Model 398VP Retraction/Submersion/Insertion pH/ORP Sensor

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 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.

The TUpH reference junction and helical pathway combined with the AccuGlass pH glass performs exceptionally well in dirty, high solid applications and requires only minimum maintenance. This is the toughest pH sensor on the market and is still unmatched by all other pH sensors. The constant increase in demand for the TUpH sensor proves its success as the best process industry pH sensor.

All TUpH sensor models have been specifically designed for improved life in harsh, dirty, and abrasive applications such as lime slurry, waste treatment, paper machine headbox, and pigment/dye applications, where large quantities of suspended solids are present. Various sensor materials, depending on the sensor model, is available for a variety of different application needs.

• QUICK CABLE-TO-SENSOR RELEASE, provided by the watertight VP 6.0 connector, eliminates cable twisting.
• MINIMUM SENSOR MAINTENANCE due to patented TUpH reference technology¹ which ensures steady pH signal when sensor is coated.
• MAXIMUM SENSOR LIFE because of secondary helical reference pathway² which hinders reference poisoning.
• FIELD PROVEN AccuGlass³ pH glass formulations minimize glass cracking, resulting in enhanced performance and increased life.
• OPTIMUM VERSATILITY by providing various mounting options. Also can be used with all Rosemount Analytical and other manufacturers' instruments.
• SUPERIOR CHEMICAL RESISTANCE through choice of sensor construction materials to battle many aggressive elements.