Technical Reference
Manual-XPM3m Revision Date: August 2014
ON-BOARD OXYGEN (O
2
) ANALYZER
THE ON-BOARD OXYGEN ANALYZER IS:
Standard, (installed on all ovens
An option, (NOT installed on all ovens)
O
2
Analyzer Zr-Ox MKII
DESCRIPTION:
The On-Board O2 Analyzer is a self-contained unit consisting of an oxygen sensor, pump, and power supply,
completely integrated with the Reflow Oven. The Analyzer is mounted at the rear of the oven behind the lower skins
and near the N2 flow meters.
The oxygen sensor consists of a solid state ion conductor of stabilized zirconiumoxide, which is heated to a constant
temperature of 1000 K (727 C). The measured oxygen content is displayed on the face of the Analyzer and on the
computer monitor through the Oven Control Program.
PURPOSE:
XPM3m
Nitrogen ovens are equipped with a single sampling port located in the peak zone (standard) or a 4 port
system (optional) with the ability to sample from the Preheat, Soak, and Reflow zones and Source Gas).
The 4-port option has either a rotary 5-way valve located next to the Analyzer, or a series of solenoid valves that are
actived through the oven software to select the location from which the Analyzer sample is taken. These sampling
ports are used to determine the oxygen content inside the oven.
APPLICATION:
The Analyzer has controls on its front panel for the operation of the unit. The Analyzer settings should
not
be
changed during normal oven operation while using nitrogen as an atmosphere. The Analyzer will continuously
sample to provide a real-time measurement of the tunnel atmosphere.
