Additive Manufacturing

In metal additive manufacturing, the process atmosphere has a direct impact on part quality. Moisture in the build chamber or purge gas can influence oxidation, melt behaviour, surface quality and porosity. It can also affect powder condition, particularly when sensitive metal powders are stored, reused or processed over extended periods.

Dew point is the key parameter for monitoring the actual dryness of inert gas atmospheres. It shows whether the build chamber, purge process or gas supply has reached the required moisture level. Gas velocity and flow measurements provide additional insight by helping to verify gas circulation, purge efficiency and stable atmosphere control. Together, these measurements help machine builders and users improve process repeatability, reduce scrap and document critical build conditions.

Why E+E Elektronik is the right partner for additive manufacturing monitoring:

  • Long-term stable low dew point measurement for monitoring inert gas and process atmospheres.
  • Accurate and traceable dew point data for build documentation and quality assurance.
  • Fast dew point feedback for purge processes, chamber monitoring and early detection of moisture deviations.
  • Compact sensor designs and digital interfaces for integration into additive manufacturing machines and gas systems.
  • Gas velocity and flow measurement expertise for monitoring circulation, purge processes and inert gas supply.

Advantages of Additive Manufacturing with E+E Sensors

Additive manufacturing processes often operate with tightly defined atmosphere requirements. If the dew point sensor drifts over time, the machine may continue to indicate a value within the specified moisture window even though the actual process atmosphere has changed. This can affect part quality, powder condition and process confidence.

E+E dew point sensors are designed to deliver stable measurements throughout their service life. Robust capacitive sensing elements, auto-calibration concepts and high repeatability help reduce uncertainty caused by drift. For demanding low dew point monitoring, the TDS501 covers measurements down to −70 °C Td. This gives machine builders and users a reliable data basis for atmosphere control, process monitoring and long-term quality assurance.

In additive manufacturing, moisture conditions can change during chamber purging, gas exchange, powder handling, material changes or as a result of leaks. Fast feedback shows whether the atmosphere is sufficiently dry before the build starts and whether moisture deviations occur during the process.

E+E sensors turn dew point into a usable process signal. Filter concepts can be selected to balance protection and response time. Compact inline integration places the measuring point close to the gas supply, purge line or process atmosphere. Digital interfaces such as Modbus RTU make the signal available for machine controls, alarm systems and trend monitoring. In demanding applications, the TDS501 provides fast feedback at very low dew points.

In metal additive manufacturing, process parameters must be reproducible. Dew point data has to follow documentation, quality assurance, commissioning, service checks and root-cause analysis when part quality varies.

E+E Elektronik combines accurate low dew point measurement with comprehensive calibration expertise. Traceable dew point calibration and E+E Elektronik’s status as a Designated Institute of the Republic of Austria for humidity and dew point strengthen confidence in the measured values. This helps machine builders and users document the actual dryness of inert gas atmospheres and compare measurement data across machines, processes and production sites.

Products for Additive Manufacturing

TDS501

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

Dew point transmitter EE355

EE355

Dew Point Sensor down to -60 °C Td (-76 °F Td)

  • down to −60 °C Td (−76 °F)
  • -40 to 70°C (-40 to +158°F)
  • up to 80 bar (1,160 psi)
  • RS485 (Modbus RTU)
  • stainless-steel housing
  • IP65 protection
EE371 Dew Point sensor

EE371

Compact Dew Point Sensor

EE354 Dew point meter

EE354

Dew Point Sensor down to -20 °C Td (-4 °F Td)

  • dew point down to –20 °C Td (–4 °F Td)
  • –20 to +50 °C Td (–4 to +122 °F Td)
  • RS485 (Modbus RTU)
  • up to 80 bar (1,160 psi)
  • stainless-steel housing
  • IP65 / NEMA 4X
AVS701 – Highly accurate air and gas velocity sensor for industrial applications | E+E Elektronik

AVS701

Highly Accurate Air and Gas Velocity Sensor for Industrial Applications

  • -40 to +140 °C (-40 °F to 284°F)
  • 0 to 40 m/s (0 to 8 000ft/min)
  • IP65 / NEMA 4X
  • for demanding industrial applications
  • high-end ceramic sensing element
  • stainless steel sensor head and probe
  • Modbus RTU

Questions about Additive Manufacturing?

Tell us about your application – we’ll recommend a suitable sensor or calibration solution tailored to your needs.

Matthew Nemeth | Managing Director E+E Elektronik Corporation USA
Matthew Nemeth | Managing Director E+E Elektronik Corporation USA
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