Ultra-thin sensor probes are permanently mounted along the length of the oven to measure product level temperature. This newly developed probe allows for a smaller physical size which offers two significant advantages, fast response to changing oven loading and the reduction of shadowing problems associated with components mounted close to the conveyor rails.
Product speed and position are monitored by way of dedicated speed monitoring instrumentation, combined with optical sensors and a new software algorithm, resulting in a 'True Profile' for every board processed.
PC software automatically calculates all important process parameters and checks for values outside defined limits for the process. On exit of the PCB assembly from the machine the process conditions and calculated profile are stored along with a unique ID in a database for complete product traceability.
Should the measured parameters drift outside process limits the system immediately stops further entry of assemblies into the machine via a standard SMEMA interface and alerts line staff that remedial action is required.
Key Systems Benefits
Automates the profiling process Provides 100% product traceability Profile verification and storage for every electronic assembly produced
Ultrathin embedded probe technology minimises process impact
Profile search and archive tools
Real time alarms and notifications via standard SMEMA interface
Why measure temperature at Product Level?
The oven itself monitors and maintains the temperature of each zone. This measurement is made near to the heaters and does not closely reflect the temperature seen at product level which is a function
of the machine convection.
The APS system adds independent temperature sensors mounted at product level close to the conveyor rails.
These sensors are designed to closely measure the heating levels seen on passing circuit boards whilst at the same time
minimizing shadowing caused by the sensor itself.
The APS system incorporates independent sensing and verification of machine conveyor speed.
Error Conditions Detected
Incorrect recipe loaded
Conveyor speed faults
Heater and fan failures
Reflow parameters outside tolerance
Probe Interface Unit
Oven temperature probes (designed specifically for each oven)
Conveyor speed sensor kit
Optical Board-in sensor
PCB sensor provides product tracking and intelligent process history recording.
Measurement Range -150 to 500C Measurement Accuracy +/- 1C Maximum Sampling Frequency 1 per second Communications/Power USB Conveyor Speed Accuracy +/- 1%
Process history recording and analysis through the APS-2000 PC software.
Windows™ XP Vista/Windows 7/8 32 & 64 Bit
Language Support English, French, German, Italian, Portuguese, Spanish & Chinese