Ametek Thermox WDG-V UOP, Руководство пользователя

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1-10 | Thermox WDG-V UOP IECEx/ATEX
Temperature Zones and Heaters
The temperature zones in the analyzer are tightly controlled by the
oxygen cell temperature heater. The cell heater is a 300W coil heater sur-
rounding the cell housing and providing precision heat to the oxygen cell.
The box temperature is controlled with an RTD mounted on the aspirator
block. The box heater consists of two (2) 150W cartridge heaters located
in the aluminum heater block at the bottom of the aspirator. This heater
provides the heat for the enclosure to maintain all plumbing components
above 225°C.
Cell Temperature
The oxygen cell is controlled to 680 °C. The cell temperature is measured
by dual, Type K thermocouples. Dual thermocouples are used for self-
check of the cell temperature. The thermocouples are side-by-side in a
single assembly. There is no distinction between the two thermocouples.
Flame Arrestors
The WDG-V UOP analyzer contains two flame arrestors to prevent the
analyzer from becoming an ignition source for the process when there are
short periods of high combustible levels (25% of LEL - Lower Explosive
Limit) in the process. The flame arrestors are not, however, intended to
protect the process when the combustibles’ levels are constantly high.
Two additional flame arrestors are provided with the unit for
the cal gas inlet and the vent.