User Manual

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SmartHeat SLT Heaters
Technical specifications
Specifications
Environment temperature range: -45°C (-49°F) to 100°C (212°F)
Operational set point range: 10°C (50°F) to 70°C (158°F)
Leadwires:
24 AWG
Lot/Batch Variation: +/- 5decC typical
Heater Size Constraint: 7 in x 22 in Maximum (standard
construction)
22 in x 42 in Maximum (stitched construction)
Heater thickness: 0.018 in
Features & Benefits
• No risk of overheating due to delamination or
environmental changes
• Automated, elevated temperature management and control
with consistent thermal outcomes
• Patented materials ensure peak performance in a thin
implicit control simplifies device design and reduces
product launch cycle
Stability
• From a cold start, SmartHeat initially provides maximum
power to quickly reach its designated operating
temperature. As it approaches the operating temperature it
will sharply reduce power output and slow heating.
• When the operating temperature is reached, SmartHeat
provides only the power required to maintain thermal
equilibrium, eliminating any temperature overshoot. Once
thermal equilibrium is achieved, SmartHeat responds to
any changes in the environment to maintain the operating
temperature across the entire device surface. The heater will
adjust power output as necessary at each point across its
surface to maintain uniform temperature.
• A traditional heater, where power output is typically
controlled by a single sensor feedback loop, is unable to
compensate for localized transient variations and can lead
to non-uniform temperatures.
Safety
SmartHeat is self-limiting, meaning it can never exceed the
designed safety temperature. This is particularly important in
applications in which overheating can damage equipment or
impair the operation of the system.
It prevents damage due to heater delamination or drastic
changes in environmental heat loads. If a heater becomes
delaminated, a traditional heater would over-temp and either
create a hot spot or drive to failure. The SmartHeat material
on the other hand will simply lower the power output to the
delaminated area and maintain its set-point.
This is also true for drastic changes in environmental conditions,
such as a sudden loss of liquid in a heated container. If a
traditional heater encountered an empty or partially empty
container or vessel the reduced heat loss from the heated
surface may not be adequate, causing the traditional heater to
overheat. This will not happen with the SmartHeat material. It
will lower its power output and maintain its design set point.
Loss of heating function can also be risky. Unlike a traditional
heater, a damaged SmartHeat heater is unlikely to be
completely shut down by physical damage. In most cases
physical damage will only shut down the damaged area of the
heater, allowing it to continue functioning at a reduced level.
In some cases, the functioning area will draw increased power
to compensate for the damaged area, which does not heat.
Overall, SmartHeat is the better choice for applications in which
both heater failure and overheating must be avoided.