1 SJG-781Heavy metal monitoring deviceTechnical parameters:

1. measuring range

Cadmium:0.1ppb～10ppm, multi range

Lead:0.1ppb～10ppm, multi range

Mercury:0.1ppb～10ppm, multi range

Arsenic:5ppb～8ppm, multi range

2. Measurement accuracy: ±10%(Measurement value)

3. Measurement time: ≤20minute

4. Zero drift: ±5mg/L

5. Range drift: ±10％

6. Mean time between failures and continuous operation: ≥720h/order

7.Normal working conditions of the instrument

a)Environmental temperature:0～40)℃；

b)Relative humidity: not greater than90%；

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

d)There are no corrosive gases present in the surrounding air;

e)There are vibrations around that do not affect performance;

f)There is no electromagnetic interference that affects performance other than the geomagnetic field around.

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

9.Weight: Approximately50kg

II SJG-781Product features of heavy metal monitoring device:

1.Measuring the content of heavy metals (lead, cadmium, arsenic, mercury, etc.) in water using the cation leaching method

2. Adopting industrial computer control, easy to operate, capable of data storage and analysis

3. Automatically enter the measurement start stateEquipped with leak alarm, heating temperature over limit protection and alarm, using buzzer

4. The function of setting, checking, and displaying time by oneself (year, month, day, hour, minute); A fail-safe mechanism

5. Remote communication alarm, display of fault content, automatic instrument protection

6. The digestion time and temperature can be set by oneself, with functions such as timed measurement, cleaning, calibration, etc

7. Data storage, deletion, and retrieval functions (2000 sets), remote communication function

8. Output signal isolation 4~20mA and coexistence of RS-232 interface