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15 

 

(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. The unit outputs the measurement data in the measurement 

mode. 

 
         

● Communication conditions 

              Communication standard of computer 

 

Communication speed  : 9600bps 

 

Data bit 

: 8 

 

Stop bit 

: 1 

 

Parity check 

: non 

 
         

● Example of the communication protocol 

    Ex.     pH 

 

: pH12.00 

 

    mV 

 

: -129.9mV 

 

    Temperature  : 25.0°C

 

 

   

Time 

 

: at 12:30:30 on January 1, 2015   

Communication protocol 
$pH:mV:TpHE1 

 

P12:00 : m-129.9mV : T25.0C  @2015-1-1 12:30:30  dc  cr  If 

                     

 

             
 
 
 

Analog output

 

The unit outputs the electromotive force of the pH sensor in real time while in the measurement mode. 
By connecting the unit to your device, the appropriate analysis will be performed. 

 
Note: The unit does not output the electromotive force while it is calibrating, displaying recorded data or in 
            the setting mode. 

 
 

● Connecting the cable 

      A 2.5-mm monaural plug is necessary for connection. Prepare the following items. 
               
 

Dimensions: 2.5 (Dia.) × 11 (L) mm 

       

              Wiring: See the figure on the right. 
                                                                               
 

(1)  While the unit is off, insert the plug into the ANALOG port on the back of the unit. 

(2)  Press the 

  key to turn on the unit. The sensor electromotive force is output in the measurement 

mode. 

 
 
 
 
 
 
 
 

       

 

pH value

 

   

 

Temp.

 

             

 

year, month, day time

 

 

 

checksum

 

       

 

mV value

 

Positive (+) side

 

Negative (−) side

 

Summary of Contents for 6427-00

Page 1: ...Instruction manual for 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 M11...

Page 2: ...range may result in unit malfunctions Avoid using this unit in a place exposed to direct sunlight or near a heat source Otherwise the case may become deformed or malfunction may be caused If this ins...

Page 3: ...value date and time are simultaneously displayed Calibration at one to three levels can be done Selectable calibration point at 25 C among 4 01 6 86 and 9 18 or 10 01 Data recording function The recor...

Page 4: ...5 Key used to hold the measured values Also used to retrieve the data recorded on the unit 6 Key used to switch to the calibration mode Also used to return to the measurement mode from the various se...

Page 5: ...ue is displayed 8 MIN Lights up when the minimum value is displayed 9 READY Lights up when the measured value is stable 10 HOLD Lights up when the measured value has been held 11 MEM Lights us when th...

Page 6: ...bottom of the protection bottle Note When installing or removing the glass electrode protection bottle pay attention not to spill the standard solution in the bottle If the standard solution comes in...

Page 7: ...sensor arm on the unit as shown in the figure below 3 Install the sensor on the arm as shown in the figure below Install the sensor arm by aligning its mounting position with the unit mounting positi...

Page 8: ...to the measurement mode and the temperature value that was just set appears 5 Calibration For more accurate measurement calibration of about once a day is recommended Prepare the following items for...

Page 9: ...e glass electrode into the selected pH standard solution until the liquid junction is submerged and wait until the pH reading becomes stable When the stability indication function is on the READY indi...

Page 10: ...other point press the key to select the calibration point and then follow the steps from 5 above 9 Upon completion of calibration press the key to end the calibration mode The unit returns to the meas...

Page 11: ...he HOLD function when the temperature of the sample being measured fluctuates a lot Operation procedure 1 Press the key in the measurement mode The HOLD indicator lights up to indicate that the measur...

Page 12: ...data To delete the recorded data refer to Deleting the recorded data Various settings The following settings and operations are available in the setting mode No Character Descriptions P1 0 Transmits t...

Page 13: ...the pH display mode or the mV display mode 2 Select P2 0 in the setting mode and then press the key As the default value the NO indicator starts flashing 3 Press either the or key to select YES or NO...

Page 14: ...the asymmetric potential difference The unit determines that the sensor is worn when the sensitivity is 75 or less 115 or more or the asymmetric potential difference is 60 mV or more Error code E13 3...

Page 15: ...ode 2 Press the key to cause the NO indicator to flash 3 Press the key to switch to YES and then press the key Upon resetting the unit returns to P9 0 Note To delete the recorded data refer to Deletin...

Page 16: ...m 129 9mV T25 0C 2015 1 1 12 30 30 dc cr If Analog output The unit outputs the electromotive force of the pH sensor in real time while in the measurement mode By connecting the unit to your device th...

Page 17: ...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 18: ...e is small Immerse the sensor probe up to liquid junction into the sample solution The sample being measured is pure water with a low electric conductivity Because of the characteristic of glass elect...

Page 19: ...peration ambient Temperature 5 to 40 C Humidity lower than 95 rh no condensing Storage ambient 10 to 50 C no condensing Materials Case sensor arm ABS resin Dimensions 215 W 58 H 170 D mm exclusive of...

Page 20: ......

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