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LPM2610 - Pre-calibrated LP module
NGM2611- Pre-calibrated methane module
Figaro offers pre-calibrated gas sensor modules for residential applications using either TGS2610 (for LP gas) or TGS2611 (for methane gas) as described above. This module is calibrated in Figaro’s humidity and temperature controlled facility and includes a precisely adjusted load resistor and a temperature compensation circuit. By simply inserting this module into the mother board of a gas detector, a reliable alarm setting can be achieved while eliminating the costly gas calibration process.
* meets RoHS requirements
* maintenance free
* alarm threshold of 5~20% LEL
* meets UL1484, EN50194
* compact size (27mm x 12.5mm, 2.5g)
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Figaro has two semiconductor type air quality sensors. TGS2600 has high sensitivity to various gaseous air contaminents such as the gases found in cigarette smoke, while TGS2602 shows good sensitivity to volatile organic compounds (VOCs) and odorous gases (such as H2S). By combining these sensors with signal processing, the TGS260x series can be interfaced with ventilation and air conditioning systems to protect the air that you breathe.
TGS2600 - Gas sensor for general air contaminants
This sensor has high sensitivity to various gaseous air contaminents such as those found in cigarette smoke. It is ideally suited for the detection of the gases found in cigarette smoke and for usage in devices such as air purifiers and air conditioning systems. Compared with competing MOS sensors, TGS2600 has a longer useful life and is less costly.
TGS2602 - VOC sensor
With ultra high sensitivity to volatile organic compounds and odorous gases which can be noxious as well as presenting a variety of health hazards, TGS2602 is designed for usage in VOC monitors as well as devices for automating ventilation and air conditioning. Compared to photo ionization sensors, TGS2602 delivers higher sensitivity with longer life and lower cost.
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The sensing element is comprised of a metal oxide semiconductor layer formed on an alumina substrate of a sensing chip together with an integrated heater.
In the presence of a detectable gas, the sensor's conductivity increases depending on the gas concentration in the air. A simple electrical circuit can convert the change in conductivity to an output signal which corresponds to the gas concentration.
The TGS 2620 has high sensitivity to the vapors of organic solvents as well as other volatile vapors. It also has sensitivity to a variety of combustible gases such as carbon monoxide, making it a good general purpose sensor.
Due to miniaturization of the sensing chip, TGS 2620 requires a heater current of only 42mA and the device is housed in a standard TO-5 package.
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The sensing element of TGS826 is a metal oxide semiconductor which has low conductivity in clean air. In the presence of a detectable gas, the sensor's conductivity increases depending on the gas concentration in the air. A simple electrical circuit can convert the change in conductivity to an output signal which corresponds to the gas concentration.
The TGS826 has high sensitivity to ammonia gas. The sensor can detect concentrations as low as 30ppm in the air and is ideally suited to critical safety-related applications such as the detection of ammonia leaks in refrigeration systems and ammonia detection in the agricultural field.
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Features:
- Detection range of <25 to 10,000 ppm ammonia (NH3).
- High selectivity to ammonia.
- Minimal response to changing environmental humidity.
- Response is unaffected by prolonged exposures to, or high concentrations of ammonia.
- Sensor response is not affected by H2S.
Circuitry
A transducer is available from Synkera to operate the sensor. This circuit,
packaged on a 2" x 1.5" printed circuit board, is powered with 9 - 24 VDC. The transducer provides a 0 - 5 VDC output which can be adjusted for sensor offset and gain. The heater voltage is also adjustable. The circuit is set to the
recommended values at the factory.
Basic Measuring Circuit
The sensor can be operated using a simple voltage divider. This requires two voltage supplies: heater voltage (VH) and circuit voltage (VC). VH is applied to the heater in order to maintain a constant, elevated temperature, for optimum sensing.
VC is applied to allow a measurement of the output voltage (Vout) across a load resistor (RL).
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TGS 3870 is Figaro's new metal oxide semiconductor gas sensor for the detection of both methane and carbon monoxide. Using a micro-bead gas sensing structure, both methane and carbon monoxide can be detected with a single sensor element by periodic application of two different heater voltages (high and low). Miniaturization of the gas sensing bead results in a heater power consumption of only 38mW (average).
TGS 3870 has low sensitivity to alcohol vapors (a typical interference gas in the residential environment) and has high durability, making the sensor ideal for consumer market gas alarms.
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TGS2610 - LP gas sensor
TGS2610 has been widely used for more than 10 years for LP gas detection in residential and industrial gas detectors. Unlike catalytic type sensors, TGS2610 is also suitable for portable leak detectors due to its high sensitivity to very low concentrations of LP gas and its low power requirements. In addition, the sensor also has wide application in recreational vehicle and marine applications where durability against severe environmental conditions is required.
TGS2611 - Methane gas sensor
TGS2611 has established itself in the methane detection marketplace for more than 10 years. With superior durability against poisons and interferent gases when compared to competing pellistor type sensors, this sensor has found wide application in gas detectors for residential and industrial usage, portable leak detectors, as well as in natural gas vehicles where severe environmental conditions are encountered.
