Operation; Battery Installation/Replacement - Extech Instruments 341350A User Manual

Operation
Battery Installation/Replacement
Open the battery cover by inserting a small coin into the latch slot and pressing downward. The
cover will release in the direction of the arrow. Install the new battery and replace the cover.
pH Measurements
1.
Press the POWER button to turn the meter ON (the meter will cycle through a self‐check).
2.
Press the MODE/CAL button until the PH icon switches on.
3.
Press the UNIT/SET button to select ºC or ºF.
4.
Connect the pH electrode to the side pH BNC connector.
5.
Adjust the ▲▼buttons to match the temperature of the solution (or use the external
temperature probe to do so).
6.
If required, calibrate the electrode (see pH Calibration).
7.
Place the electrode in the sample solution and read the pH value on the display.
8.
When all measurements have been taken, unplug the electrode and rinse in distilled water;
then shake and store it in the wetting cap with 4.0 M KCL or in a pH 4 buffer solution.
Conductivity/TDS/Salt Measurements
1.
Press the POWER button to turn the meter ON.
2.
Press the MODE/CAL button until the COND, SALT or TDS icon is displayed.
3.
Connect the conductivity electrode to the side conductivity connector.
4.
If required, calibrate the electrode (see Conductivity Calibration).
5.
Place the electrode in the sample solution and read the value on the display.
6.
When finished, unplug the electrode and rinse in distilled water.
ORP (mV) Measurements
1.
Press the POWER button to turn the meter ON.
2.
Press the MODE/CAL button until the ORP icon is displayed.
3.
Connect the ORP electrode to the side ORP BNC connector.
4.
Place the electrode in the sample solution and read the mV value on the display.
5.
When all measurements have been taken, unplug the electrode and rinse in distilled water.
6.
Store the probe tip in the wetting cap in a 4.0 M KCL or in a pH 4 buffer solution.
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