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Page 112
Mini-AT User Guide
Item
No. Item Name Description
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149 EVENT LOG LOCK The function of the Event Logger is to record: Date, Time,
UserID#, assigned Sequence Number, Before value and After value
for changes made to instrument item values or other specific user
activity. By default, the Event Logger is ‘Unlocked’, meaning old
event records begin to be overwritten after 500 event changes. The
Event Log Lock can only be enabled with Mini-AT Link software
when the Event Logger Lock Jumper is installed at JB24, pins
9 & 10.
Once enabled (Locked), the functionality of the Event Logger
conforms to Canadian regulations as specified by Measurement
Canada. Several key requirements include:
• After the Event Logger Lock is selected, the lock is permanent,
i.e. it cannot be changed back to “Unlocked”
• When the number of event records in memory reaches the
maximum of 500 records, the Event Logger information must be
downloaded to a computer before any additional instrument
changes are permitted
• New events are
automatically numbered sequentially, starting at
zero
•
Only changes that could affect “Billing” are recorded, all other item
changes are not logged.
Select: 0 - Unlocked --- Default
1 - Locked
Note: Instruments shipped to Canada are factory-set with the Event
Logger LOCKED
163 RATE HIGH ALARM
This item (163) indicates if a Corrected Volume Flow Rate
alarm was generated.
During a wake-cycle,
if the value at item
209 (Instantaneous Flow Rate) was greater than the value entered
at item 164 (Rate High Limit), an alarm is initiated
and is
indicated by placing dots on the LCD and “11111111” at item
163. “00000000” at item 163indicates there is no High Flow
Alarm. The alarm indicators will remain active until manually
cleared (by software) or automatically when RBX (item 165) is
enabled.
This alarm can be disabled by setting the value at item
164 to its highest value of “99999.99”.
Default = 00000000
164 RATE HIGH LIMIT Upper limit for High Flow Rate Alarm (item 163), initiates an
alarm if exceeded.
Default = 99999.99
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