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Design Setup

This is the design schematic that we have used in our experiment:

Electric Insertion Sampler: provided the data for the encoder. It was first operated dry, then wet and finally under pressure.

360 PPR Encoder: recorded each degree of the motor rotation and sent pulses to the microprocessor.

Microprocessor: Ran a timer to record how long the motor took to rotate every degree. It then stored the values in a 16 bit table 360 rows long. The table was then written to EEPROM memory so the microprocessor could be shut down and carried over to the computer to extract the table.

Computer: once the data has been read from the EEPROM memory the computer displayed it in the PuTTY program, using the ASCII form to convert binary into decimal. Then the values had to be manually copied into Excel, where a graph could be drawn.

Note: five recordings were obtained for each set of conditions and then an average was taken.

2.2. CONCLUSION (Analysis/Summary of result)

The electric sampler operated fastest when it was run wet, and operated the slowest under dry conditions.

Risks

Table 1. Risk Assessment

2.4. Final Review/Sign off

End of work review and sign off to be conducted between author and authority designate.