7.
Read and record the
value when stable.
Note: To print or send
(via RS232) a
measurement record,
push PRINT.
Measurement techniques
Measurements may be made with different operation mode settings and
optional accessories.
Calibrate the instrument whenever the sample cell pathlength is
changed.
Manual or automatic ranging
The manufacturer recommends that ranging be set to automatic for most
measurements.
The setting can be changed at any time during sample measurement.
Push
RANGE
repeatedly to step the instrument from automatic ranging
to manual ranging and then scroll through the manual range settings.
"MANUAL" is shown above the Range Mode label on the instrument
when manual ranging is selected. "AUTO" is shown below the Range
Mode label on the instrument when automatic ranging is selected.
Notes:
• When manual ranging is selected, the display flashes all 9s when the
sample being measured is greater than the selected range. The
display flashes all 0s when the sample measured is less than the
selected range.
• When automatic ranging is selected, the display flashes 9s when the
sample is greater than the maximum range of the instrument. The
display flashes 9s when Ratio is off and the measurement is greater
than 40 NTUs (268 nephelos or 9.8 EBCs). Turn Ratio on to increase
the range.
• When automatic ranging is selected, the display flashes all 0s when
the measurement is less than the range of the instrument or a
negative value. Calibrate the instrument. When measuring color,
absorbance or transmittance, set the zero reference point again.
Signal averaging on or off
Signal averaging corrects for reading fluctuations that are caused by
random drifting particles in the sample. When signal averaging is on, an
average reading is calculated every 3 seconds and shown on the
display.
The manufacturer recommends that signal averaging be on for most
measurements.
Push
SIGNAL AVG
to turn signal averaging on or off. The SIGNAL AVG
light turns on when signal averaging is on.
English
15
Summary of Contents for Lange 2100AN
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Page 288: ...12 2005 2002 96 IECS 003 A IECS IECS FCC 15 A 15 FCC 1 2 15 FCC 1 2 3 4 5 288...
Page 292: ...1 Calibration Setup 1 NTU NEP EBC CU T Abs 292...
Page 296: ...StablCal 1 302 2 USEPA 302 3 4 CAL Zero CAL Zero 00 NTU 5 0 1 NTU 6 296...
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Page 300: ...7 RS232 PRINT RANGE MANUAL AUTO 40 NTU 268 nephelo 9 8 EBC 300...
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