Product- Sensors

This semiconductor gas sensor detects the presence of combustible gas and smoke at concentrations from 300 to 10,000 ppm. The sensor’s simple analog voltage interface requires only one analog input pin from your microcontroller.

Overview:

This flammable gas and smoke sensor detects the concentrations of combustible gas in the air and outputs its reading as an analog voltage. The sensor can measure concentrations of flammable gas of 300 to 10,000 ppm. The sensor can operate at temperatures from -20 to 50°C and consumes less than 150 mA at 5 V.

This alcohol sensor is suitable for detecting alcohol concentration on your breath, just like your common breathalyzer. It has a high sensitivity and fast response time. Sensor provides an analog resistive output based on alcohol concentration. The drive circuit is very simple, all it needs is one resistor. Just measure the voltage across the resistor and confirm!!

Features:

• 5V DC or 5V AC
• Requires heater voltage
• Operation Temperature: -10 to 70 degrees C
• Heater consumption: less than 750mW
  

Dimensions

• 16.8mm diameter
• 9.3 mm height without the pins

This is a simple-to-use compressed natural gas (CNG) sensor, suitable for sensing natural gas (composed of mostly Methane [CH4]) concentrations in the air. The MQ-4 can detect natural gas concentrations anywhere from 200 to 10000ppm.

This sensor has a high sensitivity and fast response time. The sensor's output is an analog resistance. The drive circuit is very simple; all you need to do is power the heater coil with 5V, add a load resistance, and connect the output to an ADC.

This sensor comes in a package similar to our MQ-3 alcohol sensor, and can be used with the breakout board below.

They are used in gas leakage detecting equipments in family and industry, are suitable for detecting of LPG, natural gas , town gas, avoid the noise of alcohol and cooking fumes and cigarette smoke.

Features:

• High sensitivity to LPG, natural gas , town gas
• Small sensitivity to alcohol, smoke.
• Fast response .
• Stable and long life
• Simple drive circuit

This LPG Gas Sensor (MQ6), ideal sensor for use to detect the presence of a dangerous LPG leak in your Home, car or in a service station, storage tank environment. This unit can be easily incorporated into an alarm unit, to sound an alarm or give a visual indication of the Combustible Gas / LPG concentration. The sensor has excellent sensitivity combined with a quick response time. The sensor can also sense iso-butane, propane, LNG and cigarette smoke. This LPG Gas Sensor can be used to make wireless Gas leak detector in home security system.

LPG Gas Sensor (MQ6) Features

• High Sensitivity to LPG, iso-butane, propane
• Small sensitivity to alcohol, smoke
• Detection Range: 100 - 10,000 ppm iso-butane propane
• Fast Response Time: <10s
• Simple drive circuit
• Heater Voltage: 5.0V
• Dimensions: 18mm Diameter, 17mm High excluding pins, Pins - 6mm High
  

Applications

• Gas leak detection system
• Fire/Safety detection system
• Gas leak alarm
• Gas detector

MQ-7 is a Carbon Monoxide (CO) sensor, suitable for sensing Carbon Monoxide concentrations (PPM) in the air. The MQ-7 sensor can measure CO concentrations ranging from 20 to 2000ppm.

This sensor has a high sensitivity and fast response time. The sensor's output is an analog resistance. The drive circuit is very simple , just a voltage devider; all you need to do is power the heater coil with 5V DC or AC , add a load resistance, and connect the output to an ADC or a simple OPAMP comparator.

MQ135 gas sensor has high sensitity to Ammonia, Sulfide and Benze steam, also sensitive to smoke and other harmful gases. It is with low cost and suitable for different application.

Character

• Good sensitivity to Harmful gases in wide range
• High sensitivity to Ammonia, Sulfide and Benze
• Long life and low cost
• Long life and low cost
  

Applications

• Domestic air pollution detector
• Industrial air pollution detector
• Portable air pollution detector

MQ303A is semiconductor sensor is for Alcohol detection. It has good sensitivity and fast response to alcohol, suitable for portable alcohol detector.

Character

• High sensitivity
• Fast response and resume
• Long life and low cost
• Mini Size
  

The TSOP1738 series are miniaturized receivers for infrared remote control systems. PIN diode and preamplifier are assembled on lead frame, the epoxy package is designed as IR filter. The demodulated output signal can directly be decoded by a microprocessor. TSOP1738 is the standard IR remote control receiver series, supporting all major transmission codes.

The sensor can be used for Proximity detection application along with a IR led in robotics and security systems. It receives IR signal at 38khz frequency.

