Operation (continued) – Shellab SRI20PF User Manual
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OPERATION (CONTINUED)
Part 2: Calibrate the Night Time Temperature
Note: The SRI6PF and SRI20PF must be calibrated to separate Day Time temperature and Night
Time temperature set points. In the Day Time heating and lighting mode, the LED interior
lights give off heat. As a result Day and Night calibration offsets will differ.
1. Change the unit to its Night Time mode by pressing and holding the Mode button for five
seconds. The Day Time Temp indicator LED should extinguish, and the Night Time Temp
indicator should turn on.
2. Allow the temperature to stabilize at the Night Time set point for at least one (1) hour with
no changes in the reference device’s reading. Do not disturb the incubator or open the door
during this time.
3.
If the reference device’s and the incubator’s temperature readings are the same, or the
offset between the two falls within the acceptable range of your laboratory protocol after
one (1) hour of stability, the incubator is calibrated.
4. If there is a difference between the two (2) readings, and that offset falls outside your
laboratory protocol
’s acceptable range, adjust the incubator’s temperature display to match
the
reference device’s reading. See the next step. If the door was briefly opened to take a
reading, wait fifteen minutes for the temperature to stabilize before correcting for the offset.
5. Press and hold both the UP and DOWN arrows simultaneously. The Temperature Display
will begin flashing and display the current temperature value. Adjust the current value
until it matches the reference device’s temperature reading. This will enter the offset into
the unit’s temperature controller board.
6.
After matching the unit’s current value to that of the reference device, wait five seconds.
The incubator’s Temperature Display will cease flashing, and the incubator will now begin
heating or cooling to compensate for the entered temperature offset.
7. Allow the incubator one (1) hour to stabilize after reaching the new temperature.
8. C
ompare the reference device’s reading with the incubator’s. If the reference device’s and
the incubator’s temperature readings are the same or fall within the range of your
laboratory protocol, the incubator is now calibrated.
9. If the two readings are not the same or fall outside your laboratory protocol, repeat steps 5
– 8.
10. If the temperature offset between the readings of the incubator and the reference device
still falls outside your laboratory protocol after three calibration attempts,