6109A/7109A
Operators Manual
26
Basic Operations
Common operations are explained in the subsequent sections.
Immerse Temperature Probes
For best results:
•
Check that the bath fluid level is between the MIN and MAX marks on the stir
guard.
•
See that the bath fluid stirs well when you enable temperature control.
•
Keep the bath fluid covered as much as possible to ensure good temperature
stability and uniformity and to reduce fumes. Use the provided probe access
cover or a custom cover.
•
Immerse sensors in the bath fluid so that the tips of the probes are at least
15 mm above the bottom of the tank and 65 mm below the surface of the
fluid. When you test the tri-clamp temperature sensors, immerse their flanges
just below the surface of the bath fluid to ensure good thermal equilibration of
the temperature sensor with the bath fluid.
•
If you use a reference probe, place it in the center of the working area.
•
Use the optional probe clamps to hold sensors vertical at the proper height.
Set the Setpoint
1. Push
. The setpoint field changes to edit mode.
2. Enter the setpoint temperature with the number keys.
3. Push
to save the setpoint.
4. Push
(
Ramp
) to specify a temperature ramp rate.
5. Push
to edit the Ramp Rate.
6. Use the number keys to type a rate (in
°
C or
°
F per minute).
7. Push
to save the new value.
8. Push
to move the focus to Ramp Enable.
9. Push
to enable the ramp rate.
10. Push
(
Done
).
11. Push
or the Enable softkey to heat or cool the bath fluid to the setpoint.
If ramp rate is enabled, the rate of change is controlled until the temperature
reaches the setpoint. The Product may reduce heating power as it approaches
the setpoint to minimize overshoot.
When the temperature reaches the setpoint, the control indicator changes to
Stable and the ready indicator turns green. The temperatures of the sensors can
then be measured and compared.
www.
.com
1.800.561.8187