Portable Oxygen (O2) Gas Detector with Pump Sampling and Data Logging Key benefits Continuous, reliable monitoring of oxygen concentration in confined spaces and work areas to support operational decision making. Builtin pump with adjustable flow and longlife rechargeable lithium polymer battery for portable, onsite sampling without external power. Large data storage and clear LCD readout enable record keeping, trend review, and quick interpretation of measurements. Rugged housing and upscale aluminum carrying case protect the instrument during transport and field use. Core functions and standout features Gas detected: O2 (oxygen). Detection principle: electrochemical sensor for precision oxygen measurement. Sampling: pumpsuction sampling with flow up to 1 L/min; pump flow adjustable in ten levels to suit different sampling conditions. Data logging: stores up to 100,000 records; storage interval usersettable with a minimum of 5 s; logs are browseable on the device. Display: LCD shows gas type, gas unit, current concentration, maximum measured value, local time, and ambient temperature for quick situational awareness. Alarms: multimode alarm with sound, light, and vibration to ensure alarms are noticed in noisy or lowvisibility environments. Calibration and selftest: supports zero calibration and selfcheck functions for reliable measurement accuracy; onekey factory reset restores default settings to recover from misuse. Compensation: temperature and pressure compensation included to improve concentration calculation across different environments. Battery and portability: largecapacity lithium polymer rechargeable battery for extended field operation; device packaged in an upscale aluminum suitcase for secure transport. Construction: shell made from engineered plastics with nonslip surface, water resistant and dust resistant design, and a rugged build for field use. Language: operating interface supports English. Key specifications Measuring range: 0 to 100 %VOL Resolution: 0.01 %VOL Accuracy/precision: 2% FS Repeatability: +/ 1% Zero shift: +/ 1% F.S per year Response time: 10 s Recovery time: 10 s Linearity error: +/ 1% Sampling flow: up to 1 L/min, pump adjustable in ten stages Data capacity: 100,000 records Minimum data interval: 5 s Operating temperature: 40 to 70 C Humidity range: 0 to 95% RH Alarm modes: sound, light, vibration Display type: LCD Dimensions: 205 x 75 x 32 mm Practical applications and scenarios Confined space entry: Verify oxygen levels before and during entry to industrial tanks, sewers, or utility vaults using pump sampling to reach remote points. Routine maintenance and inspection: Portable monitoring during HVAC, boiler room, or mechanical room inspections to record oxygen trends and trigger alarms if levels change. Field testing and calibration: Use integrated data logging and temperature and pressure compensation to collect repeatable O2 measurements for process checks, instrument comparison, or site surveys. What customers should know Designed for portable, onsite oxygen monitoring with clear readout and audible/visible/tactile alarms. Adjustable pump flow and extensive data storage make it suitable for sampling from remote or hardtoreach locations. Regular zero calibration and the device selfcheck function improve measurement reliability over time. Housed in a rugged case for secure transport and protection in typical industrial environments. This oxygen detector combines precise electrochemical sensing, flexible sampling, and robust data logging to provide a practical solution for oxygen monitoring tasks in industrial and field settings.