Mantis 5000 Especificaciones descargar pdf (Pagina 74)

Instrument *

2. External

DRA

3. Tubing 4. Flow meters

5. Shut-off

valves

6. Manifold

7. Pressure

regulator

8. Nitrogen

control valve

*Refers to the purge inlet labelled "Instrument".

The DRA accessories each have an inert gas purge capability for reducing water vapour

absorption inside the integrating sphere. The gas nozzle is located underneath on the left-

hand side of the overhanging accessory. A nitrogen purge can be applied as follows:

1. Install the accessory into the instrument sample compartment.

2. Attach a suitable gas regulator to the gas outlet of a nitrogen dewar or N2 cylinder.

3. Connect a suitable hose between the regulator outlet and the nitrogen connector on the

accessory.

Figure 54. Attach the connector on the hose

to the connector on the under side of the

integrating sphere.

Figure 55. The connectors snap together.

4. Crack open the shut off valve until the flow meter indicates the flow of nitrogen. Wait

approximately five minutes before proceeding with reflectance or transmission

measurements.

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Mantis 5000 Especificaciones Pagina 74