4 Description of function
25
NIRFlex N-500
Operation Manual, Version G
4 .3 .2
Laser unit
The laser unit comprises:
• Laser tube
• High voltage power supply
The intensity of the laser light is continuously checked. When it falls below a certain threshold, the
operator has to change the laser, see section 7.5. The hours of operation are logged.
The typical lifetime of a laser is about 20000 h.
4 .3 .3
Standard wheel
Standard wheel
Every NIRFlex N-500 is equipped with a standard wheel with standards that are used for the System
Suitability Test (SST).
The standards within the wheel have the following functions:
• Wavelength standard (PMMA) to check the wavelength accuracy.
• Open beam for normal measurements.
• Five different grey standards to check the linearity.
The software is designed for the automatic use of the standard wheel, i.e. the operator does not have
to start one of the above mentioned tests manually, to ensure proper measurement of the SST and
NADIA.
4 .4
NIRWare software suite
NIRWare is the interface program suite between the instrument and the operator. All program parts are
hosted on an external PC. The PC communicates with the spectrometer via internal network adapter.
NOTE
• A second network interface at the PC is recommended to connect the NIRFlex N-500 to a local
PC network, e.g. for data backup or to communicate with enterprise resource planning etc.
• It is recommended to turn off all power saving options. For Windows XP: In the Control Panel
of the operating system open the dialog Power Options Properties and select Power schemes
Always On.