Our SHM/SHP Pellistor, or catalytic bead sensor, line is selected by N.E.T. and manufactured, on OEM basis, by the companies leading in the field. The sensor monitors the presence of a combustible gas or vapor in air (or atmospheres containing oxygen) up to the Lower Explosive Limit (LEL).
SHM/SHP Pellistors consist of a matched pair of elements mounted on a single header and protected by a metal mesh filter. Both types have a standard 4-series enclosure (D20.4 mm x H100) to fit a standard gas detector. SHM housing is of stainless steel, while SHP’s is of plastic. The standard dimensions and the electrical output make our Pellistor perfectly compatible with a wide range of commercially available Gas Detection Systems and remote flammable gas detector heads.
SHM/SHP Pellistors exhibits excellent long term zero and sensitivity stability and a high level of resistance to catalytic poisons. The highly automated manufacturing procedure employed results in a repeatable, reliable sensor which, unlike similar devices, requires no trimming resistor to enable the detector to be matched with a compensator.
| Detectable gases – Catalytic Pellistors: | |
|---|---|
| Hydrogen (H2) | Ammonia (NH3) |
| Methane (CH4) | Acetylene (C2H2) |
| List of hydrocarbons and other gases detectable through cross factors: | |
|---|---|
| Acetic acid | Acetone |
| Cyclo-hexane | Cyclo-pentane |
| Ethanol | Ethyl acetate |
| Ethylene | Hydrogen |
| Iso-butane | Iso-octane |
| Iso-propanol | Methanol |
| N-butane | N-heptane |
| N-hexane | N-pentane |
| Styrene | Toluene |
| Ammonia | Propylene |
| Carbon monoxide | Xylene |
| n-octane |
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