30 . High-Performance Lambda Spectrometers Hardware Guide
Figure 9 Optical system in the Lambda 1050 spectrometer lamp compartment
Second, the automatic internal sample beam and reference beam attenuators have the
following possible values: 0%, 0.1%, 1% and 100%.
Third, the detector compartment has the Three Detector Module fitted as standard. A
photomultiplier tube (PMT) detector is used in the UV/Vis range (175–860 nm). In the NIR
range you will have either a narrowband or a wideband InGaAs detector (860–1800 nm or
860–2500 nm, respectively) and a lead sulfide (PbS) detector (860–3300 nm).
NOTE: The Three Detector Module is installed as standard in the Lambda 1050, but can also
be purchased as an accessory for the Lambda 950. For more details see the
Three
Detector Module User’s Guide
(L6050010) on the
High-Performance Lambda
Spectrometers User Manuals
CD
(L6050009).
Figure 10 Optical system in the Lambda 1050 spectrometer detector compartment
The radiation passing alternately through the sample and reference beams is reflected by
mirrors M11, M12, M13, and M11′, M12′, M13′, respectively of the optics in the detector
assembly onto the appropriate detector.
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