30 November 1998
Methods of protecting signal wiring and
power wiring circuits from damage by
electrical voltage and current overrange due
System's response to the controller's action
in changing the value of a controlled variable,
as transmitted back to the controller.
Modulating Thermostat, Tuesday
A unit through which heating or cooling is
distributed to the conditioned space.
Terminal units include radiators, unit heaters,
variable-air-volume boxes, duct heating coils,
and fan-coil units.
A device that senses temperature and
changes its output as a result of temperature
The portion of the instrument range of a
controlled variable required to move the
controlled device from one extreme to the
A device that changes the positions of its
output contacts according to a timing
A transducer that senses the value of a
variable and converts this value into a
standardized transmission signal.
Non-Modulating Space Thermostat or
Low-Temperature-Protection Thermostat or