What is temperature compensation of pH meter?
Automatic: Where a temperature sensor signals the meter what the solution temperature is, and the meter automatically corrects the pH readings for changes in the electrode sensitivity. … Temperature compensation eliminates most of the temperature-dependent measurement error from the electrode.
What is pH temperature compensation?
Solution temperature compensation (STC) converts measured pH to the pH at 25°C. pH values taken at the same temperature or converted using solution temperature compensation can be compared to each other. To achieve highest accuracy, calibrate and measure at the same temperature.
Why must temperature be compensated for when using a pH meter?
Unfortunately the accuracy of pH measurement is affected by the temperature of the measurement sample, which leads to an error in the measured pH value. To eliminate or reduce this effect, the temperature change must be compensated or avoided.
What is auto temperature compensation?
Automatic Temperature Compensation (ATC), which compensates for the varying milli-volt output from the electrode due to temperature changes of the process solution and Solution Temperature Compensation (STC), which corrects for a change in the chemistry (change in pH) of the solution as the temperature of the solution …
What is automatic temperature compensation refractometer?
Brix Refractometers with Automatic Temperature Compensation (0–90% Brix) from 89.00. High-quality aluminum refractometers that measure the sugar content in the Brix scale. These feature ATC, which enables accurate measurements without needing recalibration after shifting temperatures.
Why is pH dependent on temperature?
You can see that the pH of pure water decreases as the temperature increases. … If the pH falls as temperature increases, this does not mean that water becomes more acidic at higher temperatures. A solution is acidic if there is an excess of hydrogen ions over hydroxide ions (i.e., pH < pOH).
What does temperature compensation mean?
Temperature compensation refers to a measure for counteracting or correcting an undesired temperature influence. Ideally, temperature compensation will eliminate all effects of a change in temperature on the measured value delivered by a sensor.
Which of the following can be used to provide automatic temperature compensation?
6. Which of the following can be used to provide automatic temperature compensation? Explanation: To provide automatic temperature compensation, thermistors must be used. As the temperature of the solution changes, the circuit constants are altered accordingly.
How do I know if my pH meter is accurate?
The only reliable way to determine whether a pH meter is accurate or not is to test it in standard solutions. Just like the only way you can tell if a scale is accurate is to test the standard weights.