1
iS50 ATR Module
4
iS50 ATR Module User Guide
Thermo Scientific
Table 1.
iS50 ATR status indicator states
The ATR module spectral range options are the same as for the spectrometer and are
dependent upon the spectrometer configuration. Refer to the spectrometer help topics or user
guide for more information.
Specifications
Table 2.
iS50 ATR module specifications
LED status
Meaning
On
Ready for use
Off
System is not configured for ATR sampling
Blinking
Optics are reconfiguring
Feature
Specification
Crystal material
Diamond, Type IIa
Crystal shape, size
Round, 2.8 mm (0.11 in) diameter
Sampling zone
2 mm (0.08 in)
Refractive index
2.4 @ 1000 cm
-1
Angle of incidence
45 degrees (single bounce)
Depth of penetration
2.0 micrometers at 1000 cm
-1
for a sample material that
has refractive index of 1.5
Maximum sample thickness
12.7 mm (0.5 in)
Useful pH range
1 to 14
Pressure arm maximum force
267 Newtons (60 lbs)
Detector
Dedicated broad-band DTGS (deuterated triglycine
sulfate)
