Form No.3351-1A-01A
GI-2
UNITS
Electric current
A (ampere)
Electric power
W (watt)
Electric resistance
Ω
(ohm)
Electric voltage
V (volt)
Length
mm (millimeter)
Length
in (inch)
kPa (kilo pascal)
Negative pressure
mmHg (millimeters of mercury)
inHg (inches of mercury)
kPa (kilo pascal)
Positive pressure
kgf/cm
2
(kilogram force per
square centimeter)
psi (pounds per square inch)
Number of
revolutions
rpm (revolutions per minute)
N·m (Newton meter)
kgf·m (kilogram force meter)
Torque
kgf·cm (kilogram force centimeter)
ft·lbf (foot pound force)
in·lbf (inch pound force)
L (liter)
US qt (U.S. quart)
lmp qt (lmperial quart)
Volume
ml (milliliter)
cc (cubic centimeter)
cu in (cubic inch)
fl oz (fluid ounce)
Weight
g (gram)
Weight
oz (ounce)
Conversion to SI Units (Système International
d'Unités)
D
All numerical values in this manual are based on
SI units. Numbers shown in conventional units are
converted from these values.
Rounding off
D
Converted values are rounded off to the same
number of places as the SI unit value. For
example, if the SI unit value is 17.2 and the value
after conversion is 37.84, the converted value will
be rounded off to 37.8.
Upper and lower limits
D
When the data indicates upper and lower limits,
the converted values are rounded down if the SI
unit value is an upper limit and rounded up if the
SI unit value is a lower limit. Therefore, converted
values for the same SI unit value may differ after
conversion. For example, consider 2.7 kgf/cm
2
in
the following specifications:
210Ċ260 kPa {2.1Ċ2.7 kgf/cm
2
, 30Ċ38 psi}
270Ċ310 kPa {2.7Ċ3.2 kgf/cm
2
, 39Ċ45 psi}
D
The actual converted values for 2.7 kgf/cm
2
are
265 kPa and 38.4 psi. In the top specification, 2.7
is used as an upper limit, so its converted values
are rounded down to 260 and 38. In the bottom
specification, 2.7 is used as a lower limit, so its
converted values are rounded up to 270 and 39.
