NAP-50A Catalytic (Pellistor) Flammable Gas Sensor

General Description:

The Nemoto NAP-50A is a catalytic (pellistor) type flammable gas sensor supplied as a matched pair of catalytic elements mounted on a single header enclosed in a plastic housing and protected by a metal mesh. Designed as a gas sensor for general use in a wide range of flammable / explosive gas detectors, the sensor detects and measures the presence of flammable gases and vapours in air, in the range 0-50% of the Lower Explosive Limit (LEL) of the gas or vapour being measured.

The highly advanced and efficient production techniques developed by Nemoto means that the cost of technically superior pellistor technology, usually reserved for Industrial Applications, is now appropriately low enough for them to be used for domestic gas detectors, which have hitherto tended to use less expensive, but less stable and less selective semiconductor type gas sensors.

The NAP-50A, is identical in performance to the NAP-55A, but is slightly modified to reduce the effect of potential cross sensitive gases likely to be encountered in domestic premises, particularly Ethanol, in compliance with the European standard for domestic methane / natural gas detectors, EN 50194.

The NAP-50A should therefore only be selected only if sensitivity to natural gas or methane only is required in an instrument conforming with EN50194. The NAP-50 will not respond correctly to other flammable gases.

If the instrument is required to respond to all flammbale gases in a general purpose Flammable gas monitor, The NAP-55A  should be used.