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5. Temperature Control
This chapter describes how the temperature control works on the LabTouch.
5.1 Basics
Most of the samples are signifi cantly infl uenced by temperature. For this reason,
the instrument is equipped with a simple temperature-controlled measurement
chamber. As opposed to the LabMaster-aw, the LabTouch-aw does not offer
a cooling function which just allows measurement temperatures at least +2°C
but max. +10°C above environmental (lab) temperature
Furthermore, the instrument does not have an thoroughly isolated measurement
chamber. Thus the accuracy can get worse if the temperature inside the chamber
is signifi cantly higher than the environmental one, especially if the infrared
sensor is covered by an installed sensor protection fi lter.
5.2
Setting the Measurement Temperature
• Press "Chamber settings" on the main menu screen and select "Temperature
control afterwards, then enter the requested measurement temperature
there. If no value is entered, the temperature control is switched-off.
• A warning notice is displayed if the programmed temperature is less than
the required 2°C above the environmental one. In addition, the displayed
temperature in the measurement screen turns red in this case and the user
will be noticed in the status bar by a respective hint.
• If the environmental temperature is changing during an on-going measurement
in a way that the programmed temperature can not be reached, the displayed
temperature turns red as well and the instrument will not reach stability,
means the measurement can not be fi nished.
The notice "retarded (temp)" appears below the stable indicator.
• Stability is foreclosed if nominal temperature cannot be reached plus if
"Stability check temperature" is activated . Retarded (temp) is displayed
in this case as well.
Note:
The programmed temperature must be between 15°C and 30°C!
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