Conversion Chart - Potterton NXR4 Installation, Operation & Maintenance Manual

HEAT
1 Therm = 100,000 Btu/hr
FUEL CONSUMPTION
1 dm 3 = 1 LITRE
1,000 dm 3 = 1m 3
PRESSURE
1 PSI = 2.307 FT
1 kPa = 1000 Pa
1 bar = 1000 mbar = 100 kPa
LENGTH
1m = 1000mm
VOLUME
AREA
FLOW RATE
1 kg/sec = 1 lit/sec @
0°C reference temperature
TEMPERATURE
TEMPERATURE DIFFERENCE
1°C = 1 o K
WEIGHT

CONVERSION CHART

IMPERIAL TO METRIC
1 Btu/hr = 0.2931 W
1 Btu = 1055 J
1 Btu/hr = 0.252 kcal/hr
1 ft 3 = 28.317 dm 3 (litre)
1 UK Gall = 4.546 litre
1 UK Gall = 1.2 U.S. Gallon
1 lb/in 2
= 6895 Pa
1 lb/in 2
= 68.95 mbar
1 in.w.g. = 249.1 Pa
1 in.w.g. = 2.491 mbar
1 in.w.g = 25.4 mm.w.g.
1 inch = 25.4mm
1 ft = 0.3048 m
1 yard = 0.9144 m
1 mile = 1.609 km
1 ft 3 0.02832 m 3
=
1 ft 3
= 28.32 litre
1 in 2 645.2 mm 2
=
1 in 2 6.452 cm 2
=
1 ft 2 929 cm 2
=
1 ft 2 0.0929 m 2
=
1 gall/min = 0.07577 lit/sec
1 ft 3 /min
= 0.4719 lit/sec
1 ft 3 /min 0.00047 m 3 /sec
=
°F to °C = ("X"°F - 32) x 0.5556 °C to °F = ("X" °C x 1.8) +
"X"°F x 0.5556 = °C
1 lb = 0.4536 kg
1 cwt = 50.8 kg
1 ton = 1016 kg
METRIC TO IMPERIAL
1 kW = 3412 Btu/hr
1 J = 0.0009478 Btu
1 kcal/hr = 3.968 Btu/hr
1 m 3 = 35.3147 ft 3
1 litre = 0.2199 Imp.
Gallon
1 bar = 33.45 ft.w.g.
1 kPa = 0.3345 ft.w.g.
= 14.5 lb/in 2
1 bar
1 Pa = 0.3858 in.w.g.
1 mm.w.g. = 0.0394 in.w.g.
1 mm.w.g. = 9.8 Pa
1 mm = 0.03937 in
1 m = 3.281 ft
1 m = 1.094 yard
1 km = 0.6214 mile
1 m 3 = 35.3147 ft 3
= 0.03531 ft 3
1 litre
1 mm 2 = 0.00155 in 2
1 cm 2 = 0.155 in 2
1 m 2 = 1550 in 2
1 m 2 = 10.76 ft 2
1 lit/sec = 13.2 gall/min
= 2.119 ft 3 /min
1 lit/sec
1 m 3 /sec = 2119 ft 3 /min
32
"X" °C x 1.8 = °F
1 kg = 2.205 lb
1 tonne = 0.9842 ton
1 tonne = 2204.6 lb