Doc No. 105408 Rev C, RMLD-CS Operator Manual
RMLD-CS
Operator’s Manual
Manual
© 2021 Heath Consultants Incorporated. All rights
reserved.
33
The Real Time mode is most effective when used at shorter distances to help verify a low level detection or
to help isolate the highest gas concentration location.
To verify a low level leak, the following procedure should be used:
1.
Stand back about 10 feet from the leak with the wind to your back if possible.
2.
Sweep the laser back and forth across the leak while maintaining a constant distance.
3.
Listen for a consistent increase in beep frequency as the beam sweeps through the leak. Very
small leaks will have just a slight increase in beep rate.
To isolate the spot with the highest concentration, the following procedure should be used:
1.
Stand back about 10 feet from the leak with the wind to your back if possible.
2.
Sweep the laser starting from the up-wind side, in and around the leak area.
3.
Listen for the fastest beep frequency.
4.
Change your angle slightly and re-scan the leak zone.
5.
If the location with the fastest beeping is consistent, then the location of the surface leak is
at that spot.
6.
If the beeps are not consistent then keep working the area. The gas plume may be drifting
around causing inconsistent readings. In some cases, the gas plume may be large enough that
localization is not very accurate.
Alarm Level
To change the Alarm Level, press the MENU button, scroll down and select ALARM LEVEL. Press the down
arrow button to increase the digit value. The values are circular and will wrap around. When the digit
value is as desired, press SELECT to move to the next digit position. When done, press the return or back
button.
NOTE:
The higher the Alarm Level setting is, the higher the concentration of methane that will be needed
to trigger the DMD alarm.
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