CIRAS-3 Operation Manual V. 1.09 170 support@ppsystems.com
I am unable to achieve my Tcuv set point
• You are working outside the temperature control limits of 0-45
o
C.
• The set point is not achievable because it is outside the temperature control range of ~10
o
C
below ambient to +15
o
C above ambient.
• More than likely you are unable to cool the chamber to your set point as a result of high incident
light or your batteries are getting low.
I am unable to achieve my Tleaf set point
• You are working outside the temperature control limits of 0-45
o
C.
• The set point is not achievable because it is outside the temperature control range of ~10
o
C
below ambient to +15
o
C above ambient.
• More than likely you are unable to cool the chamber to your set point as a result of high incident
light or your batteries are getting low.
PAR Measurement and Control
Why does my PARi reads lower than PARe
• This is normal. The PARi sensor is located inside the cuvette head and below the window and
should therefore read approximately 10% lower than PARe.
• Make sure that nothing is obstructing the PARi sensors.
I am using the light unit but I am unable to control light intensity
• Check to make sure that the electrical connection is in place.
• Go to Settings and make sure that you have the proper light source selected
My PARe readings do not seem accurate
• The sensor likely requires recalibration. Check the calibration against another PAR sensor that
you trust and believe to be calibrated. Recalibrate if necessary. See PAR Calibrate on page 106
.
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