Fluke DATAPAQ Tracker XL2 User Manual page 29

Thermal Protection –
Barriers and Heatsinks
A Datapaq thermal barrier provides the thermal and mechanical protection
necessary for the data logger to survive in the hostile environment of an
industrial oven.
Ceramic insulation covered by a ceramic fiber cloth provides the primary
thermal protection, and a heatsink filled with a non-toxic, non-flammable phase-
changing material provides additional, secondary protection allowing the system
to operate at high temperatures for extended periods. The phase-changing
material absorbs the heat and maintains a temperature of 58°C/136.4°F until all
the material has changed from solid to liquid state.
The ceramic insulation material will absorb moisture if stored in a damp
environment – and this may also happen during the thermal barrier's manufacture.
Although this will not damage the barrier, its performance will be degraded until
the moisture is removed. Thus, if you suspect this has happened, or if using a new
barrier, run it (sealed and containing heatsinks if supplied, but excluding the data
logger) once through your process to remove the moisture.
To eliminate risk of contamination, it is strongly recommended that barriers
are examined after each use (see p. 56): check the seals and integrity of the
insulation carefully. If damaged excessively, it is possible that insulation material
may escape and cause particulate contamination within the oven. If in any doubt
about the safety of the equipment, or contamination, contact Datapaq.
Aluminum Thermal Barriers
These barriers' key features are:
• Casing made from deep-drawn aluminum for lightness.
• Steel probe-plate on lid for convenient attachment of magnetic probes.
• Handles at side and top for convenience of carrying and for hanging in
the oven. Handles can be locked into position for extra ease and safety
when recovering from hot oven.
• Indented lid allows easy grasp of handle with gloved hand.
• Strong catches with locking pins to maintain secure lid even if dropped.
• Patented use of specialized silicone-free materials for insulation and
sealing in the barrier avoids contamination issues. All materials used in the
OVEN TRACKER XL2
Thermal Barriers and Heatsinks
29