YANTAI STARK INSTRUMENT CO., LTD.

Computer-based: It adopts high-performance CPU chip, high-precision AD conversion technology and SMT to

complete multi-parameter measurement, temperature compensation and automatic range switching, with high

precision and good repeatability.

Reliability: Touch button, no switch knob or potentiometer

Alarm: Alarm signal isolation output; the alarm upper and lower limits can be arbitrarily set and the alarm is

undone in hysteresis.

Isolated current output: The current is corresponding to the output upper and lower limits of the dissolved oxygen

values, which can be arbitrarily set.

1. Measuring range:0~100.0 ug/L; 0~20.00 mg/L (automatic switching); 0~130℃

Resolution: 0.1 ug / L; 0.01 mg / L; 0.01℃

2. Intrinsic error of the whole instrument: ug/L: ± 1.0%F.S.; mg/L: ±0.5%F.S., temperature: ±0.5℃

3. Repeatability of the indication of the whole instrument: ±0.5%F.S.

4. Stability of the indication of the whole instrument: ±1.0%F.S.

5. Automatic temperature compensation range: 0～100℃, with 25℃ as the reference temperature.

6. Response time: <60s (98% and 25℃ of the final value)

7. Output current error:  ≤±1.0%F.S.

8. Isolated output: 4~20 mA(load resistance <750Ω)

9. Communication interface: RS485 or RS232(optional)

10. Data storage time: 10 years

11. Alarm relay: AC 220V, 3A

12. Power supply: 220V±10%, 50 ±1 Hz, DC24V (optional)

13. Overall dimension: 96 (length)x96(width)×110(depth)mm

   Dimension of the hole: 92x92 mm

14. Weight: 0.8kg(secondary meter)

15. Working conditions: ambient temperature: 0-60℃;  relative humidity <85％

16. The connection tubes for inlet and outlet water: Pipes and hoses should be of the following three sizes:

Φ8, Φ10 and Φl2.