RKI Instruments GX-86A - Manual (Page 11)

Model GX-86A Instruction Manual
Page 10 Hayward, California (510) 441-5656
c. This message shows to verify that the data logger circuits are set
properly for accurate data collection according to date and time.
d.These messages show while the GX-86A checks itself for
proper operation. If a malfunction occurs, the display will alert
the user. (The display shows “HC” [hydrocarbons] for the
%LEL reading.)
d.The normal operating display shows after the “OK” message,
showing fresh-air concentrations for all gases. The GX-86A
sounds a double tone to indicate the instrument is in normal
operation.
2. Verify Operation
To easily verify correct operation of the GX-86A, breathe out over
the diffusion grill of the instrument. The O2 reading should drop
measurably before returning to normal.
To verify detection of combustibles use a controlled source of
flammable vapor, for example a bottle of isopropyl alcohol. The
DATE / TIME
MMM DD YY 00:00
SELF DIAGNOSIS
10 SECONDS TO GO
HC O2 H2S CO
STANDBY
HC O2 H2S CO
OK