Tyco Fire Protection Products ANSUL PS-1000, Operation And Maintenance Manual

Page: 37 / 80

TEMPERATURE CORRECTION CHARTS (Continued)
300/400 ft
3
(8.49/11.32 m
3
) Cylinders
(Except for Cylinders on the AQUASONIC System)
Examples:
1. The nitrogen cylinder on an ANSUL fire suppression system
indicates a pressure of 1800 psi (124.1 bar) on the pressure
gauge. The temperature of the cylinder is 80 °F (27 °C).
Reference to the chart shows that this is above the ‘‘tempera-
ture correction line’’ and the cylinder does not need to be
replaced.
2. One of the nitrogen cylinders of an ANSUL fire suppression
system indicates a pressure of 1600 psi (110.3 bar) on the
pressure gauge. The temperature of the cylinder is 80 °F
(27 °C). Reference to the chart shows that this is below the
minimum recommended pressure for this temperature.
The cylinder should be replaced by a fully charged nitrogen
cylinder.
TEMPERATURE CORRECTION CHARTS
8-1-11 Page 7
REV. 2
CYLINDER
PRESSURE
(bar) psi
(144.8) 2100
(137.9) 2000
(131.0) 1900
(124.1) 1800
(117.2) 1700
(110.3) 1600
(103.4) 1500
(96.5) 1400
(89.6) 1300
–65 –40 –20 0 20 40 60 80 100 120 150 °F
(–54) (–40) (–29) (–18) (7) (4) (16) (27) (38) (49) (66) (°C)
NITROGEN CYLINDER TEMPERATURE
RECOMMENDED
OPERA
TING
PRESSURE
TEMPERA
TURE CORRECTION LINE