 Michell’s Cooled Mirror Dew-
Point Hygrometers are precision instruments for critical measurement and control
applications. The fundamental nature of this method means that Cooled Mirror
instruments can be used as either extremely reliable and stable field
instruments or as laboratory reference standards for the calibration of other
devices. Michell's Cooled Mirror Sensors are fundamental in their method of
operation.
A miniature polished stainless steel mirror is cooled by a
solid plate Peltier thermoelectric heat pump until it reaches the dewpoint of
the gas under test. When this temperature has been reached, condensation will
begin to form on the mirror surface. An electro-optical loop detects that
condensation is forming, by a reduction in the intensity of light reflected
from the mirror surface and through the control electronics of the cooled
mirror instrument. This modulates the cooling power applied to the
Peltier.
The mirror surface is then controlled in an equilibrium state
whereby evaporation and condensation are occurring at the same rate. In this
condition the temperature of the mirror (measured by a platinum resistance
thermometer) is equal to the dew point temperature of the gas. |
 |
S8000 Integrale
The new S8000
Integrale continues Michell’s tradition of excellence in the design of
high... |
 |
S4000 Remote
The S4000 Remote is a
precision laboratory dew-point hygrometer with the ultimate accuracy,... |
 |
S4000 RS and
TRS
The precision S4000 Cooled Mirror Dew-point Hygrometers offer unmatched
accuracy and reliability in dew... |
 |
Optidew
The Optidew high performance
optical dew-point transmitter is based on the proven, fundamental... |
 |
Optidew Vision
The Optidew Vision
precision dew-point meter is based on the proven, fundamental optical dew...
|
|
|
