Mantis 5000 Especificações descarregar pdf (Página 20)

Correction

one

Autostore tab

File Storage: Storage OFF

4. Click the 'Goto' button to open the 'Goto wavelength' dialog box. Enter '500' in

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

Zero %R error check

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

reflectance port.

2. From the main 'Scan' dialog 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 Extended Sample Compartment. 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.

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 0.5%R. If it is not, use the Calibration menu

item in the Validate application. Refer to the Calibration

section for further

details.

Specular component exclusion check

1. Position the sphere cap so the 'D' is facing up.

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

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

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

Close the sample compartment lid.

4. Click the Zero button and wait for the instrument to zero.

5. Place the supplied mirror over the reflectance port, and close the sample

compartment. Note the reading. If the reading is greater than 1.5%R, then

either the specularly reflected beam is not exiting the sphere at the

transmission port, dirt on the lens is scattering the beam and creating a 'halo'

effect on the reflectance port, or the sample mirror does not have a good

specular surface. If the reading is greater than 1.5%R, you should repeat the

check for the specular component as detailed in the Checking for the specular

component section.

6. Rotate the sphere cap 180° so that the 'S' mark is facing up. When the sample

compartment is closed, the reading should be approximately 90%.

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Mantis 5000 Especificações Página 20