Constant oxygen gas analyzer

Model: SY-HG3300-CJ

Typical application:

> Combustion device, boiler combustion efficiency control

> Measurement of oxygen concentration in cement rotary kiln process

> Measurement of oxygen concentration during the process of steel, iron and nonferrous metals smelting

> Measurement of oxygen concentration during coal gas recovery

> Measurement & control of oxygen concentration in hyperbaric oxygen chambers, infant incubators, ventilators, and anesthesia machines

> Measurement of oxygen concentration during the process of animal and plant culturing, vegetables & food processing

> Measurement of oxygen concentration in warships, underground command centers, tunnels, deep wells, civil defense projects, urban tunnels

> It is integrated in gas analyzer system, then sale the complete system


Ion flow oxygen technology:

Oxygen molecules in the measured environment diffuse through the diffusion holes to the negative electrode and flow from the negative electrode through the electrolyte oxygen pump to the positive electrode under the action of the electric field, and then return from the positive electrode to the measured environment. The current flowing through the loop has a corresponding ion current value under different oxygen concentration, there is a function relationship between the ion current value and the oxygen concentration in the measured gas. High resolution, good stability, small drift, low power consumption.

Technical data

Measured range

0 ~ 10 %, 0 ~ 50%  O2


≤1%FS /7d (Long run can be less than 0.5%FS)




1% FS

Power supply

AC220V ± 10%, 50 / 60Hz

Power consumption

≤ 60W

Display screen

5" 640*480 pixel color TFT touch screen

Analog output

0/4 – 20mA  ( RL ≤ 500 Ohm )


RS485 ( optional )

Alarm output

2 normally open relays ( passive output),

Contact rate: 5A/30VDC;  10A/250VAC


 Ambient condition

Ambient temperature

5 ~ 40℃

Ambient humidity

≤ 90% RH

Airflow velocity


Placing request

horizontal placement

Mechanical vibration

No strong vibration

Electromagnetic interference

No strong Electromagnetic interference


Gas-sample condition

Gas-sample temperature

5 ~ 40℃

Gas-sample pressure

2 ~ 50 Kpa

Gas-sample flow rate

30 ~ 60 L/h

Gas-sample moisture content

Before entering the instrument, the gas-sample should be dried. After drying, the dew point temperature should be less than 5°C .

Gas-sample dust content

Before entering the instrument, the gas-sample must be filtered out of dust.


Instrument size and weight

Instrument size

488 * 177 * 432 mm

Dimension for mounting

436 * 180 mm

Instrument weight

15 kg