Mantis 5000 Especificaciones descargar pdf (Pagina 32)

14. Adjust the height adjustment screw on the side of the polarizer mount until the

transmission reading is half (+/- 1%) of the reading noted in step 12.

15. Open the sample compartment lid and rotate the aperture mask so that only the

upper aperture is open. Repeat the measurement until the reading for the upper

aperture is half (+/- 1%) of the reading when both apertures are open.

16. Use the Validate application to check the photometric accuracy of the DRA

with the double aperture attachment. Refer to the Validate

section of the help.

Operation

Samples can be mounted at the transmission or reflectance ports. At the reference

port, attenuators may be mounted. Paddles, clamps and a sample ledge are provided

you to assist with mounting your samples.

Figure 31. Front, the Paddle; rear, the

Clamp

Figure 32. The Ledge

The Varian internal DRA provides different mounting options:

• standard sample holder kit;

•

liquid sample holder;

•

small sample holder;

•

powder cell;

• small sample mount;

• polarizer;

• double aperture attachment

The following table illustrates which type of readings can be taken with which

attachments.

Attachment %T %R

Standard

Liquid sample holder

Small sample mount

Powder cell

Caution

When performing measurements and calibrations with the DRA some steps require

1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 48 49

Sin comentarios

Mantis 5000 Especificaciones Pagina 32