Orbis AirSTAR, Operation Manual

Page: 47 / 69

42
Tip!
- First bath step is a
warming step? Make sure “Start at” is at least 3
ºC higher than the sample’s ambient temperature.
- With a bath warming step, “Start at” temperature must be entered.
- First bath step is a cooling step? Make sure “Start at” is at least 3 ºC
lower than the sample’s ambient temperature.
- With a bath cooling step, entering “Start at” temperature is not
necessary. “Start at” START is sufficient for a successful test.
Or, in case of CP:
• Start at:
o
“START” > the first measurement will be made at the first whole
degree lower than the room temperature of the sample (example:
sample temperature when starting the test is 21.7 ºC? Then first
aspiration will be done at 20 ºC.)
o
or “ENTER VALUE HERE” > the first measurement will be made at
the sample temperature set here (example: “Start at: 10 ºC” will
command the instrument to cool the sample down to 10 ºC before
the first measurement is made at that temperature).
NOTE: a sample may require pre-heating (for instance because of a
method requirement to heat up the sample to at least 14 ºC above
the expected Cloud point). For such samples, it is recommended to
create a duplicate program with an extra first bath step of 65 ºC.
Do not forget to enter a “Start at” temperature; either make it fixed
in the method or per each test as described in Quick Start 3.3.11.
NOTE: if starting a test with preheating and without “Start at”
temperature, the sample will simply warm up (eventually to 65 ºC)
and, obviously, a test result will never be obtained.
And again, as described before: if the first bath step is a warming
step instead of a cooling step, the steps will be executed according
to the program settings. The only thing “Start at” actually controls
is the sample temperature at which the first measurement will take