Annex I Units of Measure: Code elements listed by quantities - UNECE
Annex I Units of Measure: Code elements listed by quantities - UNECE
Annex I Units of Measure: Code elements listed by quantities - UNECE
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
<strong>Code</strong>s for <strong>Units</strong> <strong>of</strong> <strong>Measure</strong> used in International Trade<br />
<strong>Units</strong> <strong>of</strong> <strong>Measure</strong>: <strong>Code</strong> <strong>elements</strong> <strong>listed</strong> <strong>by</strong> <strong>quantities</strong><br />
Quantity<br />
Level<br />
Cat.<br />
Use<br />
Id.<br />
Name<br />
Conversion factors to SI<br />
units<br />
(1 unit equals)<br />
Represen.<br />
Symbol<br />
Cross<br />
ref.<br />
molar absorption<br />
coefficient<br />
object distance<br />
1 square metre per mole m ² /mol 562<br />
image distance 1 metre m 564<br />
focal distance<br />
vergence, lens power 1 reciprocal metre m -¹ 566<br />
Acoustics<br />
period, 1 second s 567<br />
periodic time<br />
frequency 1 hertz Hz 569<br />
frequency interval 1 octave 570<br />
angular frequency,<br />
pulsatance<br />
1 reciprocal second s -¹ 571<br />
1 radian per second rad/s 572<br />
wavelength 1 metre m 573<br />
repetency, wavenumber 1 reciprocal metre m -¹ 574<br />
angular repetency,<br />
angular wavenumber<br />
volumic mass, density,<br />
mass density<br />
1 radian per metre rad/m 575<br />
1 kilogram per cubic metre kg/m ³ 576<br />
static pressure, 1 pascal Pa 577<br />
(instantaneous) sound<br />
pressure<br />
(instantaneous) sound<br />
particle displacement<br />
(instantaneous) sound<br />
particle velocity<br />
(instantaneous) sound<br />
particle acceleration<br />
(instantaneous) volume<br />
flow rate,<br />
velocity <strong>of</strong> sound (phase<br />
velocity)<br />
group velocity<br />
sound energy density,<br />
volumic sound energy<br />
1 bar 10 5 Pa (exactly) bar 578<br />
2 X dyne per square centimetre 10 - ¹ Pa (exactly) dyn/cm ² 579<br />
1 metre m 580<br />
1 metre per second m/s 581<br />
1 metre per second squared m/s ² 582<br />
1 cubic metre per second m ³ /s 583<br />
1 metre per second m/s 584<br />
1 joule per cubic metre J/m ³ 586<br />
2 X erg per cubic centimetre 10 -1 J/m³ (exactly) erg/cm³ 587<br />
sound power 1 watt W 588<br />
2 X erg per second 10 -7 W (exactly) erg/s 589<br />
sound intensity 1 watt per square metre W/m ² 590<br />
1S milliwatt per square metre mW/m ² 591<br />
1S microwatt per square metre µW/m ² 592<br />
164 Recommendation 20
Change language