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MQ-2 Semiconductor Sensor for Combustible Gas Sensitive material of MQ-2 gas sensor is SnO2, which with lower conductivity in clean air. When the target combustible gas exist, The sensor’s conductivity is more higher along with the gas concentration rising. Please use simple electrocircuit, Convert change of conductivity to correspond output signal of gas concentration. MQ-2 gas sensor has high sensitity to LPG, Propane and Hydrogen, also could be used to Methane and other combustible steam, it is with low cost and suitable for different application. Character Configuration *Good sensitivity to Combustible gas in wide range * High sensitivity to LPG, Propane and Hydrogen * Long life and low cost * Simple drive circuit Application * Domestic gas leakage detector * Industrial Combustible gas detector * Portable gas detector Technical Data Basic test loop T Model No. MQ-2 Sensor Type Semiconductor Standard Encapsulation Bakelite (Black Bakelite) Detection Gas Combustible gas and smoke VRL 300-10000ppm Concentration Vc Heater Voltage VH 5.0V±0.2V ACorDC RL Adjustable Load Resistance Heater Resistance Heater consumption Character Sensing Resistance RH DC GND The above is basic test circuit of the sensor. 31Ω±3Ω（Room Tem.） heater voltage （VH） and test voltage （VC） . VH used to supply certified working PH ≤900mW temperature to the sensor, while VC used to detect voltage (VRL) on load resistance Rs 2KΩ-20KΩ(in 2000ppm C3H8 ) （RL）whom is in series with sensor. The sensor has light polarity, Vc need DC...
Web Site: www.parallax.com Forums: forums.parallax.com Sales: email@example.com Technical: firstname.lastname@example.org Office: (916) 624-8333 Fax: (916) 624-8003 Sales: (888) 512-1024 Tech Support: (888) 997-8267 PING))) Ultrasonic Distance Sensor (#28015) The Parallax PING)))™ ultrasonic distance sensor provides precise, non-contact distance measurements from about 2 cm (0.8 inches) to 3 meters (3.3 yards). It is very easy to connect to microcontrollers such as the BASIC Stamp®, Propeller chip, or Arduino, requiring only one I/O pin. The PING))) sensor works by transmitting an ultrasonic (well above human hearing range) burst and providing an output pulse that corresponds to the time required for the burst echo to return to the sensor. By measuring the echo pulse width, the distance to target can easily be calculated. Features Key Specifications Range: 2 cm to 3 m (0.8 in to 3.3 yd) Burst indicator LED shows sensor activity Bidirectional TTL pulse interface on a single I/O pin can communicate with 5 V TTL or 3.3 V CMOS microcontrollers Input trigger: positive TTL pulse, 2 µs min, 5 µs typ. Echo pulse: positive TTL pulse, 115 µs minimum to 18.5 ms maximum. RoHS Compliant Supply voltage: +5 VDC Supply current: 30 mA typ; 35 mA max Communication: Positive TTL pulse Package: 3-pin SIP, 0.1” spacing (ground, power, signal) Operating temperature: 0 – 70° C. Size: 22 mm H x 46 mm W x 16 mm D (0.84 in x 1.8 in x 0.6 in) Weight: 9 g (0.32 oz)
