Tyco Fire Protection Products ANSUL PS-1000, Operation And Maintenance Manual, Page: 36 / 80

TEMPERATURE CORRECTION CHARTS
100/220 ft
3
(3.11/6.23 m
3
) Cylinders
Examples:
1. The nitrogen cylinder on an ANSUL fire suppression system
indicates a pressure of 1450 psi (100 bar) on the pressure
gauge. The temperature of the cylinder is 40 °F (4 °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 1350 psi (93 bar) on the pres-
sure 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
Page 6
8-1-11
REV. 2
CYLINDER
PRESSURE
(bar) psi
(124.1) 1800
(117.2) 1700
(110.3) 1600
(103.4) 1500
(96.5) 1400
(89.6) 1300
(82.7) 1200
(75.8) 1100
–65 –40 –20 0 20 40 60 80 100 120 °F
(–54) (–40) (–29) (–18) (–7) (4) (16) (27) (38) (49) (°C)
NITROGEN CYLINDER TEMPERATURE
TEMPERA
TURE CORRECTION LINE
RECOMMENDED
OPERA
TING
PRESSURE