SERIES 2000 GAS SENSORS

 

FEATURES

  • Low cost

  • Shock proof

  • Quick response

  • High sensitivity

  • Large output signal

  • Low power consumption

  • High resistance to poisoning

  • Good reliability and long life  


PRODUCT LIST

Application

Model

Target gas/ detection range

Features

Combustible gas detection

TGS 2610

General combustible gases

(500 ~ 10,000 ppm)

·       For wide range of gases

 

TGS 2611

Methane, Natural gas

(500 ~ 10,000 ppm)

·       Low sensitivity to interfering gases

TGS 2612

LPG & LNG

(500 ~ 10,000 ppm)

·       Miniature size

·       Low -power consumption

TGS 2613

Hydrogen

(50  ~ 1,000 ppm)

·       High selectivity and sensitivity to hydrogen

Toxic gas detection

TGS 2640

TGS 2440

Carbon monoxide

(30 ~ 1,000 ppm)

·       High sensitivity and selectivity to CO2

·       Microprocessor and hybrid IC available

TGS 2641

Combustion exhaust

·       Sensitive to CO & H2

TGS 2642

Ammonia

(30 ~ 300 ppm)

·       High sensitivity to ammonia

TGS 2643

Hydrogen sulfide

(5 ~ 100 ppm)

·       High sensitivity to H2S

Solvent vapour detection

TGS2620

Alcohol, toluene, xylene, etc.

50 ~ 5,000 ppm

·       High sensitivity to alcohol and organic solvents

Air quality control

TGS 2100

TGS 2400

TGS 2600

General air contamination

1 ~ 10 ppm

·       High sensitive detection of contaminants in air with microprocessors

·       Pre-calibrated sensor modules available

TGS 2101

TGS 2601

Cigarette smoke

1~10 ppm.

Cooking control

TGS 2181

TGS 2281

Fumes from food, odor

Alcohol (10~1,000 ppm)

Water vapour (1~150g/m3)

·       Total gas and alcohol gas  detection in cooking process

TGS 2180

Water vapor from food

·       High sensitivity to water vapor in cooking process

Automobile

TGS 2104

TGS 2201

Gasoline exhaust

Diesel exhaust

·       For automatic ventilation control in  automobile

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GAS DETECTION MECHANISM

When sensor is heated to a high temperature, e.g.. 400°C, without the presence of oxygen, free electrons flow easily through the grain boundaries of the tin dioxide (SnO2-X) particles. In clear air, oxygen, which traps free electrons by its electron affinity, is adsorbed on to the tin dioxide particle surface forming a potential barrier in the grain boundaries. This potential barrier (eVs in air) restricts the flow of electrons, causing the electric resistance to increase (Fig. 1-1).                                    

When the sensor is exposed to an atmosphere containing reducing gases, e.g. combustible gases, CO, etc, the tin dioxide surface adsorbs these gas molecules and causes oxidation (Fig. 1-2). This lowers the potential barrier, allowing electrons to flow more easily, thereby reducing the electrical resistance (Fig. 1-3). Reaction between gases and surface oxygen will vary depending upon the sensor element's temperature and the activity of sensor materials.

APPLICATIONS

CATEGORY

DOMESTIC FIELD

COMMERCIAL/ INDUSTRIAL FIELDS

Combustible gases

- Methane

- Propane

- Hydrogen

- Others

·        Gas alarms for homes, recreational vehicles, boats

·        Gas detection systems for commercial buildings, industrial plants, onshore and offshore gas and oil platforms, petrochemicals

·        Portable gas detectors

Toxic gases

-Carbon monoxide

-Ammonia

-Hydrogen

  sulfide    

·        CO detectors for homes, recreational for homes, recreational vehicles, boats, combustion appliances

·        Fire alarms

  • CO monitoring systems for car parks

  • Fire detection systems

  • Ammonia leak detection in refrigerators

  • Ammonia detection for agricultural field

  • Gas detection systems in industrial plants

  • Portable detectors

Alcohol

·        Breath alcohol checkers

·        Breath alcohol checkers for professionals

Solvent vapor

 

·        Solvent detection for factories, dry cleaning industry and semiconductor industry.

Halcarbon gases

(CFCs, HCFCs, etc)

 

·        Halocarbon detection for refrigerators, air conditioners, cleaning processes for electrical components, etc

Odor detection

- Sulfide

- Amine

·        Mouth odour checkers

·        Odor detection in refrigerators

·        Odour monitors for dentists

·        Odour measuring systems for the food industry

Others - Oxygen

            -CO2                -Humidity

·        Oxygen monitors

·        Air quality control

·        Air conditioner

·        Oxygen detectors

·        Carbon dioxide monitor

·        Office air conditioning

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For further information please Email us at: sales@tashika.co.jp