MQ-7B CO Gas Sensor

Gas sensor to detect carbon monoxide gas

Specifications:
- Power supply heater: 5V AC / DC
- Circuit power supply: 5VDC
- Measurement range: 20 - 2000ppm
- Able to measure carbon monoxide gas
- Output: analog (voltage change) with additional Rload

datasheet http: // zipansion • com / 6pcU

TGS2603 Air Quality / Odor sensor

TGS2603 is a gas sensor which is suitable for application in the automotive, appliance air controller, and a smart home. This tool can detect gas contamination trimethylamine, methyl mercaptan and gases - other gases to the air we breathe.

specifications:

- Target gas: Trimethylamine, methyl mercaptan, and others - others

- The detection range: 1 - 10ppm EtOH

- The principle of sensing: MOS Type

- Heating Voltage: 5 V

- Circuit voltage: 5 V

- Power consumption: 20 mW

- Dimensions: 9.2 × 7.8mm

- Weight: 1 gr

- Features: Low power consumption, sensitivity tinngi against sulfur gas, using a simple electric circuit

MiCS-2714 NO2 MOS gas sensor

MICS 2714 this is a sensitive sensor to detect the levels of Nitrogen Dioxide (NO2) and hydrogen (H2).

With SMD packaging shapes, make us easy to use in projects that require small size.

This sensor can also be used to detect gas leaks.

Features:

- Size: 5 x 7 x 1.55 (mm).

- Suitable for the neighborhood / area factories / industries.

TGS832-A00 Halocarbons gas sensor by Figaro

TGS832-A00 Halocarbons gas sensor by Figaro

Features

* High sensitivity to refrigerant gases
* Quick response
* Long term stability
* Uses simple electrical circuit

Application examples

* Portable and fixed installation refrigerant leak detectors

Specifications

Target gases	Halocarbon gas
Typical detection range	10 - 1,000ppm
Sensing principle	MOS type Precautions for use
Driving voltage	Heater Voltage：5.0V Circuit Voltage：Max24V
Power consumption	835mW
Dimensions	φ17×10mm
Weight	Approx. 2.4g

HS-131 low cost nature gas sensor

HS-131 low cost nature gas sensor

High sensitive and good selectivity to fume and alcohol.
Long life and reliable stability.

HS-133 low cost Liquid Petroleum Gas sensor

HS-133 low cost Liquid Petroleum Gas sensor

High sensitive and good selectivity to fume and alcohol. 
Long life and reliable stability.

HS-134 low cost Carbon monoxcide sensor

HS-134 low cost Carbon monoxcide sensor 

High sensitive and good selectivity to low carbon monoxide concentration.
Long life and reliable stability.

M201 Air Quality Module

M201 adopts semi-conductor gas sensor and high performance MPU. It has Uart and I2C digital output and open set switch output. The module is applied to the development of the equipment for air quality detecting and controlling.

Application:

Air purifier, air pollution monitor, automatic vent device

Specification:

• Target gas :Hydrogen
• Detection range :20-150ppm
• Sensor type :Semi-conductor
• Response time :< 30s
• Recovery time :< 50s
• Working voltage :2.8-5.0V
• Working current :< 120 mA
• Output :Uart: Baud Rate 4800,n,8,1
• Product Capability  :<15 li="" ppm="">
• Precision :+/-15%(80ppm)
• Expected lifespan :>2 years
• Working condition :Temperature:0-55 C
• Humidity:20%-90%RH
• Storage condition :Temperature:-20-70 C
• Humidity:20%-90%RH
• External dimensions :25X24X18mm(LXWXH)

Low Cost Electronic modules Gas Sensor

There are several low cost Electronic modules for gas Sensor:

• Low Cost Carbon Monooxide sensor module
• Low Cost CO2 sensor module
• Low Cost Alcohol sensor module
• Low Cost methane gas sensor module
• Low Cost LPG sensor module
• Low Cost Air Quality Sensor module

more Sensor , Gas sensor,  and Electronic Modules

MG811 Carbon Dioxide Sensor

MG811 Carbon Dioxide Sensor

Features:

