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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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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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The FCM6812 combustible gas sensor module is a new
unit which utilizes TGS6812, Figaro's catalytic pellistor
type gas sensor which features durability, stability, and
quick gas response. Calibrated under strictly controlled
environmental conditions at Figaro's factory, this module
provides analog output voltage proportional to hydrogen
gas concentration. FCM6812 is resin coated for
waterproofing and electrical insulation purposes, and also
is also capable of detecting sensor wire breakage. The
unit has a wide range of operating temperature from -10°
to +60°C.
Because the TGS6812 sensor can detect methane and
LP gas as well as hydrogen, this module is suitable for
gas leak detection in stationary fuel cells which use
hydrogen generated from combustible gases.
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The Model S4000CH Intelligent Sensor is a microprocessor- based transmitter designed for use with General Monitors' catalytic bead sensors. The unit features one person calibration and can virtually self-calibrate by simply activating a magnetic switch and applying gas. It is designed to monitor combustible gases and vapors within the lower explosive limit (LEL) and provide status indication and alarm outputs. Complies with ANSI/ISA 12.13.01-2000 performance requirements for combustible gas detectors.
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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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