SERVOPRO DF high purity

The DF-740 measures trace moisture in ammonia gas for LED plants

A trace moisture analyzer using Tunable Diode Laser (TDL) sensing technology, the DF-740 is designed to measure contaminants in UHP-grade ammonia.

Trace moisture measurements for quality control of ammonia gas production in LED plants

The DF-740 is designed specifically to monitor trace levels of moisture in electronics-grade ammonia (NH3) used in LED plants. Industry-leading TDL sensing technology and a robust Herriot Cell enable an exceptionally broad measurement range of 10ppb-10ppm.

By ensuring moisture only comes into contact with minimal optical components, the DF-740’s performance is unaffected by loss in mirror reflectivity – ensuring a fast response measurement that is stable, accurate and consistent.

The DF-740 is designed for long-term unattended operation, delivering considerable cost-savings. The high-stability optical TDL technology requires minimal ongoing maintenance, with zero drift enabling greatly extended calibration intervals.

Dan Johnson
Global Head of Product Management – P&S

High stability TDL measurements

When you need a solution that can undertake quality checks of electrograde NH3 during bulk gas checks for LED manufacture, you need a device that delivers high measurement accuracy, excellent stability – and is capable of being left unattended for extended periods. A robust design that removes issues associated with mirror reflectivity loss is a must and so is the need for a broad monitoring range. No matter your specific application needs, you’ll want a moisture analyzer that can reduce your ongoing costs and provide operational efficiencies. We don’t believe you should have to compromise.

A no compromise solution

The DF-740 has been designed to deliver optimum performance in the measurement of trace moisture in ammonia. This device uses leading-edge TDL sensing technology housed in a sturdy Herriot Cell, ensuring there is no loss of mirror reflectivity, thanks to minimized moisture contact with any optical components. This ensures the DF-740 gives a measurement that is highly stable, reliable and capable for being left unattended for long periods – a benefit supported by comprehensive data logging which captures and recalls calibration, system error and measurement data.

Simple maintenance and reduced ongoing costs

The DF-740 is also optimized to provide significant cost savings over a long product lifetime. The use of a high stability, zero drift TDL sensor extends calibration intervals and minimizes ongoing maintenance. In summary, the DF-740 is the ideal solution for your gas monitoring needs, thanks to the combination of its ultra-high performance capability, stable reliability and operational efficiency potential.

Let us help build your system

If you’re building a gas analysis system, contact us before you start. Our expert knowledge and engineering skills will help you see your project through from start to finish.

Ready to buy? Here’s how it works

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Enquiry

Get in touch to tell us what you need and the application you plan to use it for

Consultation

Our expert team will help you select the right product package, ensuring you have the accessories and support to get the best performance from your analyzer

Fulfilment

Your analyzer will be assembled in one of our state-of-the-art engineering centers and rapidly dispatched to your site

The benefits of TDL moisture measurement

The high-performance DF-740 analyzer offers ultra-stable monitoring and significant cost savings.

Extended maintenance periods

Ultra-stable TDL sensing means that the DF-740 requires less frequent maintenance, while requirements are simple, with no consumables required.

High reliability

By minimizing water contact with optical components, the DF-740’s repeatable baseline measurements are unaffected by loss in mirror reflectivity, ensuring accuracy and stability.

Exceptional performance

The DF-740’s analysis is immune from gas cell concentration, ensuring the analyzer continues to operate to specification with up to 90% signal loss.

Unrivalled performance

  • Analysis immune from gas cell concentration: DF-740 operates to specification with up to 90% signal loss
  • 10ppb Lower Detection Limit (LDL)
  • Manufactured by Servomex – over 60 years’ experience innovating gas analysis with thousands of units used in the field

 

Flexible

  • Trace level Tunable Diode Laser (TDL) sensing provides high stability measurements through minimal moisture contact with optical elements
  • Broad detection range: 0ppb – 10ppm
  • Operable via front panel or digital communication options

 

Easy to use

  • Simplified ongoing maintenance requirements with no consumables required
  • High reliability; repeatable baseline measurements are not affected by a loss in mirror reflectivity
  • Designed for long term unattended operation with minimal maintenance needs

 

Low cost of ownership

  • Maintenance periods extended by the use of patented ultra-stable, TDL sensing technology
  • Zero drift reduces calibration requirements

 

Benchmark compliance

  • IEC 61010-1
  • Overvoltage Category II, Pollution Degree 2
  • EU EMC Directive
  • EU Low Voltage Directive

Gases sensed, measurements and technologies

The DF-740 uses TDL sensing technology and a robust Herriot Cell to deliver trace moisture measurements in a broad range.

Gas Measurement
Water Vapour (Moisture) (),

Technologies

Certificates

  • IEC 61010-1
  • Overvoltage Category II, Pollution Degree 2
  • EU EMC Directive
  • EU Low Voltage Directive

Schematics (select to expand)

Size

483mm (19”) Wide x 266mm (10.5”) High x 608mm (23.9”) Deep

Weight

31.8kg (70lbs)

Get the detailed specifications

“For in-depth specifications you’ll want to download our technical datasheet which includes information on technology, performance, operating environment, sample conditions and compliance along with technical drawings and top-level benefits and applications.”

Dan Johnson
Global Head of Product Management – P&S

A single download with all the information you need

“Our resource pack for the DF-740 contains full details about the features and advantages of this trace moisture analyzer. Download it now to learn more.”

Dan Johnson
Global Head of Product Management – P&S

Typical applications

A combination of high performance, ultra-stable measurements and affordability makes the DF-740 an attractive solution for electronics-grade NH3 quality checking applications.

Trace NHanalysis for quality control of electronics-grade bulk gases used in LED production | Trace NH3 analysis for leak detection of electronics-grade bulk gases used in LED production

UHP Gases / Semiconductors

A comprehensive systems solution

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