Portable Conductivity Meter ES

Conductivity measurement

■

Conductivity measurement

The conductivity cell can be used to measure the conductivity, salinity, TDS, and resistivity of a sample. Salinity, TDS, and resistivity are calculated from the measured value of conductivity.

Press the key to select the measurement parameter (“ Changing the measurement parameter ” (page 7)).

The basic steps are the same for all measurement parameters, however, some settings and operations are only valid for specific measurement parameters. Select the settings and perform the steps that show the mark of the parameter you want to measure.

< Examples >

: Perform for conductivity measurement.

: Perform for salinity measurement.

: Perform for resistivity measurement.

: Perform for all measurement parameters.

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Conductivity measurement

●

Setting the instrument

• Setting the temperature display (default: ATC)

When a conductivity cell with a temperature sensor is used, or a conductivity cell without a temperature sensor is used with a temperature electrode, the automatic temperature measurement function can be used. During measurement, the temperature sensor measures the temperature of the sample and displays the result on the instrument. If automatic temperature measurement function is not used, or the temperature connector is not connected to the instrument, the temperature set in the instrument is displayed.

1. Press the key to enter the setting mode.

2. Select the "TEMP" (temperature setting) and then press the key.

key

3. Press the keys to select the "ATC" (automatic temperature measurement) or the "MTC" (manual temperature display) and then press the key.

4. If you select the "MTC", enter the temperature to be displayed and then press

< When MTC is set >

key

18 HORIBA

Conductivity measurement

• Setting the conductivity unit (default: S/m)

You can select the conductivity unit from three types, S/m, S/cm, mS/cm FIX (fixed at mS/cm). Select the unit depending on your application.

When measuring resistivity, these units correspond to Ω·m, Ω·cm, Ω·cm (for mS/cm

FIX).

1. Press the key to enter the setting mode.

2. Press the keys to select the "UNIT (COND)" (conductivity unit setting) and then press the key.

key

key

3. Press the keys to select the unit and press the key.

key key

key

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Conductivity measurement

• Setting the salinity unit (default: PPT)

You can select the salinity unit from PPT or %. Select the unit depending on your application.

1. Press the key to enter the setting mode.

2. Press the keys to select the "UNIT (SAL)" (salinity unit setting) and then press the key.

key

key

3. Press the keys to select the unit and press the key.

key

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Conductivity measurement

• Setting the cell constant (default: 1.000×100 m

-1

)

A cell constant is set for each conductivity cell. To measure conductivity correctly, the cell constant of the conductivity cell must be set in the instrument.

1. Press the key to enter the setting mode.

2. Press the keys to select the "CELL" (cell constant setting) and then press

key

key

3. Press the keys to select the digit number of the cell constant of the conductivity cell and then press the key.

4. Press the keys to enter the number of the cell constant of the conductivity cell and then press the key.

key

Note

・

The unit used for the cell constant corresponds the unit set in “ Setting the conductivity unit

(default: S/m) ” (page 19).

・

Match the unit indicated on the conductivity cell to the unit set in the instrument.

　 　 　 　

10 m

-1

⇔

0.1 cm

-1

　 　

100 m

-1

⇔

1 cm

-1

　 　

1000 m

-1

⇔

10 cm

-1

・

The cell constant may fluctuate depending on conditions of use. Check and calibrate the conductivity cell about once a year (“ Checking and calibrating the conductivity cell ” (page

47)).

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