1、 Product Overview

The JH-DWS-51 microcomputer based sodium ion concentration meter is designed to measure the sodium ion content in aqueous solutions, and is particularly suitable for quality monitoring of high-purity water (such as steam, condensate, boiler feedwater, etc.) in power plants. It can also be used in higher education institutions, research structures, petrochemicals, microelectronics and other departments to determine the sodium ion concentration (or activity) in natural water, industrial wastewater and other water.

2、 Performance characteristics

1. Adopting microcontroller technology, the operation is simple and convenient, and the digital display is intuitive and correct.

2. The instrument has manual temperature compensation and automatic temperature compensation functions (when connected to the temperature power *, the instrument enters automatic temperature compensation and displays the current temperature; when not connected to the temperature power *, the instrument enters manual temperature compensation and displays the manual temperature setting value). Temperature electricity * is an optional accessory, and if the user needs it, they need to specify it when placing an order.

3. In addition to displaying pNa values, the instrument also has the function of displaying sodium ion concentration values [Na+].

4. The instrument has a beautiful and lightweight appearance.

3、 Technical parameters

1. Measurement range: pNa value: （0.00～9.00）pNa； Na+concentration value: 0.23 μ g/L~23g/L mV value: （-1800～1800）mV。

2. Resolution: 0.01 pNa.

3. Basic error of electronic unit: ± 0.02pNa ± 1 word.

4. Basic instrument error: ± 0.05pNa.

5. Calculation error for converting pNa value to [Na+] concentration value: ± 0.3% (reading).

6. Instrument repeatability error: not greater than ± 0.03pNa ± 1 word.

7. Temperature compensation range of the tested solution: (5.0-50.0) ℃

8. Electronic unit stability: ± 0.02pNa/3h.

9. Normal working conditions of the instrument:

10. Environmental temperature: (5-40) ℃;

11. Relative humidity: not exceeding 80%;

12. Power supply: AC 220V ± 22V; Frequency 50 ± 1HZ

13. There is no other magnetic field interference except for the Earth's magnetic field;

14. No significant vibration.