Temperature control
230
Goldeye G/CL Technical Manual V4.2.0
In addition to temperature stabilization, Goldeye Cool cameras are equipped with
a fan to actively dissipate the heat that builds up internally. Note that the housing
size design is independent from the implemented thermo-electric cooling. A Cool
model does not necessarily have a two-stage TEC.
See
Neutralization of the temperature influence on page 232
for a detailed
explanation.
Passive camera cooling
Goldeye TECless models provide no active temperature stabilization for the sensor.
These models are especially suitable for environments with a low and stable
ambient temperature, or in application scenarios where the influence of
temperature on image quality is limited, for example at low exposure times of less
than 10 milliseconds.
Recommended environment for Goldeye TECless
Goldeye TECless models are not equipped with a TEC element, hence the camera
does not possess temperature setpoints and cannot stabilize the sensor
temperature. Therefore, TECless models are recommended to be run in an
environment with stable temperature and humidity.
Their non-uniformity correction sets are calibrated for a sensor temperature of
+45 degrees Celsius, because this is the sensor temperature that most likely is to
be expected when the camera is operated at an ambient temperature of
23 degrees Celsius and a relative humidity of 40 percent.
Additional heating of the G/CL-008 models
The TEC1 element of a camera usually has only the ability to cool the sensor. In
addition to that, the heating functionality of the Goldeye G-008 and CL-008
models also enables the TEC1 element to heat the sensor. This ability has the
following advantages:
•
The camera can operate at a sensor temperature that is higher than the
ambient or case temperature.
•
When used for low-temperature applications, if the ambient temperature is far
below +20 degrees Celsius, or if the default temperature setpoint has been set
high above the ambient temperature, the warm-up period is considerably
shortened. Even in ambient temperatures below 0 degrees Celsius, the camera
reaches a stable temperature within one minute.
•
The heating capability prevents any variation of the sensitivity curve caused by
fluctuation of temperature.
