30 November 1998
High-Temperature Hot Water
Heating, Ventilating, and Air Conditioning
Hot Water Supply
Heat Exchanger (Converter)
A term used to describe HVAC systems
using liquid heating and cooling media.
Cycles Per Second (Hertz)
Integral Control Mode
The variable signal, received by an
instrument, which provides that instrument
with a means of changing its output signal.
The acronym for a current to pneumatic
signal transducer. (I for current and P for
Integral (I) Mode:
Control mode in which the output is
proportional to the time integral of the input;
i.e., the rate of change of output is
proportional to the input.