GP2D12 Optoelectronic Device FEATURES • Analog output • Effective Range: 10 to 80 cm • LED pulse cycle duration: 32 ms 1 2 3 • Typical response time: 39 ms • Typical start up delay: 44 ms • Average current consumption: 33 mA PIN SIGNAL NAME • Detection area diameter @ 80 cm: 6 cm 1 VO DESCRIPTION 2 GND The GP2D12 is a distance measuring sensor with integrated signal processing and analog voltage output. 3 VCC GP2D12-8 Figure 1. Pinout VCC GND PSD SIGNAL PROCESSING CIRCUIT VOLTAGE REGULATOR OSCILLATOR CIRCUIT LED DRIVE CIRCUIT OUTPUT CIRCUIT LED VO DISTANCE MEASURING IC GP2D12-4 Figure 2. Block Diagram 1 Data Sheet GP2D12 ELECTRICAL SPECIFICATIONS Absolute Maximum Ratings Ta = 25°C, VCC = 5 VDC PARAMETER SYMBOL RATING UNIT Supply Voltage VCC -0.3 to +7.0 V Output Terminal Voltage VO -0.3 to (VCC + 0.3) V Operating Temperature Topr -10 to +60 °C Storage Temperature Tstg -40 to +70 °C Operating Supply Voltage PARAMETER SYMBOL RATING UNIT Operating Supply Voltage VCC 4.5 to 5.5 V Electro-optical Characteristics Ta = 25°C, VCC = 5 VDC PARAMETER SYMBOL Measuring Distance Range ΔL Output Voltage VO CONDITIONS MIN. TYP. MAX. UNIT NOTES 10 80 cm 1, 2 0.25 L = 80 cm 0.4 0.55 V 1, 2 Output Voltage Difference ΔVO Output change at L change 1.75 (80 cm - 10 cm) 2.0 2.25 V 1, 2 Average Supply Current ICC L = 80 cm 33 50 mA 1, 2 - NOTES: 1. Measurements made with Kodak R-27 Gray Card, using the white side, (90% reflectivity). 2. L = Distance to reflective object. VCC (POWER SUPPLY) 38.3 ms ±9.6 ms DISTANCE MEASURMENT OPERATING 1st MEASUREMENT 2nd MEASUREMENT nth MEASUREMENT VO (OUTPUT) UNSTABLE OUTPUT 1st OUTPUT 2nd OUTPUT nth OUTPUT 5.0 ms MAX. GP2D12-5 Figure 3. Timing Diagram 2 Data Sheet GP2D12 RELIABILITY The reliability of requirements of this device are listed in Table 1. Table 1. Reliability TEST ITEMS TEST CONDITIONS FAILURE JUDGEMENT CRITERIA SAMPLES (n), DEFECTIVE (C) Temperature Cycling One cycle -40°C (30 min.) to +70°C in 30 minutes, repeated 25 times n = 11, C = 0 High Temperature and High Humidity Storage +40°C, 90% RH, 500h n = 11, C = 0 High Temperature Storage +70°C, 500h n = 11, C = 0 Low Temperature Storage -40°C, 500h Operational Life (High Temperature) +60°C, VCC = 5 V, 500h Mechanical Shock 100 m / s2, 6.0 ms 3 times / ±X, ±Y, ±Z direction n = 6, C = 0 Variable Frequency Vibration 10-to-55-to-10 Hz i n 1 minute Amplitude: 1.5 mm 2 h i n e a c h X, Y, Z direction n = 6, C = 0 Initial × 0.8 > VO VO > Initial × 1.2 n = 11, C = 0 n = 11, C = 0 NOTES: 1. Test conditions are according to Electro-optical Characteristics, shown on page 2. 2. At completion of the test, allow device to remain at nominal room temperature and humidity (non-condensing) for two hours. 3. Confidence level: 90%, Lot Tolerance Percent Defect (LTPD): 20% / 40%. MANUFACTURER’S INSPECTION Inspection Lot Inspection shall be carried out per each delivery lot. Inspection Method A single sampling plan, normal inspection level II based on ISO 2859 shall be adopted. Table 2. Quality Level DEFECT INSPECTION ITEM and TEST METHOD AQL (%) Major Defect Electro-optical characteristics defect 0.4 Minor Defect Defect to appearance or dimensions (crack, split, chip, scratch, stain)* 1.0 NOTE: *Any one of these that affects the Electro-optical Characteristics shall be considered a defect.
