Parr Instrument 6400 - Manual (Page 73)

6400
Calorimeter Instruction Manual
10-4
A Preperiod Timeout Has Occurred
The calorimeter has failed to establish an acceptable initial temperature, prior to firing
the bomb, within the time allowed. Possible causes for this error are listed below:
• A bomb leak
• Poor bucket stirring
•
Lid not tight
The Current Run Has Aborted Due To Timeout
The calorimeter has failed to establish an acceptable final temperature within the time
allowed. Possible causes for this error are listed below:
• A bomb leak
•
Poor bucket stirring
There Is A Problem With The Bucket Thermistor
Possible electrical open. These errors will result if the temperature probe response is
not within the expected range. 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 the board
• Check quick disconnect
• Replace probe
•
Replace board
There Is A Problem With The Jacket Thermistor
Possible electrical open. These errors will result if the temperature probe response is
not within the expected range. 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 the board
• Check quick disconnect
• Replace probe
•
Replace board
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.