Delta DO 9704 manual Conversion Factors and Tables

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CONVERSION FACTORS AND TABLES

Temperature: °C =	°F-32		; °F = (1.8 x °C) + 32
	1.8
Pressure measurement:		mm = 0.03937 in		in = 25.4 mm
		cm = 0.3937 in		in = 2.54 cm
		m = 39.37 in		in = 2.54 x 10–2m

p =	f	= pressure =	force
	m2		surface

According to the international system, pressure measurement is expressed in Pascal 1 Pa = 1 N/m2= 1 Newton/square metre.

The principal engineering units for measuring pressure are:

Pascal = Pa (N/m2), kPa = 103 Pa, Mpa = 106 Pa

Bar = bar, mbar = bar x 10–3

Metres of column of water 4°C = mH2O, mmH2O = mH2O x 10–3

Millimetres of column of mercury 0°C		= mmHg, Torr
Theoretic atmosphere		= at (kp/cm2)
Physical atmosphere		= atm
Inches of column of water at 4°C		= in H2O
Inches of column of mercury at 0°C		= in Hg
Micro of column of mercury at 0°C		= µm Hg
Pounds per square inch		= psi
1 bar = 100,000 Pa	Pa	= 10–5x bar
1 bar = 14.5038307 psi	psi	= 0.0689473023 x bar
1 bar = 0.986923 atm	atm	= 1.01325 x bar
1 bar = 755.7299444 mmHg	mmHg	= 0.001323224 x bar
1 bar = 10.19716213 mH2O	mH2O	= 0.0980665 x bar

psi = in of H2O	x (3.6127 x 10–2)	in of H2O
psi = mm of H2O	x (1.4223 x 10–3)	mm of H2O
psi = cm of H2O	x (1.4223 x 10–3)	cm of H2O
psi = in of Hg	x 0.49118	in of Hg
psi = mm of Hg	x (1.9339 x 10–2)	mm of Hg
psi = Kg/cm2	x 14.223	Kg/cm2
psi = bar	x 14.503	bar
psi = mbar	x (1.4503 x 10–2)	mbar

=psi x 27.68

=psi x 703.1

=psi x 70.3

=psi x 2.036

=psi x 51.71

=psi x 0.0703

=psi x 0.0689

=psi x 68.95

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