1、 Product Overview

The PHS series desktop digital pH meter is a high-precision instrument used for laboratory pH measurement, with dual functions of pH and mV. Adopting E201 composite electric *, it has fast reaction and good stability. This series of instruments is widely used in many disciplines and fields such as scientific research, teaching, agriculture, etc.

2、 Performance characteristics

The hydrogen ion activity in the aqueous solution is converted into electrical energy by a sensor (pH composite electric *), and the electrical energy is input to the instrument. After being operated by an operational amplifier and current detector, it is converted into digital display through A/D.

1. Positioning knob: Adjust the value of pH 6.86 standard buffer solution according to the corresponding temperature during calibration

2. Temperature knob: Set the temperature value of the solution to be tested

3. Slope knob: Adjust the value of pH 4.00 or pH 9.18 standard buffer solution according to the corresponding temperature during calibration

4. Electrical * socket: Connect pH composite electrical * (interface model: Q9）

5. PH/mV conversion switch: select to measure pH value or mV value

6. Power switch: Turn on or off the instrument power supply

7. Power socket: Connect a voltage regulator adapter or power cord

3、 Technical parameters