ST-L902 four parameter water quality analyzer, capable of simultaneously measuring: conductivity (electrode type) PH、 Four of the five parameters, including temperature, residual chlorine (imported electrode), and turbidity, are optional. Each channel is independent of each other, without switching switches, and does not interfere with each other.

1、 Conductivity:

1) Measurement range: 0.1-300 μ S/cm; (0.1 electrode); 1.0～3000μS/cm; (1.0 electrode); 10～30000μS/cm; (10.0 electrode).

2) Measurement temperature: 0-99.9 ℃.

3) Accuracy: ± 0.5% FS, ± 0.5 ℃.

II pH：

1) Measurement range: (0.00~14.00) pH.

2) Basic error of electronic unit: ± 0.02pH.

3) The basic error of the instrument is ± 0.05pH and ± 0.5 ℃.

3、 Temperature:

1) Measurement range: (0.0~100.0) ℃.

2) Basic instrument error: ± 0.5 ℃ (0.0 ℃≤ T ≤ 60.0 ℃); Other range: ± 1.0 ℃.

4、 Residual chlorine:

1) Range: (0-2.50, 0-5.00, 0-10.00, 0-20.00) mg/L;

2) Resolution: 0.01mg/L;

3) Repeatability: ± 2%.

5、 Turbidity:

1) Range: (0-20.00) NTU, (0-50.00) NTU, (0-100.0) NTU, (0-200.0) NTU; （0～4000.0）NTU；

2) Resolution: (0.001NTU), (0.001NTU), (0.01NTU), (0.1NTU); （1NTU）。

3) Repeatability: ± 10%.

6、 Each channel is independent of each other, and the data of each channel is measured simultaneously.

7、 Conductivity pH、 Temperature, residual chlorine, and turbidity are displayed on the same screen.

8、 Current isolation output: Each parameter is independently 4-20 mA (load<750 Ω).

9、 The power supply of the four parameter water quality analyzer for drinking water is AC220V ± 22V, 50Hz ± 1Hz, and DC24V ± 2.4V can be optionally selected.

10、 RS485 communication interface (optional).

11、 Protection level: IP65.

12、 The working conditions of the four parameter water quality analyzer for drinking water are: ambient temperature of 0-60 ℃, relative humidity ≤ 90%.

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