Mantis 5000 Especificaciones descargar pdf (Pagina 60)

3. Click the Setup button and check the parameters. Normally, the setup parameters for

the application should match those used for the baseline scan. If using a previously

defined baseline correction, retrieve the correct baseline.

4. Click the Start button.

5. If the standard reference option was used for the baseline scan, the reflectance spectra

is generated automatically. If the simple or zero baseline correction was selected,

multiply the sample scan data by the spectral reflectance factors for the calibrated

reflectance standard.

0°/h Transmission Measurements (Comparison Method)

For transmission measurements, make sure that mirror M3 is placed in the transmission

position, marked "T" on the base plate, located farthest from the sphere. If this mirror is

moved or if the cuvette holder is installed over the transmission port, the transfer optics

must be realigned. Repeat the alignment procedure if M3 has been moved. The "T"

position mirror configuration provides a condensed spot size of approximately 5 mm

wide x 9.5 mm high. If a large transmission spot size is desired, such as for the

measurement of fabrics or other homogeneous samples, place mirror M3 in the

reflectance "R" position. This mirror configuration provides a spot size of approximately

11 mm wide x 28 mm high. If an intermediate spot size is required, place the mirror in

the centre-mount "C" position.

1. Collect a Baseline scan

, following the procedures specific to transmission

measurements. If the sample resides on a substrate, load an untreated substrate blank at

the transmission port for the baseline scan recordings. If the transmission sample is

suspended in solution, load a blank cuvette at the transmission port for the baseline.

2. Load the sample at the transmission port. Do not change the configuration of the

integrating sphere in any other way.

3. Click the Setup button and check the parameters. Normally, the setup parameters for

the application should match those used for the baseline scan. If using a previously

defined baseline correction, retrieve the correct baseline.

4. Click the Start button.

5. The value displayed by the instrument is the sample transmission. No data correction

is required.

0°/d Transmission Measurements (Comparison Method)

The approximate diffuse transmission of a given test sample can be measured using the

DRA as follows:

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Mantis 5000 Especificaciones Pagina 60