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Summary of Contents for SATO KEIRYOKI SK-650PH
- Page 1 Instruction manual No. 6427-00 Desktop Type pH Meter Model SK-650PH No. 3 Nishi-Fukudacho, Kanda, Chiyodaku, Tokyo 101-0037 Japan URL: http://www.sksato.co.jp/english/...
- Page 2 For any other inquiries, contact the store where you purchased the instrument or our service network. Precautions in use For proper use of the SK-650PH, be sure to observe the followings: - This is a precision instrument. Be careful not to drop or knock it.
- Page 3 Overview The SK-650PH pH meter is a desktop type pH meter having a sensitivity display function that can check the deterioration state of sensor. Sensor arm that is convenient to use stirrer is equipped. Features Sensitivity display function Sensitivity display function can check the deterioration state of sensor. This is very useful to determine the timing of the maintenance and exchange of sensor.
- Page 4 Components names and functions 1. Main unit Rear view (1) Display: Displays measured values or the status of the unit. For details, refer to "LCD" : Key used to switch between the pH and mV displays. Also used to change the values in the various setting modes.
- Page 5 2. LCD (1) Display of pH or mV : Displays pH values or mV values. (2) Display of temperature : Displays temperature values or temperature setting values (3) ATC : Lights up when the temperature sensor is connected. (4) Display of clock : Year, month, date and time are displayed (5) Number of stored data : Indicates the numbers of stored data (6) REC...
- Page 6 * Do not connect the AC adaptor with wet hands or in a place exposed to water splashes. Doing so is dangerous, as it could cause electrical shock. * Be sure to use the dedicated AC adapter for the SK-650PH.
- Page 7 3. Setting up the sensor arm To use the sensor arm, follow the setup procedure described below. (1) Assemble the sensor arm as shown in the figure below. Insert until a "click" sound is heard. (2) Install the sensor arm on the unit as shown in the figure below. Sensor arm mounting positions on the unit (The sensor arm can be installed on either side.) Unit mounting position on the sensor arm...
- Page 8 About the calibration point The calibration point in the SK-650PH can be selected based on the usage of the unit. Conduct the calibration referring to the following information.
- Page 9 How to calibrate the SK-650PH Measurement mode (pH display mode) Press for 2 sec. Calibration mode pH 4 calibration Default display: pH4.00 pH 7 calibration Default display: pH7.00 pH 9 or pH 10 calibration Default display: pH9.50 changes the setting value...
- Page 10 (3) Make sure that the reading is stable (READY is lit), and then read the values. * About the stability indication function: With the SK-650PH, the READY indicator lights up to indicate that the reading has become stable. For details, refer to "Stability indication function".
- Page 11 * About the display of the electromotive force: With the SK-650PH, the pH and mV (electromotive force) display modes can be switched. Choose either mode as necessary. Press the key in the measurement mode to switch between the pH and mV display modes.
- Page 12 ● How to retrieve the recorded data (1) Press the key in the measurement mode to select either the pH display mode or the mV display mode. (2) Press and hold the key for at least two seconds. The REC indicator starts flashing to indicate that the unit is displaying the recorded data. Data No.
- Page 13 1. Transmitting the recorded data (P1.0) The data recorded on the unit can be transmitted to a computer. For details about setting the parameters or connecting to the RS-232C, refer to "Realtime communications" . (1) Press the key in the measurement mode to select either the pH display mode or the mV display mode.
- Page 14 * What is asymmetric potential difference? Inside the electrode, the inner solution of pH 7 is charged. The potential difference is theoretically "0" when the solution of pH 7 is measured. In reality, however, certain potential difference is produced due to the distortion of the sensor or the condition of the glass membrane.
- Page 15 In the realtime communications, the unit outputs data on pH, mV, temperature or time in any display mode. The temperature is output using the previously set unit (°C or °F). Note: The SK-650PH does not come with the communications or analysis software. It is recommended that you prepare your own software.
- Page 16 (1) While the unit is off, connect the RS-232C connection cable to the RS-232C port on the back of the unit. (2) Insert the 9-pin connector of the RS-232C connection cable into the serial port (9 pin) on the computer. (3) Press the key to turn on the unit.
- Page 17 About the glass electrode (1) Storage If left unused for a long time, the glass electrode becomes too dry to measure the pH accurately. The pH electrode works best and shows accurate readings when used with moderate moisture. When using the instrument 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 for at least 12 hours and performing calibration before measuring.
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Page 18: Troubleshooting
Error Messages If an error occurs, one of error codes listed below will be displayed on the LCD. Error Description Action Item codes The measured value is exceeded Use the unit within the measuring range. Otherwise, display range sensor may be damaged . - Page 19 Specifications Product Desk-top type pH meter Cat. No. 6427-00 Model SK-650PH Voltage Temperature Display Range 0.00 to 14.00pH -2002 to +2002mV -6.0 to 82.0°C (Main unit) Repeatability ±(0.01 + 1 digit) pH ----- ±(0.01+1 digit)°C (Main unit) (*) 0.1mV (±199.9mV) Resolution 0.01pH...
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