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Summary of Contents for Apera Instruments SX721
- Page 1 SX721 Portable pH/ORP 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....................- 3 - About the Meter ......................- 4 - What’s in the kit ......................- 6 - Preparation ........................- 6 - pH Measurement ......................- 7 - pH Electrode ...................... -
Page 3: Brief Instruction
Brief Instruction Thank you for choosing Apera Instruments SX721 Portable pH/ORP 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: About The Meter
2.2 ORP (mV) Measurement range (mV/ORP/EH) -1999mV to 0 to 1999mV Resolution Accuracy Meter: ±0.1% FS, Overall: ±15mV 2.3 Other Technical Parameters Data storage 200 sets Serial number, measurement value, measurement unit, and Data content temperature Power Supply Two AA alkaline batteries (1.5V x2) Meter: (65×120×31) mm/180g Dimensions and weight Complete Kit: (255 x 210x 50) mm/1380g... - Page 5 M+ — measurement value to be saved; RM — Saved data to be recalled; 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.
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Page 6: What's In The Kit
Then the meter will return to measurement mode. What’s in the kit 201T-S plastic pH/ATC three-in- 301Pt-S plastic ORP SX721 pH/ORP meter *1 one combination electrode *1 combination electrode *1 Carrying case *1 Screw driver *1 Spare AA batteries *2 pH standard buffer solution (pH 4.00, pH 7.00, pH 10.01) *1... -
Page 7: 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 8: Ph Calibration
6.1.2 Use the Electrode Screw off the KCL storage bottle, and put it aside (do not dump or spill the KCL solution). Rinse the electrode with distilled or deionized 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 test solution and then hold it still. -
Page 9: Notes About Ph Calibration
6.3 Notes about pH Calibration a) Keeping the freshness and cleanliness of calibration buffers is essential for accurate pH measurement. The small bottles of pH buffers come with the meter should be replaced within 3 months after opening. The new buffer solutions should be made by a legitimate lab supply manufacturer. -
Page 10: Recommended Ph Electrodes For Different Applications
calibration solution’s, the higher the accuracy of the measurement. This principle is recommended to follow for the best result. For example: If you have to test at 150°F, we recommend warming up the calibration solutions to the same temperature before performing calibration in order to get the most accurate readings. -
Page 11: Parameter Setting
* An 8-pin to BNC convertor (AI7103) is required to connect LabSen pH electrode to this meter. * Visit aperainst.de or contact us at +49 202 51988998 for more details. 6.6 Parameter Setting Table (4-1) Prompt Mark Parameter Setting Items Code Parameters USA (U.S.A series) - Page 12 function is set. 6.6.3 Ammonia added pure water pH temperature compensation setting (P3) (a) Short press in mode P2 to enter mode P3, see picture (4-4). (b) Press to choose (ammonia added pure water pH temperature compensation setting) or (c) Press to enter next parameter setting or press to confirm and return to measurement mode.
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Page 13: Cleaning Ph Electrode
6.6.7 Restore to factory default setting (P7) (a) Short press in P6 to enter P7, see picture (4-8). (b) Press to choose , meaning that the parameters have been restored to the producer setting mode, and return to measurement mode after 2 seconds. Returning to factory default setting is to restore the meter to theoretical value (zero potential pH is 7.00, slope is 100%), and set all the parameters to default settings. -
Page 14: Notes About Ph
6.8.3. — Electrode slope out of range (< 85% or >105%) When shows up: 1) Make sure there is no damage on the electrode’s glass bulb (if so, an electrode replacement is necessary). Check if there is air bubble inside the glass bulb. If so, shake the electrode with force for several seconds to remove the bubble. - Page 15 7.2 Notes about ORP ORP measurement does not require calibration. When the user is not sure about ORP electrode quality or measuring value, use ORP 222 mV standard solution to test mV value and see whether ORP electrode or meter works properly. Table-9 is the data of standard ORP solution for 222 mV. Table-9 °C 7.3 Clean and activate ORP electrode...
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Page 16: 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.
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