Parr Instrument 6725 - Manual (Page 62)

6725
Semi-micro Calorimeter Instruction Manual
10-2
Probe substitution can be useful in determining the cause of the problem (probe or
electronics). The valid working range of the probe resistance is 1000 to 5000 ohms.
• Check connection to board.
• Check quick disconnect.
• Replace
probe.
A/D Initialization Failed.
Shortly after power is applied to the calorimeter controller and the operating system has
started, the CPU attempts to read the unique I/O board calibration information from the
I/O board. If the I/O board is not connected to the CPU, or the information on the board
is not valid, this error will be issued.
Bomb ID – Has Been Fired – Times Which Exceeds The Bomb Service Interval. The
calorimeter controller keeps track of how many times the bomb has been fired. When this
count exceeds a preset limit (usually 500) this message will be issued each time the bomb is
used for a test. Perform bomb maintenance and reset counter on Calibration Data and
Control page for appropriate bomb number.
You Have Exceeded The Run Data File Limit (1000 Files) The memory set aside for test
runs has been filled. Use the memory management techniques to clear out non-current
tests.
Bomb EE Standard Deviation Warning. The relative standard deviation for the
calibration runs in memory for the indicated bomb exceeds the preset limit.
Sample Weight Warning.
The entered sample mass exceeds the value entered via the Sample Weight
Warning Above key on the Data Entry Controls page. A reasonable threshold for the
6725 is 0.5g.