Description Overview GAOTek fixed no gas detector uses the original imported sensor and the ultra-low power 32-bit microprocessor, so with the advantages of high precision, good repeatability, stable signal, respond quickly, etc. Possible connected with many controllers’ system, such as PLC, DCS, computer and other, with the function of remote monitor and alarm, data logger and analysis. Common applications is gas safety inspection and alarm for industrial scene for NO gas inspection. Common applications are gas safety inspection and alarm for industrial scene, such as petroleum refinery, chemical plants, LPG stations, boiler rooms, gas stations, paint spray booths, metallurgy, mining, fire, environmental protection, etc., where need to inspect the Nitric Oxide (NO) gas concentration. Features LED screen displaying gas concentration, gas type, unit, instrument status Independent air chamber Automatic identification of key parameters of the sensor Protection function to prevent high gas concentration attack Infrared remote controller operation With the 16bit ADC acquisition chip Designed with four-layer circuit board High anti-interference ability Technical Specifications Applicable Gas Nitric Oxide (NO) Detecting Range 0 ppm to 1 ppm,10 ppm,20 ppm,100 ppm,250 ppm,1000 ppm,2000 ppm,5000 ppm or customized Resolution 0.01 ppm (0 ppm to 100 ppm); 0.1 ppm (0 ppm to 1000 ppm); 1 ppm (>1000 ppm) Sampling Diffusion or pump-suction, circulation selectable Accuracy ≤±3% FS Repeatability ≤±1% Zero Drift ≤±1% (F.S/year) Sensor Type Electrochemical sensor Response Time (T90) ≤20 S Working Voltage 24 V DC (16 V DC to 30 V DC) Output Signals (Standard) Three-wire system 4 mA to 20 mA standard signals output, available for PLC, DCS, etc. (Optional) Four-wire system RS485 digital signal output. (Optional) Frequency signal 200~1000Hz output. Two-level relay output:220 V AC 0.5 A, 5 V DC 0.5 A Installation Means Wall mounted, Pipe type (Thread: M 40 x M 1.5) Material Of Body Cast aluminum Explosion-Proof Index Ex d IIC T6 Protection Grade IP66 Electrical Interface 3/4″ NPT (Female Screw), 1/2″ NPT (Female Screw) Transmit Distance ≤1.2 mi (2000 m) Operating Environment Temperature: -22 ℉ to 140 ℉ (-30 ℃ to 60 ℃) Customized for special demands Humidity: ≤95% RH (non- condensing); if >90% RH, can add the filter Pressure: 86kPa to 106kPa Dimension 8.3 in x 5.5 in x 3.6 in (210 mm ×140 mm × 92 mm) L×W×H Weight About 0.33 Ib (1.5 Kg)
