Process Control and Instrumentation
Vapour actuated pressure spring thermometer does not require ambient temperature compensation. Ambient temperature compensation is provided in gas or liquid expansion pressure spring thermometer by

Reducing the volume of the capillary to a minimum
All of these
Reducing the volume of the receiving element to a minimum
Making the volume of thermometer bulb as large as conveniently possible

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Process Control and Instrumentation
The Laplace transform of exp(at), where a > 0, is defined only for the Laplace parameter, s > a since

The Laplace transform integral of exp(at) has initial values only for s > a
The function exp(at) is piece-wise continuous only for s > a
The function is exponential
The Laplace transform of integral of exp(at) has finite values only for s > a

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