Fluorolog-3 v. 2.2 (10 Sep 2002)
Components & Accessories
6-12
Model 1914F Thermoelectrically Cooled
Signal Detector
As a rule, cooling a detector improves the
S
/
N
ratio by reducing the inherent dark count
or noise. For the standard signal detector, Model 1911F (described above), cooling re-
duces the dark count from 1000 cps to 20 cps; the useful wavelength band (190–860
nm) remains the same.
The Thermoelectrically Cooled Signal Detector consists of the housing, power supply,
Model 1630 Field Lens Adapter, a black flange, and a silver adapter plate. To cool, a
water line and drain are attached to the tubing extending from the housing, and room-
temperature water is circulated through the housing.
Model 1914F Thermoelectrically Cooled Signal Detector R928P.
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