Parr Instrument 6400 - Manual (Page 28)

6400
Calorimeter Instruction Manual
4-9
2. The water fill solenoid opens and water is pumped from the internal tank into and
through the bucket that surrounds the bomb. Overflow from the bucket is
returned to the closed water tank. Because the jacket and bucket are both filled
with water from the closed water tank, initial equilibrium will be reached quickly.
3. The oxygen fill solenoid is opened and oxygen is added slowly to the bomb to
bring its pressure to approximately 30 atm.
Pre-Period
At the completion of the fill sequence, the pre-period begins.
Figure 7 - Pre-Period / Post-Period Flow Diagram
1. The water fill solenoid valve closes and isolates the water in the bucket from the
rest of the system. Water within this bucket is circulated by the stirrer. Water