- Brand: Orion
- Series: PH meter
- Model: PH-280
- Color Classification: PH-280 [0.01 precision, replaceable electrode, ATC Warming, automatic correction [0.01] PH-618 precision backlight, ATC temperature compensation, automatic calibration, replaceable electrode [0.1] PH-058 precision backlight function, ATC Warming, manual calibration, non-replaceable electrode tip] PH-280 PH-618 tip
Members accesible friend Note: PH meter default test range is 0-14, although the test PH meter range is 0-14, but each test pen has the best use of the environment, use a test pen under the best circumstances the life is the best. any shop a pen pH meter test is not suitable for high temperature and strong acid, viscous liquid such as, if you want to test the strong acid or hot liquids, consulted the customer purchase dedicated acid tester! We all additional electrodes do not participate in the warranty, can host one year warranty, the repair is to repair the product refers to (such as buttons, keyboard, etc.). can not repair refers to glass products (such as tip) repair is not free replacement, we recommend, please carefully shot, thank you! PH meter is within the recommended range 4-10PH, temperature 10-50 ℃!!
Special Notice: G20 summit is about to begin, for various reasons, express ban received potassium chloride powder, potassium chloride powder belonging to contraband, now began to take the pH meter, not the distribution of potassium chloride, and the suspension of shipping activities, all SF express, recommendations, please carefully shot, also hope you forgive the inconvenience, thank you!
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One is always on a strange road, watching strange scenery and listening to strange music, and then in a casual moment, you will find that the things you try hard to forget really so forgotten.
One is always on a strange road, watching strange scenery and listening to strange music. Then one day, you will find that the things you try hard to forget are already gone.
Third, the operation guide
1, remove before using PH meter below the electrode protective cap, the PH penthouse electrode stir in pure water or distilled water, thoroughly washed after drying, press ON / OFF power, double the PH electrode into the test solution, slightly after the addition shaking still, until a stable reading digital PH, PH is the value of the measured solution.
2, PH meter factory default temperature unit is ℃, temperature units for conversion, proceed as follows: at PH meter off, hold CAL hold, then press ON / OFF power on the right side of the display appears to be: when '℃' or 'F', release the CAL, press CAL select 'F' or '℃', press HOLD saved selected, then the screen will show 'SA' symbol indicates the selected temperature unit has been saved The instrument automatically enter the normal measurement mode.
3, instrument calibration: prepare standard buffer 6.86PH or 7.00PH, according to the ON / OFF power, double the PH electrode into standard buffer configured appropriately after shaking still, until PH digital stable, press CAL about 3 seconds, CAL symbol is displayed, then release the CAL, PH meter will automatically recognize the standard buffer value at the current temperature, about one second to display the current measured value, and then displays the standard buffer value at the current temperature is displayed after two seconds' SA 'symbol, it indicates that the memory calibration results and show' END 'symbol indicates that the calibration has been completed, one second after the return to normal measurement. If pressed CAL, one second after the show' END 'symbol, which indicates failure or standard buffer electrode aging, press any key to exit, restore measurement mode. Please confirm whether standard buffer or normal electrode calibration other buffers, the method above.
When PH meter calibration, no show 'END' symbol, do not count out from the PH standard buffer. Use standard buffer and the correct methods of operation when PH meter calibration, improper calibration will increase large measurement error! in a non-standard calibration status, do not press the CAL may cause erroneous instrument calibration, the instrument does not work or cause measurement error seriously overweight.
4, the instrument Press ON / OFF power, display 'MEAS' symbol on the display during normal operation, the meter is in measurement mode, press HOLD to lock the current data on the display, and will appear on the display 'HOLD ' Symbol, then unlock HOLD mode.
5, the current measurement instrument with memory function, complete the measurement press the HOLD display appears to be 'HOLD ' When the sign off, the next time the power measuring instrument automatically displays the last measured value, press HOLD clear the last measurement value.
6, over range display, when the PH value is below '0' or higher than '14' is, PH display will show: 'L ---' or 'H ---' when the temperature is too low or too high, temperature display will show the 'L' or 'H'
7, Low Voltage Tip: When the battery symbol is displayed, indicating that the battery voltage is insufficient, replace the battery as soon as possible, do not mix old and new batteries.
1, try to choose the instrument calibration liquid PH worth close to the measured standard buffer solution, so you can make more accurate measurements.
Take the number of instrument calibration in the test solution, the electrode performance and accuracy required to measure the high-precision calibration measurement should be timely, the general accuracy of measurement, calibration by a continuous use for a week or longer, or prior to use electrode into the test solution PH value is close to the standard buffer solution, if the error is beyond your accuracy requirements must be recalibrated.
2, in the following cases the instrument must be recalibrated:
AThe electrode or electrodes new for long unused.
B, After measuring the concentration of acid or alkali concentration measured later.
CMeasuring fluoride-containing solution and the organic solution after the doctrinal.
3, please do not use the PH meter liquid inserted too deep, so long as the liquid can not be over-glass electrode. Before using special attention when PH electrode retaining ring loose, loose if PH electrode fixing ring, PH meter test course the liquid may enter inside the instrument cause a malfunction.
4, sensitive glass bulb PH composite electrode must be in wet conditions in order to maintain an activated state, and normal test. If PH electrode long-term drying, there will be slow response, poor accuracy is not normal. Therefore, waterproof bottom electrode cap tip of the pen PH meter PH-10/100, there is a storage sponge, the user must always keep the sponge moist sponge when dry, can add a drop PH4.00 standard buffer solution ( Do not let the solution flow), and the electrode protective cap tightly, so PH electrode in wet conditions remain activated state.
5, PH composite electrode long unused If you have dried before use should be soaked for several hours in 3.3MOL / L KCL solution, or buy a dedicated electrode soaking solution.
6, PH electrode tip sensitive glass bulb, not in contact with a hard object, any damaged hair and rub the electrode will fail before the measurement and after the measurement should be washed with pure water electrodes to ensure accuracy in viscous again after the sample was measured, the electrodes need to use water repeatedly wash several times to remove the sticky film on glass samples, or to wash with a suitable solvent, and then water wash solvent.