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Key features
  • Trace level Tunable Diode Laser (TDL) sensing provides high stability measurements through minimal moisture contact with optical elements
  • Broad detection range: 0-20ppm
  • Flexible configuration options: initiation via front panel/digital interconnect
Easy to use
Low cost of ownership
Unrivalled performance
Benchmark compliance

The DF-749 provides trace and ultra-trace moisture contaminant measurements in various background gases including nitrogen, hydrogen, helium, argon and oxygen. Ideal for quality checking of UHP gases used in LCD and LED manufacture, the DF-749’s compact form makes it easily portable for easy cart or mobile use. A robust hardware/software design virtually eliminates dry down times often associated with UHP gas checking.

Offering an ultra-sensitive Lower Detection Limit (LDL) of 250ppt, this device uses industry-leading Tunable Diode Laser (TDL) sensing technology, delivering ultra-reliable baseline measurements and a fast speed of response. This analyzer is also highly affordable over product life, with a robust sensor construction that has low lifetime maintenance requirements and a zero-drift measurement stability that greatly extends calibration intervals. Factory pre-calibration also provides simplified set up.

  • 483mm (19”) Wide x 266mm (10.5”) High x 608mm (23.9”) Deep
  • 31.8kg (70lbs)
  • IEC 61010-1 
  • Overvoltage Category II, Pollution Degree 2 
  • EU EMC Directive 
  • EU Low Voltage Directive 

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Key Applications
  • Bulk gas quality control checks for UHP electronic gases used in LED and LCD plant applications
  • Leak detection checks for UHP electronic gases used in LED and LCD plant applications
Service and Spares

Ensure your DF-749 NanoTrace moisture analyzer delivers optimum performance with Servomex Service Network.

Through our global network of engineers and service centers, we provide complete lifetime support for your analyzer. Our services range from installation and commissioning to supplying high quality spares and arranging scheduled servicing: visit our Service Network pages to find out more.

Spares lists for the DF-749 are available by clicking on the Downloads tab.

Global Service Network