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Alphasense Pellistors are available in three housing sizes: A, D and the new F size for fixed installation applications. The innovative design of the Alphasense Pellistor range provides high quality, low power (only 190mW) and excellent poison resistance.
As with all other Alphasense sensors, computer controlled stabilisation racks to continuously monitor every sensor during initial conditioning ensures that only sensors operating within specification are allowed to be tested with our ATAV (Alphasense Test and Validation) system. Performance of very sensor is traceable via bar coding.
CH-A3 is a drop-in 20mm diameter replacement to existing products with improved stability and poison resistance;
CH-D3 is a unique miniature size - 11.5mm height, 15mm diameter, complementing the existing and fast-growing Alphasense D sensor family - with the same good stability and high poison resistance of the CH-A3.
All pellistors are housed in certified flameproof chambers.
Alphasense Pellistors include a matched pair of sensing and compensator pellistor beads, sealed in a 316 stainless steel housing with stainless steel flame arrester sinter.
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Features
- Extra Strong Support Post
- Large Active Bead Surface Area
- Precious Metals Used for All Components Mounted in Teflon Body
- Active and Reference Beads Matched by Size and Resistance
- Teflon Barrier Protects Active and Reference Beads
- Ultra Poison Resistant Active Bead
- Glass Coated Reference Bead
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With a PID the sample gas is exposed to deep ultraviolet light from a lamp. The emitted light ionises targeted gases in the sample so they can be detected by the gas detector and reported as a concentration (ppb or ppm).
The Alphasense PID can be installed in portable and stationary gas monitors that accept either Alphasense Ltd CH-A3 or other manufactures compatible pellistor cells. Thus providing complete PID capability in a package that has the same dimensional and electrical profile as Pellistors (providing the electronics input circuit is designed to take the sensor’s output range). This opens up an incredible variety of environmental and safety applications in industrial, commercial and residential markets.
The Alphasense PID sensor is offered in two models. They are virtually insensitive to humidity changes, providing unparalleled performance in a variety of applications.
PID-A1 has a linear dynamic range of 100-ppb to 6,000-ppm (Isobutylene).
PID-AH has a linear dynamic range of 5-ppb to 50-ppm (Isobutylene).
The Sensors include a Detector with 10.6eV Lamp, Lamp Driver, Amplifier Circuitry, Removable Electrode Stack & Particulate Filter.
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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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Catalytic DrägerSensors
Catalytic DrägerSensors for the detection of flammable gases and vapors utilise Pellistors which are based on the catalytic effect. Different sensor versions will suit even the most demanding industrial applications.
The DrägerSensor Ex PR M (PR = poison resistant) contains pellistors, which in the presence of catalytic poisons have a longer lifetime than conventional sensors.
The DrägerSensor Ex HT M contains also PR-pellistors, but additionally is approved to be used at temperatures up to 150 °C.
The DrägerSensor Ex LC M contains PR-pellistors, which by their special encapsulation and electronic amplification are suitable to monitor very low gas concentrations. The measuring range is 0...10% LEL.
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TGS6810, which can detect both methane and LP gas, has been developed for residential gas detection. Combining Figaro’s 35+ years of experience in catalyst material technology with its advanced micro fabrication technology, Figaro can produce the most advanced compact pellistor sensors whose durability, stability, quick response, and linear output make them ideal for detecting many combustible gases. As the sensor possesses an adsorbent inside its sensor cap, its cross sensitivity to alcohol is much smaller than traditional catalytic type sensors. In addition, TGS6810 is more durable against silicone compounds than the traditional catalytic type sensors.
* linear output
* compact size
* small sensitivity to alcohol
* sensitive to both methane and LP gas
* meets RoHS requirements
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Electrochemical Sensors
Design does matter: a bigger sensor means bigger electrodes and more electrolyte, hence
faster response
higher accuracy
more stability
longer life
The smart DraegerSensor with embedded micro-chip and temperature element supports sensor recognition, numerous selftest functions, remote calibration and signal compensation over the entire temperature range of typically -40 to +65 ºC.
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The IGD MKIII flammable gas detector has been in service for many years gaining an enviable reputation for reliability and performance.
Developed originally for the off shore oil and gas industries using IGD's patented pellistor technology the MKIII today finds applications across many industries from drilling platfoms to boiler monitoring and everything in between.
Now ATEX approved the MKIII and available with a range of EEXd controllers, rack cards and 4-20mA output interfaces.
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Electrochemical Sensors
Design does matter: a bigger sensor means bigger electrodes and more electrolyte, hence
faster response
higher accuracy
more stability
longer life
The smart DraegerSensor with embedded micro-chip and temperature element supports sensor recognition, numerous selftest functions, remote calibration and signal compensation over the entire temperature range of typically -40 to +65 ºC.
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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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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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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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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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Gas density controllers
These operate mechanically. The density of the sample gas is compared via a bellows system with the gas density in a reference gas chamber. If the density of the sample gas alters, the bellows system actuates one or more micro switches. Gas density controllers function independent of any power supply.
Trafag gas density controllers are employed internationally in gas-insulated, high-voltage switchgear in power distribution networks. Their performance record is worldwide is unique. Even at climate-related temperature fluctuations of over 135°C, they provide precise measurement results and function reliably and maintenance-free. They are therefore to be found all around the world, in the ice-cold polar regions or under the blazing desert sun.
Gas density sensors
function electronically. The consistent resonant frequency of a quartz oscillator under vacuum is compared with the resonant frequency of an identical quartz situated in the sample gas. The difference in the resonant frequency is proportional to the density of the sample gas. This difference is processed into a digital or analogue output signal.
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Air Flow Sensors Based on the Calorimetric Principle for Air or Gaseous Media. Compact, Precise, Rugged and Reliable
vent-captors are compact, self-contained flow sensors that work according to a calorimetric principle. The principle allows for the creation of compact, reliable flow sensors with a price/ performance ratio not possible with other physical flow-sensing principles.
Especially at a low flow rate, no other sensing principle can achieve the high accuracy of a vent-captor.
First engineered by weber Sensors more than 20 years ago, weber continues to pioneer sensors based on this principle.
vent-captors are available as insertion and in-line types. Both are also available with a binary output as switches and adjustable set-point and with an analog output as meters with an adjustable measuring range.
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MCS SERIES
MCS100 is a ultra-compact, fast response gas mass flow sensor offering a bi-directional flow measurement.
MCS100 is a high accuracy (+/-5% FS) and high repeatability (+/-2%FS) air flow sensor with low power consumption and free mounting position.
MCS100 is ideally suited for physics, medical and semi-conductor applications.
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