Shel lab SVAC9-2, Installation And Operation Manual, Page: 39 / 46

39 | P a g e
USER MAINTENANCE
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 7 for device requirements.
Temperature calibrations match the temperature display to the
actual shelving temperature inside the oven chamber. The actual
shelving temperature is supplied by a reference sensor device.
Calibrations compensate for software drifts in the controller as well
as deviations caused by the natural material evolution of the sensor
probe in the heated chamber space. Calibrate as often as required
by your laboratory or production protocol, or regulatory compliance
schedule. Always calibrate to the industry or regulatory standards
required for your application.
Suggested Temperature Calibration Set Up
Continued on next page
1
Introduce a thermocouple probe from a
reference device into the oven chamber using a
feedthrough secured to the KF-25 port on the
back of the oven.
2
Use the KF-25 clamp included with the oven to
secure the potted probes and seal the flange
3
The thermocouple probe ends must be in direct
contact with the shelving The probes may be
taped to the shelves using heat-resistant non-stick
tape. Use the tape to secure any loose wiring.
If using only a single thermocouple, place the
probe on the shelving as close as possible to the
geometric center of the chamber.
4
SET VACUUM
Evacuate the chamber to the vacuum level of
your application or baking process.
The chamber must be under vacuum in order to
perform an accurate temperature calibration.