Hanna Instruments HI 9829 Instruction Manual page 31

6.2.5 Resistivity Unit
The user can select resistivity from one of the fol-
lowing measurement units: Ω·cm, kΩ·cm or
MΩ·cm. Resistivity is calculated from the conduc-
tivity measurement. The default unit is MΩ·cm.
6.2.6 Seawater Sigma Unit
This parameter is used for seawater analysis. It is
calculated from the conductivity measurement and
depends on water pressure, temperature and sa-
linity. The default value is σ
Users can select the reference temperature: σ
and σ (i.e. current temperature, 0°C or 15°C).
15
6.2.7 Distance Unit (GPS unit)
Select between m - km or ft - mi. This unit will be
associated with position. The default values is m -
km.
6.2.8 EC Resolution
The user can configure the conductivity resolu-
tion with one of the following options:
Auto: the meter automatically chooses the range
to optimize the measurement. Readings can be in
µS/cm or mS/cm.
Auto mS/cm: the meter automatically chooses the
range to optimize the measurement, readings will be in mS/cm only.
1µS/cm, 0.001 mS/cm, 0.01mS/cm, 0.1mS/cm or 1mS/cm: the meter will not
autorange, the measurement will be displayed with the selected resolution. The
default value is Auto.
6.2.9 Absolute EC Resolution
Absolute conductivity displays the conductivity without temperature compensa-
tion. See 6.2.8 EC resolution for resolution details.
Note A small letter "A" added to the µS/cm or mS/cm unit refers to an abso-
lute conductivity value (i.e. a conductivity reading with no temperature
compensation).
6.2.10 TDS Resolution
The user can configure the TDS resolution with one of the following options:
Auto: the meter automatically chooses the range to optimize the measurement,
readings can be in ppt or ppm.
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