• Good sensitivity and selectivity to CO2
• Low humidity and temperature dependency
• Long stability and reproducibility

Application: 

• Air Quality Control 
• Ferment Process Control 
• Room temperature CO2 concentration detection

Technical Parameters:

Symbol	Parameter Name	Technical	Remarks
VH	Heating Voltage	6.0±0.1 V	AC    or    DC
RH	Heating Resistor	30.0±5% Ω	Room Temperature
IH	Heating Current	200mA
PH	Heating Power	1200mW
Tao	Operating	-20—50℃
Tas	Temperature	-20—70℃
∆ E  M F	Storage Temperature	30—50mV	350—10000ppmCO2

MQ-9 Semiconductor Sensor for CO/Combustible Gas.

MQ-9 Semiconductor Sensor for CO/Combustible Gas

Sensitive material of MQ-9 gas sensor is SnO2, which with lower conductivity in clean air. It make detection by method of cycle high and low temperature, and detect CO when low temperature (heated by 1.5V). The sensor’s conductivity is more higher along with the gas concentration rising. When high temperature (heated by 5.0V), it detects Methane, Propane etc combustible gas and cleans the other gases adsorbed under low temperature. Please use simple electrocircuit, Convert change of conductivity to correspond output signal of gas concentration.

MQ-9 gas sensor has high sensitity to Carbon Monoxide, Methane and LPG. The sensor could be used to detect different gases contains CO and combustible gases, it is with low cost and suitable for different application.

Character:

• Good sensitivity to CO/Combustible gas
• High sensitivity to Methane, Propane and CO
• Long life and low cost
• Simple drive circuit

Application:

• Domestic gas leakage detector
• Industrial gas detector
• Portable gas detector

Model No.			MQ-9
Sensor Type			Semiconductor
Standard Encapsulation			Bakelite
Detection Gas			CO and combustible gas
Concentration			10-1000ppm CO 100-10000ppm combustible gas
Circuit	Loop Voltage	Vc	≤10V DC
	Heater Voltage	VH	5.0V±0.2V AcorDC(High) 1.5V±0.1V ACorDC(Low)
	Heater Time	TL	60±1S(High)90±1S(Low)
	Load Resistance	RL	Adjustable
Character	Heater Resistance	RH	31Ω±3Ω(Room Tem.)
	Heater consumption	PH	≤350mW
	Sensing Resistance	Rs	2KΩ-20KΩ(in 100ppm CO)
	Sensitivity	S	Rs(in air)/Rs(100ppm CO)≥5
	Slope	α	≤0.6(R300ppm/R100ppm CO)
Condition	Tem. Humidity		20℃±2℃; 65%±5%RH
	Standard test circuit		Vc:5.0V±0.1V;             VH(High): 5.0V±0.1V；             VH(Low): 1.5V±0.1V
	Preheat time		Over 48 hours

MQ-8 hydrogen gas sensor semiconductors.

MQ-8 hydrogen gas sensor semiconductors.

Sensitive material MQ-8 gas sensor is used in clean air low conductivity tin oxide (SnO2).When the sensor is exposed in the presence of hydrogen, conductivity sensor with increasing concentration of combustible gases in air increases. Using a simple circuit to convert the change in conductivity of the gas concentration corresponding to the output signal. 

MQ-8 hydrogen gas sensor of high sensitivity, the monitoring of the other hydrogen-containing gas is also very satisfactory. This sensor can detect a wide range of hydrogen gas, city gas in particular, is a low-cost sensor for a variety of applications.

