Pellistor Gas Sensors (Micropel, Miniature Citipel, Citipel)
Pellistors employ catalytic combustion to measure combustible gases or vapors in air up to the Lower Explosive Limit of the gas. The standard sensor consists of a matched pair of elements, typically referred to as a detector and compensator (reference element). The detector comprises a platinum wire coil embedded within a bead of catalytic material. The compensator is similar except that the bead does not contain catalytic material and as a consequence is inert.
Availability: Commercially Available
+49 (0) 228 52 66 40
Justus-von-Liebig-Str. 22,
53121 Bonn, Germany
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www.citytech.com
| Manufacturer |
| Honeywell Analytics |
| Product Name |
| Pellistor Gas Sensors (Micropel, Miniature Citipel, Citipel) |
| Detection Category |
| Chemical; |
| Detection Principle |
| Sensors; |
| Detection Method |
| Catalytic Bead Sensor ; |
| Application |
| Gas Analysis; |
| Equipment Type |
| Sensor |
| Product Synopsis |
| Pellistors employ catalytic combustion to measure combustible gases or vapors in air up to the Lower Explosive Limit of the gas. The standard sensor consists of a matched pair of elements, typically referred to as a detector and compensator (reference element). The detector comprises a platinum wire coil embedded within a bead of catalytic material. The compensator is similar except that the bead does not contain catalytic material and as a consequence is inert. |
| Availability |
| Commercially Available |
| Technology Readiness Level (TRL) |
| 9 |
| User Feedback Sources |
| Indifferent/No user feedback |
| Dimensions |
| Micropel: .67 x .67 x .16 in (16.9 x 17 x 4 mm) Miniature Citipel: .8 x .8 x .82 in (20.4 x 20.4 x 20.9 mm) Citipel: .44 x .44 x .45 in (11.05 x 11.05 x 11.55 mm) |
| Weight |
| <1 lb.; Dependent on sensor, most 24g |
| Power Requirements |
| AC/DC Line Power; Dependent on sensor, 3.3-4.25 VDC |
| Transportability |
| Pocket Size |
| Ruggedness |
| Extreme Temperatures/Humidity |
| Operating Conditions |
| -20 to 55°C, 0-90% RH |
| Consumables |
| <$1,000/year; Calibration gases |
| Calibration Schedule |
| Yes |
| Shelf Life |
| <6 months; Dependent on sensor, most 3-6 months in sealed container |
| Maintenance Cost |
| Calibration supplies |
| Other Chemical Targets |
| Combustible gases, Methane |
| Sample Introduction |
| Vapor/Gas |
| Sensitivity/Detection Limits |
| %LEL |
| Known Interferents/Inhibitors |
| Some compounds will decompose on the catalyst and form a solid barrier over the catalyst surface. This action is cumulative and prolonged exposure will result in an irreversible decrease in sensitivity. The most common of these substances are: lead or sulfur containing compounds; silicones; phosphates. Certain other compounds, especially hydrogen sulfide and halogenated hydrocarbons, are absorbed or form compounds that are absorbed by the catalyst. The resultant loss of sensitivity is temporary and in most cases a sensor will recover after a period of operation in clean air. |
| Response Time (Sample Application To Output) |
| Continuous (<30 seconds); <20 seconds |
| Alarm Capability |
| Signal output |
| Training Required |
| <1 week training |
| Manuals Available |
| Specification sheets |
| Warranties |
| Dependent on sensor, most 12 months |
| IATA Shipping Restrictions |
| Yes; calibration gases |
