Mantis 5000 Especificaciones descargar pdf (Pagina 32)

Zero %R error check - alignment check

1. With the transmission ports uncovered, place the large reference plate over the

reflectance port.

2. From the main ’Scan’ dialog box box, click the Zero button and wait for the

instrument to zero.

3. Remove the reference plate so the beam is going straight through the sphere into the

sample cover. Close the sample compartment, the reading should not be greater than

0.5%R. If it is then check the alignment of the beam through the sphere (adjust M2 as

necessary), check that the lens is clean and free from dust, and ensure that the beam is not

clipping the reflectance port.

Zero %T error check - Electronic calibration check

1. Place the large reference plate over the reflectance port, close the sample

compartment and then zero the instrument

2. Block the beam with a blanking plate (a large solid object) placed in front of the

transmission port of the sphere.

3. The reading should be less than 0.01%R. If it is not, use the Calibration menu item

in the Validate application. Refer to the Calibration

section for further details.

Zero Abs error check - photometric noise check

1. Open the Validate application and select noise test under instrument performance

tests.

2. Enter a tolerance of 0.00012 Abs for UV-Vis and 0.00016 Abs for NIR test.

3. Run the test. If the test fails, use the Calibration menu item in the Validate

application. Refer to the Calibration

section for further details. Also run the noise tests

without the DRA installed. If necessary align the visible lamp in the instrument.

Specular component exclusion check

1. Position the specular light trap over the specular port.

2. Place the large reference plate over the reflectance port.

3. Click the Goto button to open the Goto wavelength dialog box box. Enter ’500’ in the

Wavelength field and click OK. The instrument will then drive to 500 nm. Close the

sample compartment lid.

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Mantis 5000 Especificaciones Pagina 32