1.It adopts potassium dichromate digestion-redox titration method to measure COD in water.

2.It measures up to the standard of HJ/T 377 water quality online automatic monitor.

3.It can conduct automatic measurement, calibration, cleaning and digestion. Also, the user can set up measurement, cleaning, calibration, digestion time and temperature.

4.It adopts industrial computer control and work by computer operation.

5.It has leakage warning system, overheating temperature warning and reagent shortage warning function.

6.It can realize self-diagnosis of function failure, self-protection and telecommunication warning.

7.It can store up to 2000 sets of measuring data and has deletion and viewing function.

8.The signal of 4~20mA can be connected with RS-232 port.

9.It has long-distance communication function.

10.Industrial process control: The instrument is used for water quality monitoring in many fields including environmental protection, petrochemistry, chemical industry, electricity generation, Pharmaceuticals, food security, electronics and tap water supply.

1.Measuring range: 0～100mg/L；0～1000mg/L；0～5000mg/L

2.Repeatability or accuracy: ±5％or ±5mg/L( within 100mg/L)

3.Zero drift: ±5mg/L

4.Span drift: ±10％

5.potassium hydrogen phthalate test: the error range is ±10％or ±6mg/L(within 100mg/L)

6.The continuous time of failure-free operation>=720h.

7.Normal working conditions of instrument

a)Ambient temperature: (0～40)℃

b)Relative humidity<=90%

c)Power supply: AC voltage (220±22)V, frequency(50±0.5)Hz

d)No corrosive gas in the surrounding atmosphere

e)There is no function-affected oscillation in surrounding environment

f)There is no other disturbance of electromagnetic field other than geomagnetic field.

8.Dimension (length x width x height ): 600mm×455mm×720mm