PING)))™ Ultrasonic Distance Sensor (#28015) The Parallax PING))) ultrasonic distance sensor provides precise, non-contact distance measurements from about 2 cm (0.8 inches) to 3 meters (3.3 yards). It is very easy to connect to BASIC Stamp® or Javelin Stamp microcontrollers, requiring only one I/O pin. The PING))) sensor works by transmitting an ultrasonic (well above human hearing range) burst and providing an output pulse that corresponds to the time required for the burst echo to return to the sensor. By measuring the echo pulse width the distance to target can easily be calculated. The PING))) sensor has a male 3-pin header used to supply power (5 VDC), ground, and signal. The header allows the sensor to be plugged into a solderless breadboard, or to be located remotely through the use of a standard servo extender cable (Parallax part #805-00002). Standard connections are show in the diagram to the right. Quick-Start Circuit This circuit allows you to quickly connect your PING))) sensor to a BASIC Stamp® 2 via the Board of Education® breadboard area. The PING))) module’s GND pin connects to Vss, the 5 V pin connects to Vdd, and the SIG pin connects to I/O pin P15. This circuit will work with the example program Ping_Demo.BS2 listed on page 7. Servo Cable and Port Cautions If you want to connect your PING))) sensor to a Board of Education using a servo extension cable, follow these steps: 1. When plugging the cable onto the PING))) sensor, connect Black to GND, Red to 5 V, and White to SIG. 2. Check to see if your Board of Education servo ports have a jumper, as shown at right. 3. If your Board of Education servo ports have a jumper, set it to Vdd as shown. 4. If your Board of Education servo ports do not have a jumper, do not use them with the PING))) sensor. These ports only provide Vin, not Vdd, and this may damage your PING))) sensor. Go to the next step. 5. Connect the servo cable directly to the breadboard with a 3-pin header. Then, use jumper wires to connect Black to Vss, Red to Vdd, and White to I/O pin P15. Board of Education Servo Port Jumper, Set to Vdd © Parallax, Inc. • PING)))TM Ultrasonic Distance Sensor (#28015) • v1.3 6/13/2006
pH Probe Datasheet A pH electrode is a passive device that detects a current generated from hydrogen ion activity. This current (which can be positive or negative) is very weak and cannot be detected with a multimeter, or an analog to digital converter. This weak electrical signal can easily be disrupted and care should be taken to only use proper connectors and cables. ADC Result will always read zero. 00000000 Result will always read zero. The current that is generated from the hydrogen ion activity is the reciprocal of that activity and can be predicted using this simple equation: Where R is the ideal gas constant. T is the temperature in Kelvin. F is the Faraday constant. Because a pH probe is a passive device it can pick up voltages that are transmitted through the solution being measured. This will result in incorrect readings and will slowly damage the pH probe over time. Atlas-Scientific.com Copyright © Atlas Scientific LLC All Rights Reserved pH Probe This pH Probe can be fully submerged up to the BNC connector indefinitely. • pH range: 0-14 (Na+ error at >12.3 pH) • Temperature range: 1˚C to 99˚C • Max pressure: 690 kPa (100PSI) • Dimensions: 12mm X 150mm (1/2" X 6") • Resolution: This is an analog device so, its resolution is limited only by the device reading it. Helpful Operating Tips FIG. 1 FIG. 2 1. The pH Probe is shipped in a plastic bottle containing pH Probe Storage Solution. The probe should remain in the bottle until it is used. If the probe is used infrequently, the bottle and its solution should be saved and the probe stored in it (See Sensor Storage Section). Take out the probe by loosening the plastic top of the bottle counter clockwise and pulling the probe out. Slide the cap and O-ring off the probe. (SEE FIGS 1 & 2).
Description • Accuracy: - ±0.25 (typical) from -40°C to +125°C - ±0.5°C (maximum) from -20°C to 100°C - ±1°C (maximum) from -40°C to +125°C • User-Selectable Measurement Resolution: - +0.5°C, +0.25°C, +0.125°C, +0.0625°C • User-Programmable Temperature Limits: - Temperature Window Limit - Critical Temperature Limit • User-Programmable Temperature Alert Output • Operating Voltage Range: 2.7V to 5.5V • Operating Current: 200 µA (typical) • Shutdown Current: 0.1 µA (typical) • 2-wire Interface: I2C™/SMBus Compatible • Available Packages: 2x3 DFN-8, MSOP-8 Microchip Technology Inc.’s MCP9808 digital temperature sensor converts temperatures between -20°C and +100°C to a digital word with ±0.25°C/±0.5°C (typical/maximum) accuracy. The MCP9808 comes with user-programmable registers that provide flexibility for temperature sensing applications. The registers allow user-selectable settings such as Shutdown or Low-Power modes and the specification of temperature Alert window limits and critical output limits. When the temperature changes beyond the specified boundary limits, the MCP9808 outputs an Alert signal. The user has the option of setting the Alert output signal polarity as an active-low or activehigh comparator output for thermostat operation, or as a temperature Alert interrupt output for microprocessorbased systems. The Alert output can also be configured as a critical temperature output only. This sensor has an industry standard 400 kHz, 2-wire, SMBus/I2C compatible serial interface, allowing up to eight or sixteen sensors to be controlled with a single serial bus (see Table 3-2 for available Address codes). These features make the MCP9808 ideal for sophisticated, multi-zone, temperature-monitoring applications.
