? anti-H2, anti-corrosion sensors, anti-cross-interference, and advanced digital processing technology; 
 ? Life span: 3 years to 4 years; 
 ? measurement of the signal output of a linear expression; 
 ? Manual / zero / the end of calibration; 
 ? brown-out protection, start self-recovery; 
 ? Digital temperature compensation; 
 ? full Chinese menu operation (English version ordering instructions); 
 Applications 
 JNYQ-O-12 series type analytical instruments can be used for thermoelectric, air separation, cement, metallurgy, chemical fertilizer, chemical, medical care, preservation, environmental protection, scientific research fields. 
 Detection principle 
 JNYQ-O-12 type for portable analytical instruments, imports of the oxygen sensor and advanced digital processing technology to achieve automatic rapid detection of oxygen. 
 Technical parameters: 
 ◆ Measuring range: 0.0 ~ 1000 × 10-6; 0.00 ~ 25.0% 
 ◆ Accuracy: ≤ ± 5% FS (0.0 ~ 10 x 10-6); 
 ≤ ± 2% FS (10 to 1000 × 10-6); 
 ≤ ± 2% FS (0.00 to 25.0%); 
 ◆ Stability: ≤ ± 2% zero drift FS/7d; 
 Range drift ≤ ± 2% FS/7d; 
 ◆ Repeatability: ≤ ± 1%; 
 ◆ Resolution: 0.01; 
 ◆ working environment: Temperature: -5 ℃ ~ +45 ℃; 
 Humidity: ≤ 90% RH; 
 ◆ Charging Power Supply: 220VAC ± 10% 50Hz ± 5%; 
 ◆ Dimensions: (W) 260 x (high) 140 × (D) 300; 
 ◆ Weight: about 2.6kg;