Brief Introduction Thanks for purchasing SX823-B pH/Conductivity meter. This meter is a perfect combination of the most advanced electronics technology, sensor technology, and software design, and is the most cost-effective portable electrochemical meter designed for industrial and mining enterprises, power plants, water treatment engineering, environmental protection industry, etc., especially ideal for general field use.
Instrument Description 3.1 LCD Display : HOLD ⑬ Diagram-2 (1) — Parameter mode icons (2) — Measurement reading (3) — Prompts of special display mode (4) — Units of measurement (5) — Temperature units (°C and °F) (6) — Units of pH and conductivity calibration value (7) —...
3.4 Reading Stability Display Mode When the measuring value is stable, smiley icon appears on LCD, see Diagram – 4. If the smiley icon does not appear or flash, please do not get the reading value or make calibration until the measuring value is stable.
4.2 pH Calibration Consideration 4.2.1. Standard buffer solution The meter uses two series of standard buffer solution: USA series and NIST series, 3 solutions for each series which are corresponding to calibration indication icons. Please see Chart - 3 for the two series of standard buffer solution.
4.3 pH Meter Calibration (with an example of three-point calibration) 4.3.1. First point calibration (a) Press key to enter into the calibration mode, “CAL 1” blinks at the top right of LCD and “7.00 pH” blinks at the bottom right of LCD, indicating using pH 7.00 buffer solution to make the 1 point calibration.
4.4 Sample Test 4.4.1. Rinse pH electrode in pure water, allow it to dry, and submerge it in tested solution. Stir the solution briefly and allow it to stay in the tested solution until icon appears on LCD and a stable reading is reached, which is the pH value of tested solution.
4.4.3. pH temperature principle Please note that the closer the temperature of the sample solution to the calibration solution, the more accurate the readings. 4.4.4. Factory default setting For factory default setting, please refer to parameter setting P1.4 (Item 7.3). All calibration data is deleted and the meter restores to the theory value (zero electric potential of pH is 7.00, the slope is 100%).
pure water, then submerge it in the soaking solution for 24 hours to renew it. 4.5.5. Clean contaminated glass bulb and junction (please refer to Chart - 6) Chart – 6 Clean contaminated glass bulb and junction Contamination Cleaning Solutions Inorganic metal oxide Dilute acid less than 1mol/L Organic lipid...
(b) For organic or lipid pollutant, clean the platinum surface with detergent, then wash it in pure water, then submerge it in the soaking solution for 6 hours. (c) For heavily polluted platinum surface on which there is oxidation film, polish the platinum surface with toothpaste, then wash it in pure water, then submerge it in the soaking solution for 6 hours Conductivity Measurement: 6.1 Conductivity Electrode Information...
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6.2.2. Calibration intervals (a) The meter is calibrated before leaving the factory and can generally be used right out of the box. (b) Normally perform calibration per month. (c) For high accuracy measurements or large temperature deviation from the reference temperature (25°C), perform calibration per week.
6.3 Conductivity Calibration (take 1413μS/cm as an example) 6.3.1. Rinse the electrode in pure water, allow it to dry, wash with a little of standard solution and submerge it in standard solution. Stir the solution briefly and allow it to stay in the solution until a stable reading is reached.
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.
Parameter setting 7.1 Main menu In the measurement mode, press key to enter in P1.0, then press to switch to main menu: P1.0→P2.0→P3.0. Please refer to diagram – 9. P1.0: pH parameter setting menu, P2.0: Conductivity parameter setting menu, P3.0: Basic parameter setting menu. 7.2 Submenu 7.2.1.
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Main menu of parameter setting Submenu of pH parameter setting P1.1 Select pH standard solution P1.2 Select resolution P1.3 Set stability criteria P1.4 Restore to factory setting Submenu of Cond. parameter setting P2.1 Select electrode constant P2.2 Select reference temp P2.3 Adjust temperature compensation factor P2.4 Adjust TDS factor...
7.3 Submenu of pH parameter setting (press key to switch) P1.1. – Select pH standard solution (USA-NIST) 1. In measurement mode, press key to enter in P1.0 mode, then press to enter in P1.1. 2. When press key, USA blinks, press key to select USA→nIS, press to confirm.
P2.3. – Adjust temperature compensation coefficient (0.00-9.99%) 1. Press key, 2.00 blinks, press key to adjust temperature compensation coefficient 0.00 – 9.99, press key to confirm. 2. After confirm the parameter, press key to enter in mode P2.4 or press key to return to the measurement mode.
APERA INSTRUMENTS, LLC, any malfunctioned or damaged product attributable to responsibility of APERA INSTRUMENTS, LLC for a period of two years from the delivery (a six-month limited warranty applies to probes). This warranty does not apply to defects resulting from actions such as misuse (violation of the instructions in this manual or operations in the manner not specified in this manual), improper maintenance, and unauthorized repairs.
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Adjust temperature P2.3 0.00~9.99 0.20 compensation coefficient P2.4 Adjust TDS factor 0.40~1.00 0.71 Restore to factory default P2.5 No-Yes setting ℃ P3.1 Select temperature unit ℃-℉ P3.0 Automatic Power-off Basic P3.2 10-20-30-On setup Parameters P3.3 Automatic Lock-up setup Appendix II: Abbreviation Glossary Code and Modes Prompts...
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Appendix III: Self-diagnosis information Icons Self-diagnosis information Conductivity Wrong pH buffer solution or the meter recognition of √ √ calibration solution out of range Press key when measuring value is not stable √ √ during calibration During calibration, the measuring value is not stable for √...
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