Using an advanced coulometric sensing technology that delivers accurate and stable oxygen analysis, the Servomex DF-150E protects batch quality and significantly improves plant efficiency for a range of reflow application processes.

Accurate to ±3% of reading/0.5% of measurement range, the DF-150E is highly suitable to control oxygen (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.

Extremely versatile, the DF-150E unit can be configured to operate as a single or three-range analyser to meet specific process needs.

In reflow ovens, heat is transferred to assemblies by radiation using nitrogen (N2) to establish an O2-free environment that minimises oxidisation 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 oxidisation.

The DF-150E’s 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 – a capability not possible with traditional electrochemical sensors, where extended exposure to air quickly damages the cell.

Oxygen signs

The DF-150E is factory calibrated and reduces the cost of maintenance with a five-year sensor warranty that requires only an annual SPAN calibration and no programmed cell replacement.

The flexibility of the DF-150E means it can be easily integrated into multiple zone sample systems using a manual or automatic sequencing system.

The DF-150E offers users a range of configuration options that enables the analyser to be built to their particular measurement requirements. Choices include CE Certification, a choice of outputs, flow alarm, sample pump and remote sensor options. A unique acid gas sensor option also neutralises trace levels of acid gases in the sample including carbon dioxide (CO2), hydrogen sulphide (H2S), nitrogen oxide (NOX) and sulphur dioxide (SOX).

India awards

Meanwhile, in other news from Servomex, the company’s recent attendances at tradeshows in India have received special awards from the event’s organisers.

Servomex’s stands at the Automation 2013 and Petroleum and Natural Gas Conference & Exhibition 2013 (PNID) tradeshows were both recognised for the quality of their customer presentation.

Servomex’s Mumbai team, who organised and manned the standards, were awarded first prize and third prize by the Automation and PNID organisers respectively.

Servomex also won third prize for best stand at PNID 2013, a tradeshow held at Hotel Taj Palace, Sardar Patel Marg, New Delhi on 3rd October 2013.

The show was organised by International Society of Automation (ISA) Delhi Section, who invited a range of public and private organisations to evaluate state-of-the-art technologies from global vendors.

Servomex was awarded third prize in the best stand category.