Kedida CT-6821 User Manual Download Page 2

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http://www.kedida.com.cn/ 

FEATURES

 

* 0.0 to 14.0 pH/0 to ± 500mV

* LCD display with pH and temp. OR ORP and temp.

* Pen type digital pH& ORP meter, all in one,
Electrode is included, easy for general purpose 
application 

* Data hold function for freezing the desired value

* Water proof and protection

* Auto power off in 5 minutes

* pH 4.01, pH 6.86 and pH 9.18 standard solution are
standard accessories 

* Compact size, light weight.

* Easy to change the pH electrode

* Power supply by DC 1.5 V battery (LR44, BAT ) x 4 pcs

* Build in temperature sensor, ATC (auto temperature
compensation) 

*

  Interchangeable 

* Three point calibration for pH 4.0, pH 6.8 and pH 9.1

* Already calibrated, can be used directly

SPECIFICATIONS 

Display 

LCD, size : 20 mm x 27 mm. Consumption 

Measurement    Range 

pH

 

0.0 to 14.0 pH

 

ORP

 

  ± 500mV 

Resolution

 

pH

 

0.1 pH

 

ORP

 

  ± 2mV 

Accuracy

 

pH

 

±  0.1 pH   

* After calibration

 

ORP 

  ± 5mV 

pH Calibration 

pH4.0,pH6.8, pH9.1, 

  Three Point Calibration 

ORP 
Calibration 

It 

already be calibrated before 

leaving the factory ; Using it 
directly,please.

 

Temp. Display

 

0.1

/1

 

Temp. Accuracy 

2

/5

 

Working Temp. Range 

0 ~ 50

(32 ~ 122

ATC 

0 ~ 50

(32 ~ 122

Dimension

 

188 x38 mm 

*

Meter with the electrode

Weight

 

90 g (included electrode)

 

OPERATING INSTRUCTION 

Pull out the cap before using, Do not Screw it! 

*Power ON/OFF Feature

1. Press ON/OFF key to turn the Meter on and off.

2. The Meter will shut off automatically if there is no operation in 5 minutes.

Summary of Contents for CT-6821

Page 1: ... off the protection cap Any damage may cause the invalid of the electrode The duration period of the glass electrode is one year from the date of purchase whether you use it or not please change the electrode in time The electrode can not be used under the dry condition always soak the electrode into the distilled water or purified water for 5 30 minutes to activate before use Figure Part Name 1 B...

Page 2: ... sensor ATC auto temperature compensation Interchangeable Three point calibration for pH 4 0 pH 6 8 and pH 9 1 Already calibrated can be used directly SPECIFICATIONS Display LCD size 20 mm x 27 mm Consumption Measurement Range pH 0 0 to 14 0 pH ORP 500mV Resolution pH 0 1 pH ORP 2mV Accuracy pH 0 1 pH After calibration ORP 5mV pH Calibration pH4 0 pH6 8 pH9 1 Three Point Calibration ORP Calibratio...

Page 3: ...screen 2 Press HOLD key to select ORP on the screen 3 Then press CAL to confirm and the meter is ready to test in ORP mode Backlight Mode 1 Press the ON OFF key for 3 seconds until the pH display on the screen 2 Press HOLD key to select LED on the screen 3 Then press CAL to confirm the backlight mode 4 Power off the meter to close the backlight mode Hold Feature Press HOLD to freeze the current re...

Page 4: ...The pH value will be updated until a stable reading is reached The data maybe not accurate if the electrode is not be activated 4 press CAL key for 3 seconds until the text CAL appear on the display and release the key 5 Text SA will showing in the LCD denote that the current calibration result is saved 6 The text END will be displayed at the end The meter is ready for pH measurement Overrage Remi...

Page 5: ...fer solution Especially pay attention to the Electrode fixed collar if it is loosen when calibration it may cause the buffer solution enter the inside of the meter How to make pH buffer solution There are 3 pH buffer powder supplied with the meter when you buy them each powder should be Fully dissolved in water 250ml DO NOT use the metal containers Take the formulation of pH 6 8 buffer solution fo...

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