TD149-1 benchtop PH acidity meter

TD149-1 bench pH meter is an instrument used to determine the pH value of solution. The pH pH meter works on the principle of a galvanic cell. The electromotive force between the two electrodes of a galvanic cell is based on Nernst's law, which is related not only to the properties of the electrodes but also to the concentration of hydrogen ions in the solution. There is a correspondence between the electromotive force of the galvanic cell and the chloride ion concentration, and the negative logarithm of the hydrogen ion concentration is the pH value. Laboratory pH pH meter is an intelligent laboratory routine analysis measuring device, it is suitable for medicine, environmental protection, universities and scientific research units of the laboratory to measure the pH value in aqueous solution, can also be used to measure the electrode potential of various ion-selective electrode and solution temperature.

1. The main features of the instrument

The instrument adopts single-chip microcomputer technology and has the function of power failure protection. Chinese menu display, the operation is simple and clear.

The instrument has automatic temperature compensation, automatic calibration, automatic calculation of electrode slope and other functions. The instrument can store, delete and consult the measurement results. The instrument can store up to 500 sets of measured experimental data.

In the temperature range of (0.0 ~ 60.0) ℃, the user can choose five pH buffer solutions for one -, two - or three-point calibration of the instrument. By adjusting the equipotential point, users can measure the DH value of pure water, ultra-pure water and boiler water.

Instrument with USB interface, communication with the computer, the computer can store the measurement data of the instrument.

2. Normal operating conditions of the instrument

Ambient temperature: (5 ~ 35) ℃

Relative humidity: no more than 75%;

Power supply: DC general power supply (9VDC, 800mA);

There is no corrosive gas in the air of Zhou;

There is no vibration in the enclosure which affects the performance.

Besides ground contact, there is no other electrical interference affecting the performance.

3, the main technical performance of the instrument

1. Instrument level 0.001

2, measuring range pH: (0.000 ~ 14.000) pH

3, display range (-2.000 ~ 20.000) pHmV: (-1999.9 ~ 1999.9) mV

4. Temperature: (-5.0 ~ 110.0) ℃

5, resolution pH: 0.001pH

6, mV: 0.1mV temperature: 0.1℃

7, electronic unit value error pH: + 0.002pH + 1 word

8, mV:±0.03%FS

9, temperature: ±0.2℃

10, automatic temperature compensation range: (-5.0 ~ 110.0) ℃

11, calibration method: one, two or three point automatic calibration

12. Five standard buffer solution for calibration instrument (25.0℃) :

13. Overall dimension (m) : 280x215x92 (length x width x height)

14, weight (kg) : about 1kg