SOLDER REFLOW FURNACES
THE SERVOPRO MonoExact DF310E AND AquaXact 1688 WORK TOGETHER TO PROVIDE A COMPLETE GAS AND MOISTURE ANALYSIS SOLUTION FOR FURNACE ENVIRONMENTS
The ability of the SERVOPRO MonoExact DF310E and AquaXact 1688 to integrate seamlessly for the combined analysis of O 2 and moisture offers an ideal solution for many applications, including metals annealing, air separation, instrument air production and glove box purging.
One specific application is solder furnace monitoring, which requires careful, responsive, and accurate control of oxygen and moisture in the furnace environment.
In the past, printed circuit boards( PCBs) were cleaned with chlorofluorocarbon( CFC) based agents before soldering. However, the use of CFCs has now been largely eliminated because of environmental concerns.
This means PCB manufacturers must create an inert environment in the solder furnace. To ensure consistent soldering quality, it is necessary to monitor the level of O 2 in the furnace.
If high-quality solder joints are to be assured, the nitrogen in the solder furnace also needs to have a low moisture dew point, typically below-50 o C.
Servomex’ s MonoExact DF310E digital oxygen analyzer uses Coulometric sensing technology to measure ppm O 2. This Coulometric sensor needs only an annual span adjustment, bi-annual addition of replenishment solution, and no proactive maintenance cell replacements, all of which lowers the lifetime cost of ownership. It also offers a five-year performance guarantee not matched by any other oxygen analyzer company.
Adding the AquaXact 1688 to the MonoExact DF310E’ s digital electronics provides an ideal solution for the exceptionally accurate monitoring of both O 2 and moisture in one system.
Unlike conventional moisture sensors, the AquaXact 1688 does not suffer from drift, so the response curve remains the same even after many months of operation at an elevated temperature.
In solder furnaces, this combination of technologies means excellent batch-tobatch solder quality and significantly reduced nitrogen consumption, with no compatibility issues caused by using sensors from different sources.
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