Plastics drying conditions can change during material changes, start-up, fluctuating moisture loads or regeneration cycles. If the dew point signal freezes during auto-calibration, the dryer control may miss the actual process condition. This is particularly critical when dew point is used for alarms, dryer validation or energy-efficient control.

The TDS501 provides continuous dew point measurement without signal freezing. Its four-element measuring method enables auto-calibration while retaining process visibility. This allows operators and OEMs to see the actual drying conditions around the clock and avoid blind spots in demanding low dew point applications.

露点升高可能表明干燥剂饱和、再生不足、泄漏、过滤器故障、油携带或原料含水率变化。快速反馈有助于在次品积压或生产不稳定之前识别这些问题。

E+E传感器将露点转化为可用于塑料干燥过程的控制信号。可选择不同的过滤方案，在保护效果与响应时间之间取得平衡。紧凑的在线安装方式将测量点置于干燥机出口、回风口或再生回路附近。通过Modbus RTU等数字接口，可将信号传输至干燥机控制系统、报警系统及趋势监测系统。

In plastics drying applications, sensors can be exposed to dry air, compressed air, elevated ambient temperatures, particles, traces of oil, temporary condensation and continuous machine operation. A robust design is therefore essential for high system availability and low maintenance requirements.

E+E Elektronik combines stainless steel enclosures, pressure-tight installation, robust sensing elements and application-specific filter concepts. With its stainless steel construction, IP65 protection, configurable filter options and pressure resistance up to 80 bar, the TDS501 is suitable for demanding low dew point applications. The EE355 adds a compact stainless steel solution for plastic dryers, compressed air systems and industrial drying processes down to −60 °C Td. It is particularly suitable for OEM dryer platforms where installation space, integration effort and long-term reliability are important.