Date of Issue: May. 22, 2017
Document No.: NIC-600-2240-02
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7.
Blank measurement
1) If the blank of the LP-WA is non-negligible in a low-concentration measurement
(≤0.1μg/m3), connect nitrogen gas system or a clean air compressor to the LP-WA to
adjust the pressure, perform the sampling for the same period of time, and then subtract
the obtained value as the blank value, from the actually measured value.
2) Select [LPG. Blank] from the sample names.
8.
Change of the sample gas cylinder
Whenever a cylinder is changed, any residual pressure between the cylinder and the regulator
must be removed after the last measurement.
Select [Relieve Residual Pressure] or the icon on the right end. The pressure is then
automatically relieved.
