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12720-DIGITAL PH METERS

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12720-DIGITAL PH METERS

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Features:

  • Measures pH & mV
  • Highly Stable and Accurate
  • Auto Temperature Compensation Facility
  • 3 ½ digit LED Display
  • Auto Polarity & Decimal Indication
  • Battery & Mains Operated Available
  • Slope Control
  • Rugged and Reliable design
  • Highly Stable and Accurate
  • ATC Facility (101)
  • Slope Control

Specifications:

DISPLAY 3 ½ Digit LED
RANGE pH
mV

                        

0 to 14.00

0 to ± 1999

RESOLUTION pH
mV
0.01

1

ACCURACY pH
mV
± 0.01 pH

± 1 digit

TEMPERATURE

COMPENSATION

Auto: 0 to 100o C

Manual : 0 to 100o

INPUT IMPEDANCE > 1012 ohms
WEIGHT 2.5 kg
SLOPE CONTROL 80 to 120%
RECORDER OUTPUT 0 to 10 mV/pH

0to 10 mV/ 100mV

Adjustable

POWER 230V ± 10% AC, 50 Hz
DIMENSIONS 76 X 275 X 175mm
SENSOR Combined pH Electrode
ACCESSORIES *Combined pH Electrode *Buffer Tablets 4 pH & 7 pH *Operation Manual *Buffer Bottles (4 & 7pH) *Temp. Prode *Electrode Stand
OTHER pH METERS Microprocessor pH Meter, Digital Potentiometer, Digital pH Meter (LCD Based)
Part No. Description
12720 Digital Ph Meter

Here’s a brief overview of how digital pH meters work:

  1. Electrode System:
    • A digital pH meter typically consists of a probe or electrode system. The electrode contains a special glass membrane that is sensitive to hydrogen ions (H+). There is also a reference electrode that maintains a stable potential.
  2. Ion-Selective Electrode (ISE):
    • The glass membrane of the pH electrode is an ion-selective electrode, specifically selective to H+ ions. When immersed in a solution, the glass membrane allows H+ ions to pass through, generating a potential difference.
  3. Reference Electrode:
    • The reference electrode provides a stable reference potential against which the potential generated by the ion-selective electrode is measured.
  4. Potential Difference Measurement:
    • The potential difference between the ion-selective electrode and the reference electrode is proportional to the concentration of H+ ions in the solution. This potential difference is converted into a pH value by the pH meter.
  5. Calibration:
    • Digital pH meters need to be calibrated regularly to ensure accurate measurements. Calibration involves adjusting the meter based on known standard solutions with defined pH values. This establishes a reference point for the meter to accurately measure pH in unknown solutions.
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