How Long Does the Kistler 6125A Maintain Accuracy?

The Kistler 6125A, a premium corrosion-resistant sensor from the firm, has continuously been acknowledged as one of the best performers in the industry for accuracy retention in high-temperature, corrosive hot runner injection molding conditions. Its accuracy can be consistently maintained for 2.5–3.5 years with good installation and operation, which is significantly longer than that of typical hot runner sensors in the same price range. Installation and usage patterns have a direct impact on the specific accuracy retention performance, which is influenced by processing conditions:

For processing popular high-temperature engineering polymers (such PC and PA), with comparatively weak corrosive ingredients and long-term operation temperatures ≤320°C... The 6125A performs the best in this situation in terms of accuracy: Because of its standard Compared to standard stainless steel diaphragms, the Hastelloy C276 sensing diaphragm has a corrosion and aging resistance that is more than 50% greater. The circuit board is protected from long-term aging brought on by high temperatures in the flow channel by the high-temperature isolation design of the integrated amplifier at the tail. After three years of usage, the sensor's zero-point drift stays steadily regulated within 0.1%FS and the full-scale accuracy deviation stays within the nominal 0.25%FS range, fully satisfying production accuracy standards, according to feedback from the majority of factories utilizing it in accordance with regulations. For up to four years, many well-maintained devices can even retain acceptable accuracy.

The accuracy retention of the 6125A is still much better than that of standard non-corrosion-resistant sensors while processing extremely corrosive, high-temperature materials like PEEK and fluoroplastics under harsh circumstances of 320°C to 380°C. The diaphragm ages somewhat more quickly than usual because of the combined effects of material deterioration and constant high temperatures. The steady accuracy retention period is roughly two to three years, which is more than twice as long as the typical stainless steel diaphragm sensors' 1 to 1.5 years. The demands of high-end injection molding production are still met by its long-term precision stability.

The 6125A sensor's accuracy retention time can be extended by three to six months beyond the upper limit if installation specifications are strictly adhered to, making sure the sensing end face is flush with the inner wall of the hot runner and the working pressure is continuously controlled within 80% of the range, avoiding overpressure and overload. This is in addition to the impact of the operating conditions themselves. On the other hand, if the installation depth is off, the sensing head protrudes from the inner wall of the flow channel and is constantly impacted by the melt, or if it is used outside of the range for long periods of time, the diaphragm will age and fatigue prematurely, reducing the accuracy retention time by approximately one-third and possibly causing accuracy problems in less than two years.

The accuracy retention advantage of the 6125A is substantial when compared to comparable items from other brands in the same category: While most high-end domestic corrosion-resistant sensors maintain accuracy for one to two years, ordinary imported corrosion-resistant sensors usually do so for 1.5 to 2.5 years. However, the 6125A dramatically lowers the frequency of sensor replacement and calibration, minimizes downtime maintenance costs, and extends this accuracy retention by at least a year through enhanced material selection and process design. One of the main reasons for its widespread acceptance in the high-end injection molding industry is that a longer accuracy retention time translates into cheaper long-term operational costs for factories that process corrosive and high-temperature raw materials for extended periods of time.

Overall, the accuracy retention capabilities of the 6125A fully satisfies its high-end standing as a high-end hot runner sensor made by Kistler for harsh operating situations. It can consistently maintain acceptable accuracy for more than two years, fully satisfying the production interval needs of the majority of industries, even in the most demanding, extremely corrosive, and high-temperature settings.