Hanna Instruments PCA 300 Series User Manual
Page 42
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DIAG
DIAG
3.B
Enter code 112 using the and keys.
3.C
Press DIAG; “– –” will be displayed and the analyzer
and the multimeter will display the current mid-range
recorder output limit.
3.D
Press DIAG again to quit the mode.
ADJUSTING THE LIGHT SOURCE
If the sample blank is highly colored or turbid, the light level
may be inadequate for a proper operation. This situation is
indicated by the activation of the ana-
lyzer system alarm relay and the
appearance of “E09” on the display.
Note
This condition can also be caused by failure of the LED light
source.
It may be possible to compensate for inadequate light level
by adjusting the light source intensity, through the small ac-
cess holes provided. It is not necessary to disassemble the
plastic enclosure to access this trimmer.