AD81

g GAS SENSORS : TYPE AD81 CO & NO2 GAS SENSOR DESCRIPTION: PROVISIONAL DATA DIMENSIONS: Gas sensor made of thick film element. FEATURES: • Two sensing element on one chip: for CO(gasoline exhaust gas) and NO2(diesel exhaust gas) • Low influence of ambient atmosphere • Typical applications include automatic damper in automotive cabin. DATA: Operating conditions: Operating temperature ........... -10 to + 55oC Storage temperature .............. -30 to + 85oC Load Resistor RL .............................. Variable Heater resistance ....................... 19Ω (nom) Rated power consumption PS ..... 20mW nom Rated working voltage of circuit VC ........................ ............................................... 5 ± 0.2V d.c. ......................................... 5 ± 0.2 Vrms a.c. Parts and material: Sensing element .......... Semiconducting oxide Thick film heater ............................ Platinum Case .............................................. Nylon 66 Pin .............................................. Nickel alloy Flame arrestor ............................................ .... Double 100-mesh stainless gauze(SUS316) Dimensions in mm Typical gas sensitivity: Sensitivity characteristics: Specification Conditions Output voltage 2 – 0.3 V in clean air Voltage -0.5 – 0.15V 2ppm of NO2 change in gas Power 620mW (nom) consumption Mechanical characteristics: Test Condition Vibration Frequency: 10 - 500 Hz Amplitude (10 - 50Hz): 2 mm Acceleration (50 - 500 Hz) 10G Recipricol scanning time: 5 min Test time: 2 hours each for X, Y and Z directions Shock Acceleration: 100G Number of impacts: 5 Performance Should satisfy the specifications shown in the sensitivity characteristics Data sheet D-AD81-1 Crown Industrial Estate, Priorswood Rd Taunton, Somerset TA2 8QY UK Tel +44 (0)1823 335200 Fax +44 (0)1823 332637 808 US Highway 1 Edison, New Jersey 08817-4695 USA Tel +1 (732) 287 2870 Fax +1 (732) 287 8847 967 Windfall Road St Marys, Pennsylvania 15857-3397 USA Tel +1 (814) 834 9140 Fax +1 (814) 781 7969 g GAS SENSORS : TYPE AD81 CO & NO2 GAS SENSOR NOTES: PROVISIONAL DATA Test conditions: Pin allocation and standard test circuit: Atmosphere Clean air at 25±2oC and 50±5% RH without noise gas. Circuit condition Vc (circuit voltage) ............................ 5±0.05V RL ............................................ 340 to 1000Ω Preheat time ..................................... 24 hours Test gas NO2 ....................................................... 2ppm WARNING: Do not use if the case or wire netting is damaged, otherwise built-in heater may cause explosions or fires. Do not disassemble or change any parts. Use only within specified conditions. Data sheet D-AD81-1 Crown Industrial Estate, Priorswood Road Taunton, Somerset TA2 8QY UK Tel +44 (0) 1823 335200 Fax +44 (0) 1823 332637 808 US Highway 1 Edison, New Jersey 08817-4695 USA Tel +1 (732) 287 2870 Fax +1 (732) 287 8847 967 Windfall Road St. Marys, Pennsylvania 15857-3397 USA Tel +1 (814) 834 9140 Fax +1 (814) 781 7969