Related Manuals for SATO KEIRYOKI SK-620PHII
Summary of Contents for SATO KEIRYOKI SK-620PHII
- Page 1 Instruction manual No. 6436-00 Handy type pH meter Model SK-620PHII (without probe type) 3-4, Kanda-kajicho, Chiyoda-ku, Tokyo 101-0045 Japan https://www.sksato.co.jp/en/ P.06...
- Page 2 This pH meter is designed to measure hydrogen ion concentration (pH) and temperature (liquid temperature). Do not use SK-620PHII for any other purposes. Read this instruction manual before using the SK-620PHII and keep it in a safe place for future references. Important safety instructions The SK-620PHII is not explosion-proof.
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Page 3: Auto Power Off
Auto temperature compensation Once the PHP-31 sensor probe is connected to your SK-620PHII, it will perform automatic temperature compensation to produce more accurate pH measurements. Various optional probes are provided Various optional probes are usable to wide variety of applications. - Page 4 Components names and functions • Main unit ① ⑧ ② ⑤ PW R ⑨ ⑥ ③ pH/m V ⑦ ④ ⑪ SKI P ⑩ OPEN ① Display : Displays measurement readings or status of the unit. ② PWR key : Press this key to turn on the unit. To turn off the unit, press the key again. ③...
- Page 5 • LCD ⑭ Display of pH or mV : Displays pH values or mV values in the measurement mode. Display the calibration values in the calibration mode. ⑮ Display of temperature : Displays temperature values in all modes. ⑯ Temperature unit : Indicates the unit (°C) of temperature measured.
- Page 6 Before Starting Measurement 1. Installing and replacing battery Install or replace battery when firstly use of the unit or [BAT] mark is lit. (1) Install the battery before connecting the probe to the unit. Remove the probe from the unit before when replacing battery, (2) Remove the screw holding the battery cover by turning it counterclockwise with a Phillips screwdriver.
- Page 7 Note: Auto power-off is no longer cancelled once the unit is turned off. Perform the auto power-off canceling each time as necessary. 5. Temperature compensation function The SK-620PHII is equipped with two types of temperature compensation. • Automatic temperature compensation (ATC) The sample temperature is measured by the temperature sensor included in the pH sensor, and is automatically compensated.
- Page 8 * The pH standard solutions which come with SK-620PHII are used as a reference. For accurate calibration, separately prepare the standard solutions. * Optional probes other than 640S-2 probe can use the pH standard solution bottle which comes with SK-620PHII as a substitute for a beaker at calibration.
- Page 9 (7) When the voltage reading becomes stable, set the calibration value to "4.01" (↓) key. by pressing the pH/mV (↑) or The calibration value is different from the temperature of solution. The right display is when the pH value of the standard solution at 25°C is "4.01".
- Page 10 The table below shows the pH value range to be entered for calibration. Calibration point pH value range pH 4 3.50 to 4.50 pH 7 6.50 to 7.50 pH 10 9.50 to 10.50 Note that it is not possible to perform calibration using the oxalate standard solution (pH 1.68 at 25°C) or borate standard solution (pH 9.18 at 25°C) (8) Press the REC key and [SA] is displayed on the LCD to indicate that the calibration data has been stored in the unit memory.
- Page 11 Backlight function SK-620PHII is provided with a backlight function. Pressing the key lights the LCD in green. This permits the pH readings on the LCD to be read easily even in a dark place.
- Page 12 Use the RS-232C communication cable dedicated to this product. The cable is available as an option. (1) Insert the plug of the optional RS-232C cable all the way into the RS-232C jack on the SK-620PHII. (2) Next, connect the other side of the cable to the serial port on the computer.
- Page 13 About the glass electrode (1) Storage If the glass electrode becomes dry, it cannot measure the pH accurately. The pH electrode works best and shows accurate readings when used with moderate moisture. When using the unit for the first time after purchasing or a long storage period, we recommend placing the glass electrode in water (distilled, pure or tap water) or the pH standard solution (pH4) for at least 12 hours and performing calibration before measuring.
- Page 14 Problem Possible cause Action Error code The pH value set in the calibration Set the same value for the calibration value and mode and the standard solution pH the pH standard solution value (--> Calibration value are not same. mode) or wash the glass electrode. (-->About the glass electrode) Time and voltage The glass electrode of the sensor...
- Page 15 Specifications Cat. No. 6436-00 Handy type pH meter (without probe) Model SK-620PHⅡ Measuring factors Hydrogen ion concentration (pH), Liquid temperature (Temperature) Temperature Measuring Range 0.00 to 14.00pH 0 to 50°C (connecting with PHP-31 probe) ±(0.3+1 digit) pH (at 0 to 2pH) ±0.5°C (at 20 to 30°C) Accuracy ±(0.1+1 digit) pH (at 2 to 12pH)
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