S7140DO On-line Dissolved Oxygen Meter Aquarium do online digital dissolved oxygen meter analyzer

S7140DO   On-line Dissolved Oxygen Meter

Applications：

Industrial on-line microprocessor-based dissolved

oxygen meter is a water quality on-line monitoring

and control instrument. The instrument is equipped

with polarographic dissolved oxygen electrode, which

is widely used in power plants, petrochemical industry,

metallurgical electronics, mining industry, paper

industry, biological fermentation, medicine, food and

beverage,water treatment, aquaculture and other

industries.It continuously monitor and control the

dissolved oxygen value and temperature value of

water solutions.

Feature：

●LCD display

●Intelligent menu operation

●Various automatic calibration functions

●Manual or automatic temperature compensation

●Two sets of relay control switches

●High alarm & low alarm,hysteresis control

●4-20mA&RS485Multiple output modes

●Dissolved oxygen, temp, etc.simultaneouslyshowed on the same screen

●Password protection function to prevent misoperationby non-staff.

Technical parameters:

Measurement range:DO:L～20.0mg/L；

Temp:-10～150.0℃；

Resolution:DO；0.01mg/L；

Temp:：0.1℃；

Basic error: DO：±1%F.S；

Temp: ±0.3℃；

Electrode residual signal：＜1‰；

Response time（final value 90%）：

25℃＜60S；35℃＜30S；

Tability： At constant pressure，

Weekly drift＜2%F.S；

Two current outputs：0/4 ~ 20 mA (load resistance<750 Ω);；20～4mA(load resistance＜750Ω)；

Communication output: RS485 MODBUS RTU；

Two groups of relay control contacts：3A 250VAC，3A 30VDC；

Power supply (optional)：85～265VAC±10%,50±1Hz，

Power ≤3W；9～36VDC，

Power ：≤3W；

Overall dimension：98×98×130MM；

Installation mode: panel, wall hanging,

Panel opening size：93×93MM；

Waterproof grade： IP65；

Instrument weight：0.6KG；

Instrument working environment：

Environment temperature ：-10～60℃；

Relative humidity：≦90%；

In addition to the earth's magnetic field aroundno strong magnetic interference