The device not only protects batch quality, but also significantly improves plant efficiency for a range of reflow application processes.
The DF-150E is highly suitable to control O2 levels in surface mount soldering operations in reflow PCB ovens, which must be O2-free if the soldered joint is to be permanently sealed.
In reflow ovens, heat is transferred to assemblies by radiation using nitrogen (N2) to establish an O2-free environment that minimizes oxidization of surfaces to be soldered. The DF-150E uses non-depleting coulometric E-sensor technology to ensure accuracy with no sensor drifting and no false low readings, protecting against oxidization. This no fail performance is crucial, as a false O2 reading can waste thousands of dollars in scrapped final product, schedule disruption or cause safety issues when using N2 or mixtures using N2 as a blanketing gas.
An extremely versatile unit, it can be configured to operate either as a single or three-range analyzer to meet specific process needs, while its non-depleting technology enables the O2 sensor to cope with short time exposure to ambient air – with options for temporarily disabling the sensor to enable longer exposure to ambient air.
This feature in particular is a capability not possible with traditional electrochemical sensors, where extended exposure to air quickly damages the cell.
Every DF-150E is custom configured under ISO-9001 controls to meet the customer’s precise specifications and calibrated to standards traceable to NIST and operated for several days to ensure flawless out-of-the-box performance. The analyzer also delivers near-instantaneous response to O2 change – typically taking less than 10 seconds to read 90 percent of a step change.
Factory calibrated, the analyzer reduces the cost of maintenance with a five-year sensor warranty that requires only an annual SPAN calibration and no programmed cell replacement. Further, the DF-150E offers users a range of configuration options that enables it to be built to particular measurement requirements, with choices including CE Certification, a choice of outputs, flow alarm, sample pump and remote sensor options.
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