In dynamic processes, moisture conditions can change within minutes. Doors open, airlocks cycle, batches change, dryers drift and process loads vary. During these moments, the control system needs live dew point data. If a sensor freezes the output signal during auto-calibration, the displayed value may look stable, but it no longer reflects the real process condition.

The TDS501 from E+E Elektronik was developed for continuous dew point measurement down to −70 °C Td without signal freezing. Its four-element measuring- method enables auto-calibration while maintaining process visibility. This supports reliable monitoring around the clock and efficient dehumidification control. It is especially valuable in applications such as battery dry rooms, plastic granulate drying, adsorption dryers and other processes where hidden moisture deviations can lead to quality losses, energy waste or process instability.

In dynamic drying, gas and compressed air processes, dew point changes are process signals that require timely action. If a sensor reacts too slowly, the control system may detect moisture deviations too late, compensate with unnecessary safety margins or miss the right moment to adjust dehumidification, regeneration or purge cycles. This can lead to excessive drying, higher energy consumption, delayed fault detection, unstable process conditions or increased quality risk.

E+E dew point sensors are designed to provide fast and reliable process feedback. They do more than deliver stable values under ideal conditions.

Several E+E features support this fast process response. The measuring method of the TDS501 with four sensing elements enables continuous measurement during auto-calibration. Configurable stainless steel filter options allow the right balance between sensor protection and response speed. The optional open filter cap enables maximum dynamics in clean and dry environments where the fastest possible response is required. Combined with compact inline integration and digital interfaces such as Modbus RTU, E+E sensors help turn dew point from a passive monitoring value into a real control signal. With faster dew point feedback, customers can detect moisture deviations earlier, reduce energy intensive control errors, avoid unnecessary excessive drying and keep critical processes closer to the required moisture window.

Dew point sensors are often installed directly in challenging process environments such as compressed air lines, drying systems, gas supply systems, pipelines, OEM machines and high pressure applications. In these environments, pressure, oil, dust, temporary condensation, temperature changes and contamination can affect sensor reliability and measurement confidence. This makes robustness a decisive factor for uptime and total cost of ownership.

The TDS501 combines robust sensing elements, stainless steel housing, a sintered stainless steel filter, configurable filter options, IP65 protection and pressure resistance up to 80 bar. Its wettable sensing elements help the sensor tolerate temporary condensation events, supporting reliable operation even when process conditions are not ideal.

For high pressure industrial process control and compressed air applications, the EE371 offers a pressure rating up to 100 bar, a robust metal enclosure, various process connections and a 360° swirling front end for easy integration. The EE355 adds a compact stainless steel solution for compressed air systems, plastic dryers and industrial drying processes down to −60 °C Td. The EE354 is optimised for refrigeration dryer and compressed air network monitoring down to −20 °C Td with a rugged stainless steel design and pressure tight installation up to 80 bar.

In quality critical and regulated processes, dew point values must do more than control a process. They must support product release, dryer validation, customer specifications, audit documentation, complaint handling and root cause analysis. For these tasks, customers need measurement data that is not only stable, but also traceable and defensible.

E+E Elektronik combines industrial dew point sensors with strong metrological competence. The E+E accredited calibration laboratory offers traceable calibration for dew point sensors and dew point mirrors from -90°C to +95 °C dew point. E+E Elektronik is also the Designated Institute of the Republic of Austria for humidity and dew point, among other measurands. Customers therefore receive more than a sensor. They receive a complete measurement solution based on calibration expertise, traceability and long-term confidence in the measured value.