Thermo Scientific 7450, Operating And Maintenance Manual

Page: 88 / 120

7007452 CryoMed Freezer 10-5 Thermo Scientific
Section 10
PC Interface Software
Step Name with Menu Format Step Parameters with Definitions
Ramp - RAMP X.X°C/MIN UNTIL CHAMBER=Y.Y°C or
RAMP X.X°C/MIN UNTIL SAMPLE=Y.Y°C
where X.X is the ramp rate and Y.Y
is the chamber (or sample) endpoint
temperature.
Changes Chamber temp from its
current value to specified temp
(Chamber sensor trip point) at the
selected rate (°C/minute). The rate
can be set over a range of 0.1°C/
minute to 99.9°C/minute. The
temp can be set over a range of
-180°C to +50ºC(±0.1ºC). When
the Chamber reaches specified
temp, the control moves to the next
step in the profile. If Sample sensor
is selected, Chamber temp changes
at a specified rate until Sample temp
reaches specified temperature.
Note The slope of the temperature ramp is determined automatically,
based on the temperature entered and the chamber temperature at the
beginning of the step. Entry of a sign for the rate term is not
required/allowed.
▲
Edit Screen
(continued)
Figure 10-4. Ramp Rate