TSOP1738 Features

• Photo detector and preamplifier in one package
• Internal filter for PCM frequency
• Improved shielding against electrical field
  disturbance
• TTL and CMOS compatibility
• Output active low
• Low power consumption
• High immunity against ambient light
• Continuous data transmission possible
  (up to 2400 bps)
• Suitable burst length 10 cycles/burst
  

Technical specification

• Supply Volt: 5 V
• Power consumption: 0.4 to 1.0 mA
• Min. Ee irradiation: 0.35 mW/m2 typ.
• Angle of detection: 90
• Dimensions of the casing (mm): 12.5 x 10 x Thickness 5.8
  
  

Description

The Allegro® A1101-A1104 and A1106 Hall-effect switches are next generation replacements for the popular Allegro 312x and 314x lines of unipolar switches. The A110x family, produced with BiCMOS technology, consists of devices that feature fast power-on time and low-noise operation. Device programming is performed after packaging, to ensure increased switchpoint accuracy by eliminating offsets that can be induced by package stress. Unique Hall element geometries and low-offset amplifiers help to minimize noise and to reduce the residual offset voltage normally caused by device overmolding, temperature excursions, and thermal stress.

The A1101-A1104 and A1106 Hall-effect switches include the following on a single silicon chip: voltage regulator, Hall-voltage generator, small-signal amplifier, Schmitt trigger, and NMOS output transistor. The integrated voltage regulator permits operation from 3.8 to 24 V. The extensive on-board protection circuitry makes possible a ±30 V absolute maximum voltage rating for superior protection in automotive and industrial motor commutation applications, without adding external components. All devices in the family are identical except for magnetic switchpoint levels.

The small geometries of the BiCMOS process allow these devices to be provided in ultrasmall packages. The package styles available provide magnetically optimized solutions for most applications. Package LH is an SOT23W, a miniature low-profile surface-mount package, while package UA is a three-lead ultramini SIP for through-hole mounting. Each package is lead (Pb) free, with 100% matte tin plated leadframes.

Features and Benefits

• Continuous-time operation
    • Fast power-on time
    • Low noise
• Stable operation over full operating temperature range
• Reverse battery protection
• Solid-state reliability
• Factory-programmed at end-of-line for optimum performance
• Robust EMC performance
• High ESD rating
• Regulator stability without a bypass capacitor

Description

Images new bi-directional Bi-Flex Bend Sensor is a unique component that changes resistance when bent. An un-flexed sensor has a nominal resistance of 10000 ohms (10k). As the flex sensor is bent in either direction the resistance gradually decreases. Sensor is also pressure sensitive, and may be used as a force or Pressure sensor. The flex sensor operating temperature is -45F to 125F.

The sensor measures 3/8 inch wide, 4 1/2 inches long and only 0.038 inches thick.

Some application for the Flex Sensor are:

1) Collision detection on mobile robots.
2) VR Gloves and VR suits.
3)Physices applications and experiments.

Available in three resistance ranges:

1) FLEX-01-L Low resistance range , nominal resistance between 1K - 20k
2) FLEX-01-M Medium resistance range , nominal resistance between 20K - 50k
3)  FLEX-01-H High resistance range , nominal resistance between 50K - 200k.

40KHz Ultrasonic Transducer Transmitter and Receiver Pair. These transducers are very useful in making various sensors for detecting obstacles and measuring distances.


TSOP1738 Features

• Use for motion or distance sensing
• Frequency: 40kHz ±1.0kHz
• Aluminum case
• Capacitance: 2000pF ±20%
• Transmitter: bandwidth 5.0kHz/100dB, sound pressure level 112dB/40 ±1.0kHz
• Receiver: bandwidth 5.0kHz @ -75dB, min. sensitivity 67dB/40 ±1.0kHz (0dB vs. 1V µbar) R=3.9k.

"ECHO" Ultrasonic Distance Sensor with ASCII serial O/P is an amazing product that provides very short  to long-range detection and ranging. The sensor provides precise, Stable non-contact distance measurements from about 2cm to 4 meters with very high accuracy. Its compact size, higher range and easy usability make it a handy sensor for distance measurement and mapping. The board can easily be interfaced to microcontrollers RX pin ( USART)  . At every 50ms sensor transmits an ultrasonic burst and send out ASCII value of distance that corresponds to the time required for the burst echo to return to the sensor. This sensor is perfect for any number of applications that require you to perform measurements between moving or stationary objects. Naturally, robotics applications are very popular but you'll also find this product to be useful in security systems or as an infrared replacement if so desired. Since it is very stable ,the "ECHO" Ultrasonic sensor module can be used for Micromouse application instead of IR sensor.

