Resolution: 0.1ug/L; 0.01 mg/L; 0.1℃

2. Intrinsic error   of the whole instrument: ug/L: ±l.0％FS; mg/L: ±0.5％FS, temperature: ±0.5℃

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

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

5. Automatic temperature compensation range: 0～60℃, with 25℃   as the reference temperature.

6. Response time:   <60s (98% and 25℃   of the final value) 37℃:   98% of the final value < 20 s

7. Clock accuracy: ±1 minute/month

8. Output current   error: ≤±l.0％FS

9. Isolated output: 0-10mA (load resistance <15KΩ); 4-20mA   (load resistance <750Ω)

10. Communication   interface: RS485 or 232(optional)

11. Data storage capacity: l month (1 point/5 minutes)

12. Saving time of   data under a continuous power-failure condition: 10 years

13. Alarm relay: AC 220V, 3A

14. Power supply: AC220V±10％, 50±1HZ, 24V DC   (optional)

15. Overall dimension: secondary meter: 146 (length) x 146 (width)   x 108 (depth) mm;

dimension of the hole: 138 x 138mm

16. Weight: 0.8.kg  (   meter)

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

18. The connection tubes for inlet and outlet water: Pipes and   hoses should be of the following three sizes: Φ8,

Φ10   and Φl2.