diffuse through the reference
pathways and a charge is passed to the reference element. The reference element must be
protected from contamination by poisoning ions such as sulfide, mercury, cyanide, and ammonia
or else the pH signal will drift. The TupH sensor's long internal helical reference pathway hinders
and slows down the rate of contaminants migrating to the reference element therefore providing
for a longer sensor life.
The entire line of TUpH model sensors now incorporate the new SILCORE
™
technology contami-
nant barrier. This triple-seal barrier prevents moisture and material impurities from migrating to
the pH sensor’s reference electrode’s metal lead wire. By preventing these contaminants from
compromising the integrity of the pH measurement, sensor life is increased, especially at higher
temperatures where increased migrations occur. In addition, the SILCORE technology provides
added protection against sensor failure due to vibrations and shock by transferring damaging
energy away from the glass-to-metal seal.
The AccuGLASS
™
pH glass formulations exceed industry standards. The AccuGlass pH glass is a
result of many years of glass research resulting in a formulation which has been found to increase
the life of the sensor. Unlike other pH glasses presently on the market, this glass resists cracking
especially at higher temperatures and reduces sodium ion error commonly found in high pH
applications. Overall, the AccuGlass formulation enhances the sensor performance to measure pH
more accurately and have a longer sensor life than ever before.
A choice of flat or hemi glass pH glass electrodes is available to best meet various application
needs. Flat glass is advantageous in abrasive or coating applications that etch or build up on glass,
respectively. In coating applications, such as slurries, the flat surface allows the process flow to
act as a scrubbing agent to reduce coating and maintenance. In abrasive applications pitting from
silicates and other similar materials is minimized by the flat glass surface to provide longer sensor
life. Flat glass sensors are offered with a flat tip which is flush with the flat glass. The hemi bulb
glass is ideal for general purpose use and for those processes requiring greater accuracy over the
entire pH range. All hemi bulb sensors are offered with a standard shrouded tip which completely
surrounds the glass bulb for protection against solids. An optional slotted tip is also available and
Description and Specifications 1
396P + 396PVP Sensors Instruction Manual Section 1: Description and Specifications
LIQ_MAN_396P_396PVP August 2013