Raytech TraceTek TTDM-128 - Specific Leak Event Scenarios

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TTDM-128
User Manual
HINT: Use the Events History to track the events between the “rst leak” and the “most
recent event.” See “The Events History Log” section on page 27.
ADDITIONAL LEAK
If liquid contacts sensing cable at a signicant distance from the initial leak, the module
will re-alarm however it will indicate that this realarm leak distance could indicate a new
leak rather than a growing leak. In this case, the TTDM shows the re-alarm location in
square brackets:
CH01 USER_LABEL_0001
Leak 370 ft
Re-Alarm [205]
HH:MM DD-MON-YYYY
Brackets indicate that the value shown requires interpretation; when an additional leak
occurs, the value represents the “electrical center” of the leaks.
SERVICE-TO-LEAK ALARM
Although the TTDM-Plus and TTSIM system can continue to monitor a channel when a
Service Required alarm is in effect, the accuracy of location may be impaired.
Example:
CH01 USER_LABEL_0001
Service Req’d [257]
HH:MM DD-MON-YYYY
If sensing cable on that SIM channel detects a full-edged leak before service is
performed, the TTDM-128 displays a new leak alarm. If the location measured is nearly
the same as the earlier Service Required alarm, the display would appear as below:
CH01 USER_LABEL_0001
Leak 257 ft
HH:MM DD-MON-YYYY
If the leak location is different from the earlier Service Required alarm, the TTDM-128
shows a slightly different display:
CH01 USER_LABEL_0001
Leak [190]
HH:MM DD-MON-YYYY
The TTDM-Plus indicates the uncertainty about the leak location (due to the prior Service
Required alarm condition) by showing the location in brackets.
detected signicant movement of the leak (that is, a movement greater than the re-alarm
The LCD now displays the rst leak (on the second line of the display) and the most
recent alarm on the third line. The rst leak recorded on the SIM channel is likely to be
the 