shelolab SM10HP-2, Инструкция по установке и эксплуатации

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USER MAINTENANCE (CONTINUED)
C
ALIBRATE THE
T
EMPERATURE DISPLAY
Note: Performing a temperature display calibration requires a temperature reference device.
Please see the Reference Sensor Devices entry on page 11 for device requirements.
Temperature calibrations are performed to match the temperature display to the actual air
temperature inside the oven chamber. The actual air temperature is supplied by a reference sensor
device. Calibrations compensate for drifts in the controller as well as those caused by the natural
material evolution of the sensor probe under temperature in the chamber space. Calibrate as often
as required by your laboratory or production protocol, or regulatory compliance schedule.
Vents
The vent dampeners must be close in order to perform an accurate display
calibration. Chamber temperature uniformity and stability are too disrupted
when operating with the vents open to verify the accuracy of the oven
temperature display.
Probes
A reference device sensing probe may be introduced through the through
the chamber door space. Use heat-resistant, non-marking tape to secure
the wires and probe heads, and seal any gaps. The door must close and
latch fully.
Secure the wiring and cover any gaps in the door space using heat-
resistant, non-stick tape.
Place the sensor probe of the temperature reference device as close as
possible to the geometric center of the oven chamber. A thermocouple
sensor probe sleeve may be taped to the shelving, as long as the exposed
copper end is 2 inches (5cm) away from the shelf (see Figure 13). An
exposed sensor probe in direct contact with the shelving may experience
heat sinking, which can result in an inaccurate temperature reading.
Pre-Heating
For best accuracy, set the oven temperature set point to that of your application. If you will be
running a multi-set point heating profile, set the oven to run at the average temperature of your
profile. Let the oven heat to the constant temperature set point and run for at least 1 hour
undisturbed in order to stabilize.
Temperature Stability
The oven chamber is thermally stabilized when no fluctuations of ±0.2

C or greater have been
detected with the verification reference device for a minimum of 30 minutes . Failure to wait for
stabilization will result in an inaccurate calibration and oven temperature display reading.
Figure 12: Vent Damper
in Closed Position
Figure 13: Probe End
2 inches (5cm) From
Shelf Surface