Two wire 4-20mA oxygen content detection probe

Two wire 4-20mA oxygen content detection probeThe oxygen gas concentration detection transmitter adopts a cast aluminum explosion-proof shell as the protective shell, and has the characteristics of small size, light weight, and easy installation. The electrochemical oxygen sensor is used as the oxygen concentration detection element to convert the oxygen concentration content into an electrical signal. The weak electrical signal is amplified by the amplifier and sent to the microprocessor for signal processing, and then converted into a standard (4~20) mA current signal, which is transmitted to the required upper computer equipment. The connection between the transmitter and the upper equipment only requires a two core cable, and the connection does not distinguish between positive and negative polarity. It superimposes the signal with the power supply, which can both supply power to the equipment and transmit signals, greatly solving the difficulty of on-site construction wiring and making equipment debugging, installation, and maintenance faster and more convenient. In addition, this transmitter has strong electromagnetic interference resistance, precise measurement, rapid response, long service life, stability and reliability, making it very suitable for places such as petrochemicals, metallurgy, and environmental monitoring that require monitoring of oxygen concentration.

Two wire 4-20mA oxygen content detection probeProduct Features:

1> Adopting cast aluminum explosion-proof shell.

2> Compact in size, lightweight, and easy to install.

3> Built in 4-series electrochemical sensor.

4> Equipped with one click zero adjustment and one click calibration functions.

5> Output standard (4-20) mA current signal.

6> Two electrodes are connected without polarity, and the connection does not distinguish between positive and negative poles.

7> The maximum transmission distance of the standard (4-20) mA current signal is up to 1000 meters.

8> Can be equipped with various devices such as PLC, DCS system, GDS system, gas alarm controller, etc.

9> Accurate measurement, rapid response, long lifespan, stable and reliable.

10> Strong anti electromagnetic interference performance, more suitable for complex industrial environments.

Technical Specifications:

1> Gas detection: oxygen;

2> Detection method: natural diffusion;

3> Measurement range: (0~25)%, (0~30)%;

4> Response time: ≤ 60 seconds (T90);

5> Indication error: ± 3% FS;

6> Sensor type: electrochemical;

7> Execution standard: JJG365-2008;

8> Working mode: fixed long-term working mode;

9> Working voltage: 24V DC;

10> Working current:<25ma;<>

11> Output signal: (4~20) mA standard current signal;

12> Material structure: Die cast aluminum explosion-proof shell;

13> Dimensions: (165 * 135 * 75) mm;

14> Connecting cable: Two core shielded cable, recommended cross-sectional area (2 * 0.75) mm;

15> Connection distance: ≤ 1000m;

16> Protection level: IP65;

17> Installation method: wall mounted;

18> Explosion proof form: Explosion proof type;

19> Inlet: Hexagonal compression nut;

20> Interface specification: 20X1.5mm.