Related Manuals for Apera Instruments SX736
Summary of Contents for Apera Instruments SX736
- Page 1 SX736 Portable pH/Conductivity/DO Meter User Manual APERA INSTRUMENTS (Europe) GmbH aperainst.de - 1 -...
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Page 2: Table Of Contents
Table of Contents Brief Instruction ......................- 3 - Technical Specifications ....................- 4 - About the Meter ......................- 5 - What’s in the kit ......................- 7 - Preparation ......................... - 8 - pH Measurement ......................- 9 - pH Electrode ........................ -
Page 3: Brief Instruction
Scan the QR code below to watch the tutorial video on Youtube. Brief Instruction Thank you for choosing Apera Instruments SX736 Portable pH/DO/conductivity Meter (will be called “the meter” in short in the following content). Before using the meter, please read this instruction manual carefully in order to help you properly use and maintain it. -
Page 4: Technical Specifications
Technical Specifications 2.1 pH Measurement range (-2.00 to 19.99) pH Resolution 0.1/0.01 pH Accuracy Meter: ±0.01 pH; Overall: ±0.02 pH Input current ≤2×10 Input impendance ≥1×1012 Ω Stability ±0.01 pH/3h Temp. compensation range (0 to 100) °C (automatic) 2.2 mV Measurement range (mV/ORP/EH) -1999mV to 0 to 1999mV Resolution... -
Page 5: About The Meter
Response time ≤30s (25°C, 90% response) Temp. compensation range (0 to 45) °C (automatic) Salinity compensation range (0 to 45) ppt (automatic) Barometric pressure compensation range (66 to 200) kPa (manual) Automatic calibration Air saturated by water; water saturated by air Electrode type Polarographic 2.5 Other Technical Parameters... - Page 6 ④ —— Measurement unit ⑤ —— Temperature measurement value and unit ⑥ —— Measurement stabilization icon ⑦ —— Electrode calibration indication icon ⑧ —— Indication icon of low battery power; appears when the voltage is less than 2.6V, calling attention to replace the batteries. 3.2 Keypad The meter has 5 operation keys in total.
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Page 7: What's In The Kit
5 seconds, CLr will show up for 2 seconds, meaning that all the In data recalling mode, hold saved data have been eliminated. Then the meter will return to measurement mode. What’s in the kit SX736 pH/ORP/Conductivity/DO 201T-S plastic pH/ATC three-in- DO503 membrane cap (DO meter *1... -
Page 8: Preparation
Preparation What you need in addition to what’s in the kit: Pure water (RO, distilled or deionized water) for rinsing off the electrode. - 8 -... -
Page 9: Ph Measurement
pH Measurement Short press to turn on the meter. Connect 201T-S pH electrode to the meter (See Section 5 for connection tutorial). The meter will automatically enter pH measurement mode. 6.1 pH Electrode The meter comes with the 201T-S 3-in-1 combination electrode with a built-in temperature sensor, which enables automatic temperature compensation. -
Page 10: Notes About Ph Calibration
6.2.3. Rinse off the pH electrode in pure water and remove excess water, then insert it into the pH 4.00 buffer solution, make a quick stir and then hold it still. When the reading is stabilized and stays on screen, short press again to finish the 2 point calibration. -
Page 11: Sample Test
In the following cases, the meter must be re-calibrated: The electrode hasn’t been used for a long time or a new electrode is connected. • • After measuring strong acid (pH<2) or strong base (pH>12) solutions. After measuring fluoride-containing solution and strong organic solution. •... -
Page 12: Parameter Setting
Raw meat LabSen 761, LabSen 763 Micro sample testing LabSen 241-6, LabSen 241-3 Cosmetics, skincare products LabSen 851-1, LabSen 851-S Soil LabSen 551, LabSen 553 Solid or semi-solid samples (cheese, dough, fruits, meat LabSen 251, LabSen 751, LabSen products, etc.) Strong acid solutions, HF containing solutions (HF LabSen 831 concentration<1%) - Page 13 6.6.1 pH buffer solution series selection (P1) (a) Long press , meter enters P1 mode: see picture (4-2). (b) Press to choose buffer solution series: (U.S.A series) — 1.68, 4.00, 7.00, 10.01 and 12.45 pH (NIST series) — 1.68, 4.01, 6.86, 9.18 and 12.45 pH (China series) —...
- Page 14 6.6.4 Temperature unit °C/°F setting (P4) (a) Short press in P3 to enter P4, see picture (4-5). (b) Press to choose temperature unit: °C or °F. (c) Press to enter next parameter setting or press to confirm and return to measurement mode. 6.6.5 Backlight display time setting (P5) (a) Short press...
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Page 15: Cleaning Ph Electrode
6.7 Cleaning pH Electrode 1) The measurement is only as accurate as the electrode is clean. Always thoroughly rinse off the electrode before and after each test with pure water. 2) For tough contaminants, soak the electrode in Apera electrode cleaning solution (AI1166) for at least minutes. -
Page 16: Notes About Ph
6.9 Notes about pH 1) Never store pH electrode in pure water as it will damage the electrode. Always store the electrode in 3M KCL soaking solution (AI1107). 2) If you find any air bubble in the glass bulb of the pH sensor, simply shake the probe with force for a few times to remove it. -
Page 17: Sample Test
7.3 Sample Test Screw off the storage bottle. Rinse the electrode with pure water. Shake off excess water or blot-dry with clean tissue or kimwipe. Stir the electrode for a few seconds after it’s dipped into the sample solution and then hold it still. -
Page 18: Parameter Setting
Table (6-1) Measurement range 0.05 to 20 μS/cm 0.5 μS/cm to 200 mS/cm Electrode constant K = 0.1 (flow test) K = 1.0 12.88 mS/cm Calibration solution 84 μS/cm 84 μS/cm 1413 μS/cm 111.9 mS/cm Calibration icon Note: When you choose to use DJS-0.1-S pure water conductivity electrode (sold separately, K=0.1, no temperature sensor built in), you can use Manual Temperature Compensation mode: long press temperature value starts flickering, press to change the value of temperature and then... - Page 19 7.6.1 Conductivity calibration solution series selection (P1) (a) Press , meter enters P1 mode, see picture (6-3); (b) Press to choose the standard solution series: —U.S.A. series — China series (c) Press to enter the next parameter setting or press to return to measurement mode.
