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Conductivity Operation:
About Conductivity Measurement
XL20, 30, 50 and 60 meters
The XL20, XL30, XL50, XL60 meters allows you to measure conductivity, resistivity, TDS (total
dissolved solids) and salinity. Each mode is independent from one another and needs to be
standardized separately. However the basic procedure for standardization and measurement is
similar for each mode. This manual will focus on conductivity standardization and measurement
with the variations for other modes noted. Each measuring mode has four measuring ranges.
Conductivity:
0 to 200.0 µS, 200.0 µS to 2.000 mS, 2.000 to 20.00 mS, and
20.00 to 500.0 mS.
Resistivity:
0 to 20.00 KOhms, 20.00 to 200.0 KOhms, 200.0 KOhms to 2.000 MOhms,
and 2.000 to 100.0 MOhms.
TDS:
0 to 200.0 x TDS factor ppm, 200.0 x TDS factor to 2000 x TDS factor ppm, 2.000 x
TDS factor to 20.00 x TDS factor ppt, and 20.00 x TDS factor to 200.0 x TDS factor ppt.
Salinity:
0 to 0.094 ppt, 0.094 to 1.000 ppt, 1.000 to 11.50 ppt, and 11.50 to 90.00 ppt
Before measuring conductivity, resistivity, TDS or salinity, you will need to standardize the meter
using standards with known conductivity, resistivity, TDS or salinity values. This meter can
perform a single- or multi-point standardization. You will need to set your meter to single- or multi-
point calibration in the Setup mode for conductivity, resistivity, TDS or salinity. You may also use
the Setup mode set conductivity to auto standard recognition to recognize preset values (84 uS,
1.413 mS, 12.88 mS and 111.8 mS).
The meter will continually monitor the conductivity (resistivity, TDS or salinity) reading in this
mode and will not lock onto a single reading. However, once the reading has become stable,
STABLE
will be displayed (unless the Stable indicator has been turned OFF in the Setup mode).
Remember to setup your measuring mode parameters. Refer to the setup section for the
particular mode you will be measuring.
Conductivity measure screen
without standardization
Содержание XL 20
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Страница 138: ...127 Ion Operation Known Addition Method XL25 50 and 60 meters...
Страница 140: ...129 Ion Operation Known Subtraction Method XL25 50 and 60 meters...
Страница 142: ...131 Ion Operation Analate Addition Method XL25 50 and 60 meters...
Страница 144: ...133 Ion Operation Analate Subtraction Method XL25 50 and 60 meters...