High Precision Trace Oxygen Analyzer GPR-1900

Principle: Electrochemical sensor.

Range: 0~10/100/1000 ppm, 1/25% O₂ automatic or manual switching.

Resolution: 0.1% of the range.

Accuracy: 1% of the range (at normal temperature and pressure).

Linearity: R-squared value >0.995.

Calibration gas: Recommended to use 80% FS O₂ in N₂ standard gas.

Response time: 20 seconds to reach 90%.

Recovery time: 15 minutes from air (30 seconds) to 10 ppm.

10 minutes from 9 ppm (2 minutes) to 10 ppb.

Sensor expected lifespan: 24 months (at 1000 ppm).

Operating Conditions

Application fields: Semiconductor, air separation, specialty gas industry.

Measurement media: H₂, He, CO2 hydrocarbons, inert gases, mixed gases, etc.

Interface: Inlet and outlet use 1/4” or 1/8” ferrule fittings.

Pressure: 5~30 psig (maximum 100 psig).

Temperature: 5~ +45°C.

Flow rate: 1~3 SCFH, recommended: 2 SCFH (cubic feet per hour).

Electrical Characteristics

Certification: ISO9001, CE certification.

Display: LCD display.

Intelligence: Automatic range switching function, automatic data storage function and graphical display, remote control via USB.

Control keys: Waterproof keys for easy selection of range, calibration, alarm, and system settings.

Alarm: Two relay alarm outputs, power failure alarm output, sensor failure alarm output.

Compensation: Automatic pressure and temperature compensation function.

Output: 0~1V or isolated 4~20mA analog output.

Power supply: 220V AC@50Hz.

Physical Characteristics

Enclosure: Aluminum oxide material, panel mount.