Apera Instruments SX823-B User Manual

16
6.5 Sample test
6.5.1. Rinse conductivity electrode in pure water, allow it to dry, and submerge it in the sample solution.
Stir the solution briefly and allow it to stay in the sample solution until a stable reading is reached and
icon appears on LCD, then get the reading value, which is the conductivity value of the solution.
6.5.2. Press key to switch to TDS.
6.5.3. During the process of calibration and measurement, the meter has self-diagnosis functions,
indicating the relative information as below: chart – 11.
Chart – 11 Self-diagnosis information of conductivity measurement mode
Display Icons
Contents
Checking
Wrong conductivity calibration solution
or the meter recognition of calibration
solution out of range.
1. Check whether conductivity calibration
solution is correct.
2. Check whether the meter connects the
electrode well.
3. Check whether the electrode is damaged.
Press key when measuring value is
not stable during calibration.
Press key after icon appears.
During calibration, the measuring value is
not stable for ≥ 3 min.
1. Shake the electrode to eliminate bubbles in
electrode head.
2. Replace with new pH electrode.
6.5.4 Factory default setting
For factory default setting, please refer to parameter setting P2.5 (Item 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. Conductivity electrode maintenance
6.6.1. Always keep the conductivity electrode clean. Before taking a measurement, rinse the electrode in
pure water. It is recommended to rinse it again in the sample solution. When submerge the electrode in
solution, stir the solution briefly to eliminate air bubbles and allow it to stay until a stable reading is reached.
For conductivity electrode which is drily stored, soak the electrode in pure water for 5-10 minutes. Rinse
the electrode in pure water after measurement.
6.6.2. The interaction 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.

Apera Instruments SX823-B Specifications

General

Brand	Apera Instruments
Model	SX823-B
Category	Measuring Instruments
Language	English