Feature 

• In a wide range of concentrations with good sensitivity to hydrogen 
• Long-life, low cost 
• Simple drive circuit can be

Technical indicators

Model			MQ-8
Product Type			Semiconductor gas sensor
Standard package			Bakelite (black bakelite)
Detection of gas			Hydrogen
Detectable concentration			100-1000ppm (hydrogen)
Standard circuit conditions	Circuit voltage	V c	≤ 24V DC
	Heating voltage	V H	5.0V ± 0.2V ACorDC
	Load Resistance	R L	Adjustable
Under standard test conditions sensing Characteristics	Heating resistor	R H	31Ω ± 3Ω (room temperature)
	Heating consumption	P H	≤ 900mW
	Sensing Resistance	R s	2KΩ-20KΩ (in 1000ppm H 2)
	Sensitivity	S	Rs (in air) / Rs (1000ppm hydrogen) ≥ 5
	Concentration gradient	α	≤ 0.6 (R 5000ppm / R3000ppm CH 4)
Standard Test Conditions	Temperature, humidity		20 ℃ ± 2 ℃; 65% ± 5% RH
	Standard Test Circuit		Vc: 5.0V ± 0.1V; V H: 5.0V ± 0.1V
	Warm-up time		Less than 48 hours

MQ-2 Semiconductor Gas Sensor

MQ-2 Semiconductor Gas Sensor

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:

• 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 Parameters:

Model No.			MQ-2
Sensor Type			Semiconductor
Standard Encapsulation			Bakelite (Black Bakelite)
Detection Gas			Combustible gas and smoke
Concentration			300-10000ppm ( Combustible gas)
Circuit	Loop Voltage	Vc	≤24V  DC
	Heater Voltage	VH	5.0V±0.2V ACorDC
	Load Resistance	RL	Adjustable
Character	Heater Resistance	RH	31Ω±3Ω（Room Tem.）
	Heater consumption	PH	≤900mW
	Sensing Resistance	Rs	2KΩ-20KΩ(in 2000ppm C3H8 )
	Sensitivity	S	Rs(in air)/Rs(1000ppm isobutane)≥5
	Slope	α	≤0.6(R5000ppm/R3000ppm CH4)
Condition	Tem.  Humidity		20℃±2℃；65%±5%RH
	Standard test circuit		Vc:5.0V±0.1V；           VH: 5.0V±0.1V
	Preheat time		Over 48 hours

MQ135 Semiconductor Sensor for Air Quality.

Sensitive material of MQ135 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.

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
• Simple drive circuit

Application:

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

Technical Paremeters:

Model No.			MQ135
Sensor Type			Semiconductor
Standard Encapsulation			Bakelite (Black Bakelite)
Detection Gas			Ammonia, Sulfide, Benze steam
Concentration			10-10000ppm (Ammonia, Benze, Hydrogen)
Circuit	Loop Voltage	Vc	≤24V  DC
	Heater Voltage	VH	5.0V±0.2V AC or DC
	Load Resistance	RL	Adjustable
Character	Heater Resistance	RH	31Ω±3Ω(Room Tem.)
	Heater consumption	PH	≤900mW
	Sensing Resistance	Rs	2KΩ-20KΩ(in 100ppm NH3 )
	Sensitivity	S	Rs(in air)/Rs(100ppm NH3)≥5
	Slope	α	≤0.6(R100ppm/R50ppm NH3)
Condition	Tem.  Humidity		20℃±2℃；65%±5%RH
	Standard test circuit		Vc:5.0V±0.1V；                    VH: 5.0V±0.1V
	Preheat time		Over 48 hours

Figaro TGS3830 Industrial safety

Figaro TGS3830 Industrial safety

Features:
* Low power consumption
* High sensitivity to R-134a
* Quick response to R-134a

Application example: 
Portable refrigerant leak detector







Specifications:

Target gases	Halocarbon gas
Typical detection range	5-100ppm
Sensing principle	MOS type Precautions for use
Driving voltages	Heater Voltage：0.8V±3% Circuit Voltage：5.0V
Power consumption	approx. 100mW
Dimensions	φ9.2×8.5mm
Weight	Approx. 1.1g

