LumaSense Technologies 3434i SF6 Leak Detector - Manual (Page 184)

Chapter 13
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BE6028-14 3434i SF6 Leak Detector LumaSense Technologies A/S
Page 184 of 191
SIGNIFICANT CHANGE IN CALIB. FACTORS
This message is associated with the span calibration of one (or more)
of the filters.
The above message indicates that the Conversion factor calculated
during span calibration of a particular filter deviates more than 15%
from the Conversion factor calculated during the last span
calibration of this filter. If you are absolutely sure that the previous
span calibration of this filter was correctly performed then this
message could indicate:
1. That you have “entered” the wrong concentration for the span-gas
in the span calibration set-up.
2. That the concentration of your span gas is not correctly quoted on
its “Analysis Certificate”.
3. That there is a leak in the tubing/fittings in your calibration
equipment, which alters the concentration of the span gas
reaching the cell.
HIGH CONC. SPAN MEASUREMENT TOO LOW
This message is associated with a two-point span calibration task.
The above message indicates that the signal measured during span
calibration, when the high concentration of span gas is in the cell, is
less than 15µV. This means that the “high” concentration of span gas
is too low.
LOW CONC. SPAN MEASUREMENT TOO LOW
This message is associated with a two-point span calibration task.
The above message indicates that the signal measured during span
calibration, when the low concentration of span gas is in the cell, is
less than 3µV. This means that the “low” concentration of span gas is
too low.