Thermo Scientific PRO902C, Instruction Manual

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PRO902C MANUAL
T FS
Rev 6.0 August 16, 2007 3-8
5. Please refer to Table 3.4-2, below, for parameter set points for each controller. Enter the
operation menu by pressing the

(Advance) key. The controller is in the operation menu
when “Pb1” is displayed on the lower window. To proceed to the next parameter, press the

(Advance) key. These parameters will be automatically entered after the Auto-tune is
complete.
Parameter Function Heated Filter
Settings
Heat Exchanger
Settings
Pb1 Power band #1 6 15
rE1/dE1 Reset #1 .17 0.15
Ra1/dE1 Rate #1 .29 0.1
Ct1 Cycle Time #1 1.0 1.0
ALO Low alarm set point -10.0 -5.0
AHI High alarm set point +10.0 +5.0
CAL Calibration offset 0.0 0.0
Aut Autotune function* Do Not Autotune Do Not Autotune
Table 3.4-2 Operation Setup Menu
*
Autotune will be engaged when a value other than 0 is entered into the Aut Parameter. When
the Autotune is complete, the value will automatically revert back to 0.
C) Go to the dilution probe assembly and verify that the dilution air regulator has been
turned off. This will keep moisture from contaminating the system until temperature
set points are reached.
D) Apply power to the dilution probe assembly by turning on the rotary power switch.
Using a digital thermometer, check the temperature of the heated filter assembly and
the heat exchanger assembly, via the thermocouple port drilled into each assembly.
Make sure that both temperatures are approaching their set points. When both
temperatures have stabilized, return to the probe controller assembly for the next step.
E) At the controller, check that both temperature controllers show a temperature within
10°F of the set point. On the heated filter temperature controller, push the

(Advance) key until “Aut” is on the display and use the “up” key to enter a “2.” The
controller will begin an autotune and the Heated Filter temperature will cycle up and
down until the controller has set autotune parameters.
Do not perform the autotune
on the heat exchanger temperature controller.
F) Using a digital thermometer, verify the heat exchanger temperature is 45° ± 5° F.
G) Using a digital thermometer, verify the heated filter temperature is 285° ± 10° F.
H) Verify that the probe enclosure temperature is 100°F.