The LM34 series are precision integrated-circuit temperature sensors, whose output voltage is linearly proportional to the Fahrenheit temperature. The LM34 thus has an advantage over linear temperature sensors calibrated in degrees Kelvin, as the user is not required to subtract a large constant voltage from its output to obtain convenient Fahrenheit scaling. The LM34 does not require any external calibration or trimming to provide typical accuracies of ± 1⁄2˚F at room temperature and ± 11⁄2˚F over a full −50 to +300˚F temperature range. Low cost is assured by trimming and calibration at the wafer level. The LM34’s low output impedance, linear output, and precise inherent calibration make interfacing to readout or control circuitry especially easy. It can be used with single power supplies or with plus and minus supplies. As it draws only 75 µA from its supply, it has very low self-heating, less than 0.2˚F in still air. The LM34 is rated to operate over a −50˚ to +300˚F temperature range, while the LM34C is rated for a −40˚ to +230˚F range (0˚F with improved accuracy). The LM34 series is available packaged in hermetic TO-46 transistor packages, while the LM34C, LM34CA and LM34D are also available in the plastic TO-92 transistor package. The LM34D is also available in an 8-lead surface mount small outline package. The LM34 is a complement to the LM35 (Centigrade) temperature sensor.
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PACKAGE CONTENTS PLEASE READ AND UNDERSTAND THE ENTIRE INSTRUCTION MANUAL BEFORE PROCEEDING. THIS WILL HELP YOU UNDERSTAND THE DEGREE OF DIFFICULTY AND WILL GIVE YOU INSIGHT TO THE TOOLS AND SUPPLIES NECESSARY TO SUCCESSFULLY COMPLETE THE JOB. 1 Place car on jack stands. Check owner’s manual for correct jack points. Car should be at least 12 inches off the ground to allow the exhaust pieces enough clearance for removal and access to the lower hardware. Make sure the car is resting on all four jack stands securely. Open hood and place covers on fenders Remove engine cover by pulling upwards. Remove front wheels. 2 Remove wheelwell splash shields. Image shows location of fasteners. 3 Remove plastic undertray from bottom of engine bay. Image shows the location of fasteners. _________________ -2TRI-POINT ENGINEERING 4 Remove front bumper cover: Remove the screw holding bumper cover to the fender, about 1.0” back from wheel opening. Remove the 2 Phillip screws along with the 2 rubber buffers on top, between the head lamp and grill. R The rubber buffers come out by lifting the top rubber section with a thin flat blade screw driver. Gently raise this portion up to release the clip. Carefully pull bumper cover off part way and unplug outside air temp and fog lights if equipped. Then continue to remove bumper cover and set out of the way. _________________ -3TRI-POINT ENGINEERING 5 Drain Coolant : Loosen coolant fill cap on passenger side of engine bay. Remove drain plug, shown in photo. Drain coolant into large container and dispose of properly. Once coolant has finished draining, replace drain plug and tighten. Tighten coolant fill cap in engine bay. 6 Battery cover removal: Release the 3 clips shown in photo and lift cover. _________________ -4TRI-POINT ENGINEERING 7 Disconnect the negative battery cable and tuck cable behind battery. Remove the plastic clip securing the battery box duct (shown in photo, behind headlight) and lift out the duct assembly. 8 Remove air intake system: Squeeze both sides of the blue clip used to secure valvecover breather hose to rubber intake pipe and slide backwards to remove. Repeat process at the valvecover end of hose and remove. Unplug Airflow (MAF) sensor and temperature sensor. Loosen hose clamp attached to throttle body. Lift and unhook rubber strap securing airbox and lift whole airbox assembly straight up to remove. COVER THE OPEN THROTTLE BODY TO ENSURE NO FOREIGN MATERIAL GETS INSIDE DURING INSTALLATION
When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See the following: For 2002 models, see COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery. For 2003 models, see COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery. For 2004 models, see COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery. Cooling fan motors operate when Powertrain Control Module (PCM) determines fan operation depending on crankshaft position, Engine Coolant Temperature (ECT) sensor, vehicle speed, Intake Air Temperature (IAT) sensor, A/C switch and refrigerant pressure switch inputs. Cooling fans receive power through the cooling fan relay. Condenser fan operates only when A/C compressor clutch engages except 2004 models with turbocharger which uses dual fans for engine cooling with or without A/C operation. See WIRING DIAGRAMS . COMPONENT LOCATION For component locations, refer to illustrations. See Fig. 1 -Fig. 3 . http://www.eautorepair.net/app/PrintItems.asp?S0=2097152&S1=0&SG=%7BCF1A455F%... 3/9/2006