SATO SK-640PH Instruction Manual Download Page 17

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RS-232C communication
is not possible.

The communication conditions or
protocols are not correct.

Check the communication conditions or
protocols. (-->About the RS-232C output)

The serial port on the computer is
not open.

Check that the serial port is open by referring to
the computer's operation manual.

Summary of Contents for SK-640PH

Page 1: ...Instruction manual for No 6422 00 Handy type pH meter Model SK 640PH No 3 Nishi Fukudacho Kanda Chiyodaku Tokyo 101 0037 Japan URL http www sksato co jp english N 11...

Page 2: ...e If this unit is used in an environment where electrical noise is generated the display may become unstable or the measurement error may increase Never disassemble or modify the unit Doing so may cau...

Page 3: ...mperature compensation Features Large LCD for easy reading The pH value and the temperature are indicated on a large LCD Auto Power Off The auto power off function turns off the power automatically if...

Page 4: ...e and MIN value The maximum and minimum voltage mV can also be logged To return to the measurement mode press the REC key for three seconds or more while in the MAX MIN logging mode Pressing this key...

Page 5: ...minimum pH or voltage value is displayed BAT Lights up when battery power is insufficient ATC Lights up when the temperature sensor is connected Display of time voltage Indicates the time elapsed sin...

Page 6: ...g the vinyl cover disconnect the sensor probe first and then remove in the reverse order of installation Note The vinyl cover is not waterproof splash proof according to the Japanese Industrial Standa...

Page 7: ...on the right 2 Installing the glass electrode protection bottle 2 1 Install the protection bottle to the sensor probe in the reverse order of removal 2 2 Hold the sensor probe upright so as not to spi...

Page 8: ...fter replacing the battery c When very accurate measurement is necessary For more accurate measurement calibration of about once a day is recommended For calibrating the SK 620PH prepare the following...

Page 9: ...alibration value is 4 04 7 Press the REC key to store the calibration value in the unit memory SA is displayed on the LCD to indicate that the calibration data has been stored in the unit memory Now t...

Page 10: ...ssible to perform calibration using the oxalate standard solution pH 1 68 at 25 C or borate standard solution pH 9 18 at 25 C CAL key REC key REC Key REC Key Measurement mode Calibration pH4 Calibrati...

Page 11: ...hich is capable of measuring both pH and temperature is used connect both the BNC plug pH and the diode plug temperature 2 Press the PWR key to turn on the unit The whole LCD lights up for approximate...

Page 12: ...21...

Page 13: ...eft unwashed the liquid measured tends to form a film on the surface of the electrode causing measurement errors Always wash the pH electrode every time after use Washing can be done with water distil...

Page 14: ...bout the RS 232C output RS 232C output This instrument outputs data in real time on the pH voltage and temperature while in the measurement mode or the MAX MIN logging mode When the unit is connected...

Page 15: ...d replacing battery The power to the unit is turned off The auto power off is turned on Cancel the auto power off on the main unit Before measuring Error code pH display section The sensor probe is no...

Page 16: ...an electric conductivity of approx 100 S cm or more The temperature of the sample largely fluctuated Make the sample temperature stable The pH values change with temperature Readings are abnormal The...

Page 17: ...unication conditions or protocols are not correct Check the communication conditions or protocols About the RS 232C output The serial port on the computer is not open Check that the serial port is ope...

Page 18: ...ent Temperature 0 to 50 Humidity lower than 80 rh no condensing Battery Life About 20 hours continuous Materials Case ABS resin Electrode Glass Probe Epoxy resin Dimensions Main unit W 72 H 182 D 31 5...

Page 19: ...28 6400 40 PH40 Carrying case 6400 50 PH50 Electrode protection bottle...