Gas Sensor Sampler Kit

Gas Sensor Sampler Kit is a collection of some of the gas sensor module that can be used with Parallax microcontrollers. Gas Sensor Sampler kit is suitable for gas identification, monitoring gas levels, and other applications associated with the gas. 

specifications: 

- 1pcs CO Gas Sensor Module (MQ-7) 

- 1pcs CO2 Gas Sensor Module (MG-811) 

- 2pcs LPG Gas Sensor Module (MQ-5) 

- Bonus 4 pcs of screw drives

Lutron DO-5510 DISSOLVED OXYGEN METER with RS-232 interface

Lutron DO-5510 DISSOLVED OXYGEN METER with RS-232 interface

Technical Specs:
* Model : DO-5510
* -P circuit, LCD with display unit.
* Dissolved oxygen range : 0 to 20 mg/L.
* Max., Min., Memory recall button.
* DO, Oxygen in air, Temp., ATC, Auto Cal., % salt.
* Diaphragms & electrolyte included.
* Probe head with diaphragm set and electrolyte are included.
* Size : 180 x 72 x 32 mm. RS-232.

Lutron DO-5509 pocket size DISSOLVED OXYGEN METER

Lutron DO-5509 pocket size DISSOLVED OXYGEN METER

Technical Specs:
* Model : DO-5509 
* Range : 0 to 20 mg/L.
* ATC. Resolution : 0.1 mg/L.
* Pocket size, 13 mm LCD.
* Size : 131 x 70 x 25 mm.

Vernier Dissolved Oxygen Probe

Use the Dissolved Oxygen Probe to determine the concentration of oxygen in aqueous solutions in the field or in the laboratory.

The Dissolved Oxygen Probe is great for biology, chemistry, ecology, or integrated science courses. It can be used to perform a wide variety of experiments to determine changes in dissolved oxygen levels, one of the primary indicators of the quality of an aquatic environment.

Built-in temperature compensation lets you calibrate in the lab, then make measurements outdoors without having to recalibrate.

Disposable caps with pre-fit membranes allow you to quickly and conveniently change membranes.

Calibrate in the units you choose: % dissolved oxygen, mg/L, or ppm dissolved oxygen

Specifications

• Range: 0 to 15 mg/L (or ppm)
• Accuracy: ±0.2 mg/L
• Response Time: 95% of final reading in 30 seconds, 98% in 45 seconds
• Resolution: 0.014 mg/L (LabQuest 2, LabQuest, LabQuest Mini, Go!Link, LabPro)
• Temperature Compensation: automatic from 5–35°C
• Pressure Compensation: manual
• Salinity Compensation: manual
• Minimum sample flow: 20 cm/second

What’s Included

• Vernier Dissolved Oxygen Probe (dissolved oxygen electrode with membrane cap)
• One replacement membrane cap
• Sodium Sulfite Calibration Standard (2.0 M Na2SO3) and MSDS sheet
• D.O. Electrode Filling Solution, MSDS sheet, and filling pipet
• Calibration bottle (empty, lid with hole)
• D.O. Polishing Strips (1 pkg)
• User Manual

Sensor Requirements

The Dissolved Oxygen Probe requires a compatible interface and software to collect data. Interface and software sold separately

Compatible Interfaces

The Dissolved Oxygen Probe is compatible with these interfaces:

• LabQuest 2
• LabQuest
• LabQuest Mini
• Go!Link
• SensorDAQ
• NXT Sensor Adapter
• LabPro
• Vernier EasyLink
• CBL 2
• TI-Nspire Lab Cradle

SG-2008G smoke or LPG sensor

SG-2008G smoke or LPG sensor

Gas sensor module to detect smoke or LPG

specifications:
- Power supply: 12 VDC
- Detects smoke or LPG
- Have a sound as the alarm noise> 85db
- Integrated internal relay configuration with NO / NC
- The installation of the sensor module can be placed on the ceiling or wall