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Page 20: Temperature Compensation Coefficient
(c) Press to enter the next parameter setting or press to return to measurement mode. (d) If you need to do calibration for other conductivity electrode whose constant is not 1.0, e.g. conductivity electrode with constant 10.3, you should enter constant setting P2 to set the constant to be “10”, then enter P5 mode and set the constant to be 10.3. -
Page 21: Notes About Conductivity Parameter Setting
7.8 Notes about conductivity parameter setting When the content of conductivity parameter setting is different to the factory default setting, the correspondant code icon will appear on the upper right of LCD in measurement mode. When more than one conductivity parameter is changed, only one code will be displayed. You need to enter the parameter setting and check the settings content or restore the meter to factory default setting and set the needed parameters again. -
Page 22: Do Calibration (Saturated Oxygen)
1 — DO500 DO electrode 2 — Calibration sleeve cap 3 — Calibration sleeve 4 — Water stored sponge 5 — Calibration sleeve bottom lid 6 — Temperature electrode 7 — Membrane cap 8 — Cathode (gold) 9 — Anode (silver) 10 —... -
Page 23: Notes About Do Measurement
8.3.2 Measurement DO in static water Power on the meter. Place the DO electrode into water. The water surface level should be higher than the location of the temperature electrode. The angle for the electrode and water should be 45° to 75°. Keep swirling the electrode in water slowly (>5cm/s) for 1 to 5 minutes. -
Page 24: Zero Oxygen Calibration
8.5.3 Clean the gold cathode When the gold cathode is contaminated, use the polishing paper (DO504) to lightly wipe the gold cathode (along the arc of the gold surface); clean the gold surface with a clean tissue or kimwipe afterwards; rinse off the electrode with distilled water, then shake off excess water;... -
Page 25: Salinity Calibration
2) Place the electrode into zero-oxygen water, press to enter calibration mode. When the stabilized reading is 0.02 ppm to 0.15 ppm after 5 minutes, press again to finish the calibration, then flashing 0.0% will show up, the calibration will be finished in several seconds and 0.00 ppm will show up. -
Page 26: Parameter Setting
8.9 Parameter Setting 8.9.1 DO parameter settings (Chart 4-1) Prompt Mark Parameter Setting Items Code Parameter 0.01/0.1(mg/L and ppm) Resolution selection 0.1/1(%) Salinity calibration Barometric pressure setting Temperature unit setting °F/°C Backlight display time setting 0-1-3-6 min Auto power off time setting 0-10-20 min Restore to producer setting OFF-On (shut-set) - Page 27 8.9.4 Barometric pressure setting (P3) ) In P2, short press to enter P3, the screen displays a barometric pressure measurement value set earlier (unit is kPa), such as 101.3 kPa, shown as picture (4-4). (b) Press to adjust according to standard barometric pressure value, and long press them to quickly change the value.
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Page 28: Limited Warranty
We warrant this instrument to be free from defects in material and workmanship and agree to repair or replace free of charge, at option of APERA INSTRUMENTS (Europe) GmbH, any malfunctioned or damaged product attributable to responsibility of APERA INSTRUMENTS (Europe) GmbH for a period of THREE YEARS (SIX MONTHS for the electrode) from the delivery. -
Page 29: Appendix
10 Appendix Appendix 1 Content of Saturated Oxygen in Water at Different 10.1 Temperature Temperature Temperature Temperature °C mg/L °C mg/L °C mg/L 14.64 9.86 7.30 14.22 9.66 7.18 13.82 9.46 7.07 13.44 9.27 6.95 13.09 9.08 6.84 12.74 8.90 6.73 12.42 8.73... - Page 30 10.2 Appendix 2 Content of Saturated Oxygen at Different Barometric pressure Barometric pressure Dissovled Oxygen Concentration (mg/L) mmHg 15°C 25°C 35°C 100.00 9.94 8.14 6.85 100.13 9.96 8.15 6.86 100.26 9.97 8.16 6.87 100.40 9.98 8.17 6.88 100.53 9.99 8.18 6.89 100.66 10.00...
- Page 31 10.3 Appendix 3 Content of Oxygen at Different Altitude Barometric Barometric Altitude Altitude pressure pressure Foot meter mmHg mg/l Foot meter mmHg mg/l 101.3 8.25 7500 2287 77.1 6.28 99.34 8.09 8000 2439 75.63 6.16 1000 97.6 7.95 8500 2591 74.44 6.06 1500...
- Page 32 APERA INSTRUMENTS (Europe) GmbH Address: Wilhelm-Muthmann-Str.18 42329 Wuppertal, Germany Tel: +49 202 51988998 Email: info@aperainst.de Website: aperainst.de - 32 -...
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