TECHNICAL INDEX

1、 Display mode: Chinese LCD display, Chinese menu style operation

2、 Measurement range:

1) Ionic concentration value: 0-5000 mg/L, with division values of 0.1ug/L and 0.01mg/L; 0.00PX to 9.00PX, resolution: 0.01PX； 0-99.9 ℃, resolution: 0.1 ℃；

2) Potential value: - 1999~+1999mV, with a division value of 0.1mV;

3、 Randomly provide multiple commonly used ion modes such as H+, Ag+, Na+, K+, NH4+, Cl -, F -, NO3-, BF4-, CN -, Cu2+, Pb2+, Ca2+, etc., and support user-defined ion modes.

4、 Basic error: ± 2.5% of reading, temperature: ± 0.3 ℃ (0-60.0 ℃);

5、 Automatic temperature compensation range: 0-99.9 ℃, with 25 ℃ as the reference;

6、 Temperature compensation error: ±3%；

7、 Repetitive error: ± 2.5% of the reading;

8、 Stability: ± 2.5%/24h of reading;

9、 Input impedance:> ten¹²Ω

10、 Input current: ≤ 2x10-12A；

11、 Tested water sample: 0-60 ℃;

12、 Clock accuracy: ± 1 minute/month;

13、 Data storage quantity: 3000 points;

14、 Continuous data retention time in case of power failure:>5 years;

15、 Power supply: 220V ± 10% 50 ± 1 Hz;

16、 Weight: 1.0kg；

17、 Dimensions: 202 (length) * 202 (width) * 68 (height) mm;

18、 Working conditions: Environmental temperature: 0-60 ℃ Relative humidity:< 85%.

main features

Chinese LCD display, Chinese menu style, Chinese note taking. Microcomputerization: Using high-performance CPU chips, high-precision AD conversion technology, and SMT surface mount technology, it completes the measurement of ion concentration and temperature, temperature compensation, instrument self-test, high accuracy, and good repeatability. High reliability: Single board structure, touch sensitive buttons, no switch knob. Input impedance>10¹²Ω. It has a long stable time and a very stable reading. Waterproof and anti-corrosion design. Electrode diagnosis: Multiple calibration methods, E0 and S queries, monitoring electrode performance. Network function: RS232 bidirectional communication, compatible with printer or TLab1.0 communication and data processing software. Historical data: Store 3000 pieces of data. Notepad function: Record 200 pieces of information. Built in real-time clock: provides time benchmarks for various functions, etc. Industrial control watchdog: ensures that the instrument does not crash.