CEMP-E
TI 810-11
30 November 1998
Surge Protection:
Methods of protecting signal wiring and
power wiring circuits from damage by
electrical voltage and current overrange due
to such factors as lightning strikes.
System Feedback:
System's response to the controller's action
in changing the value of a controlled variable,
as transmitted back to the controller.
SZ:
Single Zone
T:
Modulating Thermostat, Tuesday
TC:
Temperature Controller
TDR:
Time Delay Relay
TE:
Temperature-Sensing Element
TEMP:
Temperature
Terminal Unit:
A unit through which heating or cooling is
distributed to the conditioned space.
Terminal units include radiators, unit heaters,
gas-fired infrared heaters,
variable-air-volume boxes, duct heating coils,
and fan-coil units.
TH:
Thursday
Thermostat:
A device that senses temperature and
changes its output as a result of temperature
changes.
Throttling Range:
The portion of the instrument range of a
controlled variable required to move the
controlled device from one extreme to the
other.
TI:
Thermometer
Time Clock:
A device that changes the positions of its
output contacts according to a timing
schedule.
A transducer that senses the value of a
variable and converts this value into a
standardized transmission signal.
TS:
Non-Modulating Space Thermostat or
Aquastat
TSL:
Low-Temperature-Protection Thermostat or
Nightstat, Non-modulating
Glossary-13
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