Campbell IRGASON Manual descargar pdf (Pagina 35)

IRGASON Integrated CO

O Open-Path Gas Analyzer and 3D Sonic Anemometer

Wicks are available as listed in Table 9-1.

TABLE 9-1. Rain Wick Replacement Parts

Wick

Campbell Scientific, Inc

Part Number

Campbell Scientific Description

Bottom

Wick

28652 FAB EC150/IRGASON RAIN

WICK BOTTOM

Top Wick 28653 FAB EC150/IRGASON RAIN

WICK TOP

The top wick has a short seam which has to be aligned with the short side of

the top snout. The angled edge of the wick must closely follow the edge of the

window without encroaching on the optical path (see Figure 9-2, Proper

location of the sonic top wick and bottom wick). The bottom wick is installed

in a similar manner, except the long seam should be aligned with the long side

of the bottom snout. Once in place, the wicks should fit snuggly over the

cylindrical part of the snout without any creases or wrinkles.

The wicks are constructed with a UV-resistant fabric and should function over

long time periods. Nevertheless, they should be inspected periodically. Check

for contamination from dust, pollen, pitch or other debris. If needed, wash

them in warm water with mild detergent or replace them. When performing

the zero-and-span procedure, the wicks should be removed before installing the

zero-and-span shroud.

Remove the wicks during the winter. The wicks will accumulate snow or

freezing rain, resulting in blockage of the optical path. Besides the wicks,

controlling the heaters in the snouts is another method the user may consider in

preventing data loss during precipitation and condensation events. The heaters

can be controlled statically using the Setup window in ECMon or dynamically

using a datalogger (see Section 10.2, EC100Configure() Instruction for more

details).

FIGURE 9-2. Proper location of the gas analyzer top wick (left) and

bottom wick (right)

1 2 ... 30 31 32 33 34 35 36 37 38 39 40 ... 58 59

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Campbell IRGASON Manual Pagina 35