Potter Fire Alarm Systems - Manual (Page 11)

9
Fire Alarm Training • 8700055 • Rev F • 4/10
Symbols for Signal Initiating Devices and Switches
Symbol Description Comments
Smoke detector Symbol orientation not to be changed
Smoke detector-photoelectric products of combustion detector
Smoke detector-ionization products of combustion detector
Smoke detector-beam transmitter
Smoke detector-beam receiver
Smoke detector-air sampling
Smoke detector for duct
Gas detector
Flame detector
Indicate ultraviolet (UV), infrared
(IR), ultraviolet/infrared (UV/IR), or
visible radiation-type detectors; symbol
orientation not to be changed
Flame
Ultraviolet
Infrared
Combination ultraviolet/infrared
Visible radiation
Flow detector/switch
Pressure detector/switch
Specify type-water, low air, high air, and
so forth; symbol orientation not to be
changed
Lever detector/switch Symbol orientation not to be changed
Tamper detector Alternate term-tamper switch
Valve with tamper detector/switch
Output relay
Temperature switch-high temperature
Temperature switch-low temperature
P
I
BT
BR
ASD
F
UV
IR
UV/IR
VR
VR
HT
LT
* Symbols are copied from the National Fire Protection Association Standard 170, Standard for Fire Safety and Emergency Symbols