"ECHO" Ultrasonic Distance Sensor Features

• Professional EMI/RFI Complaint PCB Layout Design for Noise Reduction
• Range: 2 cm to 4 m 
• Accurate and Stable range data
• Data loss in Error zone eliminated
• Modulation at 40 KHz
• Mounting holes provided on the circuit board
• Automatically Triggered at every 50 ms
• 5V DC Supply voltage
• Current - <20mA
• ASCII output format
• On Board Burst LED Indicator shows measurement in progress
• 3-pin header makes it easy to connect using a servo extension cable, no soldering required

The LM35 series are precision integrated-circuit temperature sensors, whose output voltage is linearly proportional to the Celsius (Centigrade) temperature. The LM35 thus has an advantage over linear temperature sensors calibrated in ° Kelvin, as the user is not required to subtract a large constant voltage from its output to obtain convenient Centigrade scaling. The LM35 does not require any external calibration or trimming to provide typical accuracies of ±1/4 °C at room temperature and ±3/4°C over a full -55 to +150°C temperature range. Low cost is assured by trimming and calibration at the wafer level. The LM35'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 60 mA from its supply, it has very low self-heating, less than 0.1°C in still air.

Features

• Calibrated directly in ° Celsius (Centigrade)
• Linear a 10.0 mV/°C scale factor
• 0.5°C accuracy guaranteeable (at a25°C)
• Rated for full b55° to a150°C range
• Suitable for remote applications
• Low cost due to wafer-level trimming
• Operates from 4 to 30 volts
• Less than 60 mA current drain
• Low self-heating, 0.08°C in still air
• Nonlinearity only g(/4°C typical
• Low impedance output, 0.1 X for 1 mA load

This is a pyrolectric sensor (PIR) module which developed for human body detection. A PIR detector combined with a fresnel lens are mounted on a compact size PCB together with an analog IC, SB0061, and limited components to form the module. It detect the motion by detecting the changes in the IR levels emitted from the object.

It can be used as motion detector for security systems or robotics. It works from 3.3V to 5V DC and gives TTL output which can be directly given to microcontroller or to relay through a transistor

PIR Motion Detector Module Features

• Detection range: 2-3 meters
• Settling time: 60 seconds
• Compact size (24 x 32 mm)
• Supply Voltage: DC3V-5V
• Current drain :< 50uA
• Voltage Output: High/Low level signal: 0-3.3V
• High sensitivity
• Delay time: 5s-18 minute(as customer requirement)
• Operation Temperature: -15oC -70 oC
• Infrared sensor: dual element, low noise, high sensitivity
• Light sensor: CdS photocell (can be add as customer requirement

Use this 5 mm IR Transmitter and Receiver pair to build object sensors, color sensors, line sensors, distance sensors, etc. Both the transmitter and Receiver are built to work on the 940 nm wavelength.
Note: The transparent LED is transmitter while the dark blue one is the receiver.

HR201 is a new kind of humidity-sensitive resistor made from organic macromolecule materials, it can be used in occasions like: hospitals, storage, workshop, textile industry, tobaccos, pharmaceutical field, meteorology, etc.

Features:

Excellent linearity, low power consumption, wide measurement range, quick response, anti-pollution, high stability, high performance-price ratio.

Introduction

GP2D12 is an Infrared distance measuring sensor unit capable of measuring distance from 10 to 80cm.
It is composed of an integrated combination of PSD (position sensitive detector), IRED (infrared emitting diode) and signal processing circuit. The variety of the reflectivity of the object, the environmental temperature and the operating duration are not influenced easily to the distance detection because of adopting the triangulation method.

Specifications

• Distance measuring range: 10 to 80cm
• Analog output type
• Refresh rate: 36ms
• Supply voltage: 4.5 to 5.5 V
• Average current consumption: 33 mA
• Package size: 29.5×13×21.6mm
  
  

MOC7811 is a slotted Opto isolator module, with an IR transmitter & a photodiode mounted on it. Performs Non-Contact Object Sensing. This is normally used as positional sensor switch (limit switch) or as Position Encoder sensors used to find position of the wheel. It consists of IR LED and Photodiode mounted facing each other enclosed in plastic body.

Specifications

• Size: Refer to the image below
• Mounting hole diameter: 3mm
• Mounting hole spacing: 19mm
• Slot width: 3mm
• Slot depth: 7mm
  

Applications

• DC motor position / velocity control
• Position and velocity servomechanisms
• Factory automation robots
• Numerically controlled machinery
• Computer printers and plotters