6.5.4. Factory default setting
For factory default setting, please refer to parameter setting P2.7 (Section 7.4). With this function, all
calibration data is deleted and the meter restores to the theory value. Some functions restore to the original
value (refer to appendix -1). When calibration or measurement fails, please restore the meter to factory
default setting and then perform re-calibration or measurement. Please note once set the factory default,
all the data deleted will be irretrievable.
6.6 Maintenance of the Conductivity Electrode
6.6.1. Always keep the conductivity electrode clean. Before taking a measurement, rinse the electrode in
distilled water. It is recommended to rinse it again in the sample solution. When dipping the electrode in
solution, stir the solution briefly to eliminate air bubbles and allow it to stay until a stable reading is reached.
Conductivity electrodes are usually stored dry. For conductivity electrodes that haven’t been used for a
long time, users can soak the electrode in 12.88 mS calibration solution for 5-10 minutes, or to soak it in
tap water for 1 to 2 hours. Rinse the electrode in distilled water after measurement.
6.6.2. The sensing rod of Model 2301T-S conductivity electrode is coated with platinum black to minimize
electrode polarization and expand measuring range. The platinum black coating adopted our special
processing technology, which improves the electrode performance and the firmness of the coating. If the
platinum black electrode is stained, gently clean the electrode with soft brush in warm water containing
detergent or alcohol.
7 PARAMETER SETTING
7.1 Main Menu
In the measurement mode, press key to enter in P1.0, then press or to switch main menu:
P1.0→P2.0→P4.0. Please refer to Figure - 7.
P1.0: pH parameter setting menu,
P2.0: Conductivity parameter setting menu,
P4.0: Basic parameter setting menu.
7.2 Sub-Menu
7.2.1 In P1.0, press to enter the submenu P1.1 for pH setting, press and to change submenu:
P1.1→P1.2→ … →P1.5. See Figure-7 for details.
7.2.2 In P2.0, press to enter the submenu P2.1 for conductivity setting, press and to change
submenu: P2.1→P2.2→ … →P2.7. See Figure-7 for details.
7.2.3 In P4.0, press to enter the submenu P4.1 for basic parameter setting, press and to
change submenu: P4.1→P4.2→…→P4.8. See Figure-7 for details.
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