Hitachi ZA3000 Series Instruction Manual page 67

3.3 Monitoring of Measurement Process
(5) Instrument Monitor Bar
Analyte element, message and analysis mode are
displayed. In addition, the following items are displayed.
 ABS
Absorbance signal (background corrected) is displayed
in real time.
 REF
Reference signal (background absorption) is displayed
in real time.
 Status
The present status of spectrophotometer (such as
Ready, measuring and stop) is indicated here.
 ID and Name
The ID and name of the sample under measurement are
indicated here (only after input).
 PMT voltage
The present voltage applied to the photomultiplier is
read here. A lower photomultiplier voltage indicates a
higher light intensity, so this voltage is useful as a
reference for judging a change in lamp energy or a
wavelength deviation. If the PMT voltage increases,
check the line spectrum of the hollow-cathode lamp.
Click [Display Line Spectrum] in the [Check Instrument]
menu. If the line of the line spectrum is waving, change
the lamp with a new one.
 Burner Height
The presently set burner height is indicated.
Since the burner height is not set automatically, make
adjustment to the indicated burner height.
Indicates the flame status. A flame is indicated during
combustion.
Indicates the cooling water status. A red indication
appears when the water flow is insufficient.
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