3. Packages 3.1 Characteristics Model number S4 (Package) Sensing element type Target gas VH Heater Voltage Electrical characteristics PH Powe

Transcription

1 1/7 Sensor (Carbon dioxide) for the detection of CO2 Features High selectivity to CO 2 Long-term stability Low dependency on humidity & temperature Applications Air quality control Agriculture & fermentation process control Ventilator S4 - () 1. Sensitivity characteristic slope 2. Basic Measuring Circuit 550 MS EMF Heater Temp. sensor (RTD) or Gas sensor Electrolyte Concentration ( EMF ) Log( Concentration) EMF = 0 β β : Slop, EMFo : Electromotive force Input impedance< 100GΩ Bias current < 1 pa RTD : 85 ~ 120Ω Heater : 14.0±0.2Ω

2 3. Packages 3.1 Characteristics Model number S4 (Package) Sensing element type Target gas VH Heater Voltage Electrical characteristics PH Power consumption under standard Electromotive force test conditions Ic Sensitivity slope Sensor characteristics Environmental condition Response time(t90) Beginning stability time(t90) Reliability Temp. sensor (Platinum RTD) Operation conditions Solid electrolyte CO 2(Carbon dioxide) Measuring range Power DC 5volt ± 0.5% RH Heater resistance 14.0Ω±0.2Ω Gas sensor (Smoke) β= Rgas/Rair 5.0V±2% Less than 800 mw 430~540 2) mv (0ppm CO 60.0 ~72.0 Reaction :less than 5sec Recovery:less than 10sec Less then 60minute ±5% at the concentration Resolution Less than 0.02% Resistance TCR Measuring Circuit Resistance Target gas Sensitivity * Storage temp. & Relative humidity : -20 to 80, less then dew point * Oxygen concentration : 21% ± 10%(The sensitivity characteristics are independent by variation in oxygen concentration 85~120 Ω Less then 3700ppm/ k Less than 0.2mA Cons tant current -10 ~ 50, 5 ~ 95%RH Storage conditions -20 ~ 80, 0 ~ 95%RH * test condition (balance gas : clean air, or special gas) ㆍTemp. : 20 ±2, ㆍ Humidity : RH65%±5%, ㆍ Pressure : 1atm ㆍTest chamber : more than 1l/EA, ㆍ Pre-heating time : more than 24hr

3 Attached data * Measuring S/W, * Temperature sensor data (Rrtd, TCR) * Sensor characteristics (Slope, EMF0,) Dimensions Application circuit S4 φ CO2 sensor (Temp. sensor) S42 φ CO2 sensor HC gas sensor

4 3.2 Reaction time(t90) EMF Clean air EMF air 90% Carbon dioxide Clean air EMF air 90% * Reaction Time(T90) : Less then 5sec [Between EMF air & EMF gas ] * Recovering Time(T90) : Less then 10sec [Between EMF gas & EMF air ] * Beginning stability time(t95) : Less then 60 min. EMF gas min EMF air : Sensor EMF without gases EMF gas : Sensor EMF after blowing gases * test conditions Test gas condition : CO2 in air at 20±2, 65±5%RH Circuit condition : VH = 5.0±0.05V DC Conditioning period before test : 2 days 3.3 Table No. : EMF0 EMF0(SP) EMF0(SP) EMF0(SP) 430 ~ ~ ~ ~ ~ ~ ~ ~ ~ 540 No. : Slope Slope Slope Slope 58.5 ~ ~ ~ ~ ~ ~ ~ ~ ~ Product code MS Slope No. EMF0 No. Method for compensation temp. or interference gases Target gas in air Power Remark S4 Temperature sensor (RTD) CO2 Max. 800 mw S42 HC Gas sensor (Semi-conductor type) CO2, HC Max. 800 mw

5 4. Module 4.1 Characteristics Model number S4 -XXXX (Module) S42 -XXXX(Module) Sensing Method Target gas Measuring range Dimensions CO2 :Solid electrolyte Temp. : Platinum RTD CO2(Carbon dioxide) (100 ~ 10,000ppm) Resolution, Accuracy Less then ±0.02%, ±7% Less then ±0.02%, ±15% 40 W X 58.8 H CO2 :Solid electrolyte VOCs : Semiconductor CO2(Carbon dioxide) Smoke (HC), VOCs CO2 : 100 ~ 2,000ppm VOCs : 10 ~ 500ppm 40 W X 58.8 H Warm up time Beginning stability time : 60 min LED display : minus count Beginning stability time : 60min LED blinking Circuit Voltage VC Power consumption Less than 1.6w Less than 1.5W PH 12.0V ~13.0V 12.0V±0.1V Response time < 5sec to 100% of step change Output options Relay output Interface DC 12V, Hi(12V) / Low(0V) User defined upper/lower ppm setting for software (factory set at upper-1,000ppm, lower-700ppm) RS485 or RS232 serial port (select) Output data Analogue signal (Refer to 4.2) Calibration interval Operating range storage 2 years recommended Temp. : -10 ~ 50, Humidity : 5 ~ 95%RH, Non-condensing Temp. : -20 ~80, Humidity : 0 ~ 95%RH Environmental test condition * test condition (balance gas : clean air, or special gas) ㆍ Temp. : 20 ±5, ㆍ Humidity : RH65%±10%, ㆍ Pressure : 1atm ㆍ Test chamber : more than 1l/EA, ㆍ Pre-heating time : more than 6hr * Operation temp. & Relative humidity : -10 to 60, less then dew point * storage temp. : -20 to 80 * Oxygen concentration : 21% ± 2%(The sensitivity characteristics are influenced by variation in oxygen concentration

6 6/7 4.2 Dimension & External output Component 1 Power / Relay Output 12i G 12V RY Molex Connector AX RED LED Relay 0ppm Off Off Low Low Power : 12i 12V(+) G ground Relay : 12V(+) RY : Relay out Hi : 12V Low : 0V 700ppm (default) Off Off Low Low 1,000ppm (default) On On Hi Hi 2 Data Output VSN GND OUT +12 Molex Connector AX 3 RS232C : factory using S/W control RTD or HC gas output Connector 4~20 ma Connector (250Ω) 4 RS485 port : Attached data (Molex Connector : AX)

7 7/7 4.3 Sensor Installation (refer to specification) This will show you how to perform steps for installation Select a mounting location with good air circulation within the area to be monitored. Select a mounting location that is not near ventilation inlets, doors, windows, or other fresh air entry points. For a while installation, At first, it is low concentration display, after a few minutes, display of concentration is appeared high and then after 60minutes sensor will be stabilized. 4.4 Product MS Relay output concentration or etc. Serial number of software(rs485 protocol etc.) and customer code Extended sensing concentration Characteristics of circuit or customer code Sensor characteristics 1 Characteristics of circuit Circuit S Others 2 Sensing concentration Others Concentration (ppm) 0 ~ 2,000 0 ~ 4,000 0 ~ 8,000 0 ~ 10,000 0 ~ 20,000 3 Serial number of software or RS485 protocol Others Release RS232 RS485 4 Relay output Concentration (ppm) 1 Hi:1,000 Low:700 Others 5. Others In case of requirement for detail data, we will provide specification