E+E Elektronik Ges.m.b.H.

Dew Point Sensor down to -70 °C Td (-94 °F Td)

Industrial drying applications, especially battery cell production, places stringent demands on dew point measurement. At low moisture levels, even small deviations can impact product quality, yield, and safety. Common processes such as opening doors or airlocks and load changes require stable signals. In this environment, a “frozen” or heavily averaged output during auto-calibration can create process blind spots. The TDS501 is designed to provide continuous dew point data down to -70 °C Td (-94 °F Td), enabling reliable process mapping 24/7 and supporting efficient dehumidification control. With a robust industrial design and straightforward integration with analogue and digital interfaces, the TDS501 helps reduce avoidable energy consumption and unplanned downtime. 

• Fast response time and process reliability
• High repeatability and an accuracy of ±2 °C Td
• Pressure rating of up to 80 bar (1,160 psi)
• Responds immediately to dew point changes at all times

Application Areas

• Industrial Drying
  Drying rooms for battery cells; drying ovens (coatings, powder coatings, electronics); plastics drying (granulate dryers & material drying)
• Pharmaceutical Industry
  Compressed air applications for drying, quality control of coatings, filling, and packaging
• Food & Beverage
  Compressed air applications for drying, quality control of coatings, filling, and packaging

Process confidence you can build on with repeatable dew point measurements that work up to 80 bar pressure

When dew point becomes a control variable, you need the confidence provided by a signal that stays consistent across changing operating conditions and gives the same answer every time you return to the same process state. The TDS501 is built for exactly that kind of dependable monitoring by combining high repeatability with ±2 °C Td accuracy to support stable, reproducible production conditions. It is also designed to ensure that typical process temperature changes do not undermine the dew point result, keeping the measurement reliable when the environment is dynamic. And with a pressure rating up to 80 bar, it can be installed where the process actually runs, making it a robust foundation for process control and quality assurance in high-pressure compressed air applications.

A fully tuned measurement system for reliable performance

The TDS501 is not just a dew point sensor element packaged into a housing. It is a measurement system engineered as a whole. E+E Elektroniks in-house sensing elements are optimized for the target application, and the deep understanding of their physical behavior is the basis for reproducible and stable measurement performance. This is why E+E Elektronik can align all relevant operating algorithms: sensing element, electronics, mechanical integration, mounting, and adjustment. So they work together consistently, rather than behaving like independent parts. For customers, this means stable, repeatable results and a dependable basis for process decisions across devices, batches and operating conditions .