Overview
QIWEI PHS-25B pH meter is a Benchtop microcomputer rechargeable acidity meter with a Measurement accuracy of 0.05pH. The instrument adopts imported high-quality integrated components and is controlled by a microprocessor. The performance is stable and the measurement is accurate and reliable. It is mainly used for laboratory detection of pH value and mV value of solution, with touch button and manual temperature compensation function.
Features
1. Measurement accuracy is high, reaching 0.05pH.
2. Adopt imported high-quality integrated components, stable and reliable performance.
3. Controlled by microprocessor, accurate measurement.
4. Equipped with touch buttons for easy operation.
5. With manual temperature compensation function.
6. Can measure ph value and mV value.
Principle
The PHS-25B pH meter is a high-input Impedance DC amplifier whose Impedance conversion is realized by a high-input Impedance integrated circuit. Since the pH value of the solution is temperature-dependent, and the mV-pH conversion slope of the Glass electrode is usually lower than the theoretical value and decreases with time, and there is discreteness between Electrodes, the pH meter is automatically controlled and adjusted by the microprocessor to realize the functions of temperature compensation, Electrode slope compensation, pH positioning and correction.
Applications
Environmental protection, food, chemical, scientific research departments
Steps
1. Connect the Power Adapter or use the built-in battery for power supply.
2. Install and connect E201-C plastic case PH composite Electrode.
3. Use the pH standard calibrated specimen for instrument calibrating.
4. Immerse Electrode in the solution to be tested.
5. Set the manual temperature compensation value by touching the button.
6. Read and record the ph value or mV value measurement results on the display screen.
Notice
• Please use the standard E201-C Plastic Case PH Composite Electrode, which is suitable for measurement in the solution Temperature range of 5-60 ° C.
• The allowable environment Operating temperature of the instrument is 0~ 40 ° C, and the relative humidity should be less than 85%.
• Solution temperature compensation range is 5~ 60 ℃.
• Note that the Stability (zero drift) index of the instrument is ≤ 0.01 pH +/- 1 word/2h.
• Do not use the instrument under conditions that exceed the specifications.
