CEMP-E
TI 810-11
30 November 1998
Heat:
Heating
HFER:
Humidifier
HL:
High Limit
HOA:
Hand-Off-Automatic
HP:
HPS:
High-Pressure Steam
HR:
Heat Recovery
HRC:
Heat-Recovery Coil
HRS:
Hours
HS:
Manual Switch
HTHW:
High-Temperature Hot Water
HVAC:
Heating, Ventilating, and Air Conditioning
HWS:
Hot Water Supply
HX:
Heat Exchanger (Converter)
Hydronic:
A term used to describe HVAC systems
using liquid heating and cooling media.
HZ:
Cycles Per Second (Hertz)
I:
Integral Control Mode
IH:
Infrared Heater
Input Signal:
The variable signal, received by an
instrument, which provides that instrument
with a means of changing its output signal.
INV:
Signal-Invertor Module
IO:
Input/Output
IP:
The acronym for a current to pneumatic
signal transducer. (I for current and P for
pneumatic.)
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.
Glossary-6
Previous Page