* UL recognized component
* compact size (TO-5 can)
* long life
* pre-sorted for easy calibration
* meets RoHS requirements
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SENSOR FEATURES:
- High sensitivity to a wide range of flammable gases.
- Non-specific response, calibration factors available
upon request.
- Typical response time <1 minute to 90% full scale.
- Environmental temperature range of - 20 to 50°C.
- Minimal response to environmental humidity over
the range of 0 - 95%, non-condensing
- Rugged, reliable sensor based on Synkera's exclusive
technology.
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The sensing element of Figaro gas sensors is a tin dioxide (SnO2) semiconductor which has low conductivity in clean air. In the presence of a detectable gas, the sensor's conductivity increases depending on the gas concentration in the air. A simple electrical circuit can convert the change in conductivity to an output signal which corresponds to the gas concentration.
The TGS 832 has high sensitivity to R-134a, the most promising alternative to R-12, commonly used in air conditioning systems and refrigerators. R-12 and R-22 are also detectable by TGS 832. With its good long term stability, TGS 832 is an excellent, low-cost sensor for CFC detection.
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TGS821 Semiconductor type
Figaro semiconductor type sensor TGS821 has high sensitivity to low concentrations of hydrogen. Even at 100ppm of hydrogen, the sensor can detect the target gas with good repeatability and long term stability. Figaro's unique sensor technology makes this sensor highly selective to hydrogen. TGS821 utilizes a durable ceramic housing that makes it ideal for industrial applications which involve transformer maintenance or usage of batteries. This sensor is also appropriate for checking gas leakage within a fuel cell system.
TGS6812 Catalytic type
Figaro's catalytic type sensor TGS6812 can detect levels of hydrogen up to 100%LEL. This sensor features high accuracy, good durability and stability, quick response, and linear output. This sensor can detect not only hydrogen but also methane and LP gas, making it an excellent solution for monitoring gas leakage from stationary fuel cell systems which use hydrogen that is transformed by combustible gases. Due to an adsorbent inside its sensor cap, the cross sensitivity of TGS6812 to alcohol is much smaller than can be found in traditional catalytic type sensors. In addition, TGS6812 is more durable against silicone compounds than the traditional catalytic type sensors.
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SENSOR FEATURES:
- High selectivity to hydrogen
- Low power operation LEL hydrogen
detection (1000 ppm - 2%)
- Can be operated at room temperature (no
heater power consumption)
- Can be used for ppm hydrogen detection
(50 - 1000 ppm) at higher operating
temperature and power (150°C/275 mW)
- Environmental humidity range of 0 -
90%, non-condensing
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SENSOR FEATURES:
- Sensor designed to reliably detect H2S
at concentrations from 1-100 ppm.
- Rugged sensor undamaged by exposure
to temperature and humidity extremes.
- Fast response and complete recovery
after H2S exposure.
- Large, stable, easy to measure
resistance change on exposure to H2S.
- Preliminary studies indicate sensor
response is stable (does not go to sleep).
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Sensor Features
- Reliable solid state metal oxide technology
- Rugged, long lasting sensor
- Large dynamic range
- Tolerates a wide range of temperature,
pressure and humidity levels
- Low cost
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Figaro Engineering Inc. specializes in the research, development, manufacturing and marketing company of gas sensors and gas detection equipment.
In 1968, Figaro Engineering Inc. became the first company in the world to develop and commercialize semiconductor gas sensors. Globally, major concerns in the fields of gas detection, air quality control, HVAC appliances, and the automotive industry have relied on Figaro Engineering Inc. for gas sensing products.
Based on its extensive and broad-based experience in developing and manufacturing gas sensors, Figaro continues to expand its expertise into new areas of gas detection.
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LM94022Q is AEC-Q100 Grade 0 qualified and is manufactured on an Automotive Grade Flow.
•Low 1.5V operation
•Push-pull output with 50µA source current capability
•Four selectable gains
•Very accurate over wide temperature range of −50°C to +150°C
•Low quiescent current
•Output is short-circuit protected
•Extremely small SC70 package
•Footprint compatible with the industry-standard LM20 temperature sensor
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The XC31B series are ultra small CMOS temperature sensor ICs. As a bandgap type temperature sensor is built-into the
XC31B, linearity, in comparison to thermistor type temperature sensors, is much better.
The operating temperature range of the series is from -30°c to +80°c.
The XC31B comes in a mini molded SOT-25 and
USP-6B packages with a supply current of only 7µA
(@VOUT=2.0V) and as such, is suitable for use with various portable devices. Output voltage is selectable in 100mV
increments within a range of 2.0V to 6.0V (at 25°c).
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The voltage detectors are the ICs that always watch over the input voltage and detect when the input voltage drops below the set detect value. In addition, they work to protect the battery by alarming and watching if the input voltage comes from rechargeable battery.
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